DOCSLIB.ORG

Znii and Cuii-Based Coordination Polymers and Metal Organic Frameworks by the of Use of 2-Pyridyl Oximes and 1,3,5-Benzenetricarboxylic Acid

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Znii and Cuii-Based Coordination Polymers and Metal Organic Frameworks by the of Use of 2-Pyridyl Oximes and 1,3,5-Benzenetricarboxylic Acid molecules Article ZnII and CuII-Based Coordination Polymers and Metal Organic Frameworks by the of Use of 2-Pyridyl Oximes and 1,3,5-Benzenetricarboxylic Acid Ioannis Mylonas-Margaritis 1 , Julia Mayans 2 , Patrick McArdle 1 and Constantina Papatriantafyllopoulou 1,* 1 School of Chemistry, College of Science and Engineering, National University of Ireland Galway, University Road, H91 TK33 Galway, Ireland; [email protected] (I.M.-M.); [email protected] (P.M.) 2 Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltran 2, 46980 Paterna Valencia, Spain; [email protected] * Correspondence: [email protected]; Tel.: +353-91-493-462 Abstract: The simultaneous use of 2-pyridyl oximes (pyridine-2 amidoxime, H2pyaox; 2-methyl pyridyl ketoxime, Hmpko) and 1,3,5-benzenetricarboxylic acid (H3btc) provided access to five new compounds, namely [Zn(H2btc)2(H2pyaox)2]•2H2O(1•2H2O), [Zn(Hbtc)(H2pyaox)2]n (2), [Cu(Hbtc)(H2pyaox)]n (3), [Cu(Hbtc)(HmpKo)]n (4) and [Cu2(Hbtc)2(Hmpko)2(H2O)2]•4H2O(5•4H2O). Among them, 3 is the first example of a metal-organic framework (MOF) containing H2pyaox. Its framework can be described as a 3-c uninodal net of hcb topology with the layers being parallel to the (1,0,1) plane. Furthermore, 3 is the third reported MOF based on a 2-pyridyl oxime in general. 2 and 4 are new members of a small family of coordination polymers containing an oximic ligand. 1–5 form 3D networks through strong intermolecular interactions. Dc magnetic susceptibility studies were carried out in a crystalline sample of 3 and revealed the presence of weak exchange interactions between the metal centres; the Citation: Mylonas-Margaritis, I.; − −1 Mayans, J.; McArdle, P.; experimental data were fitted to a theoretical model with the fitting parameters being J = 0.16(1) cm Papatriantafyllopoulou, C. ZnII and and g = 2.085(1). The isotropic g value was also confirmed by electronic paramagnetic resonance (EPR) CuII-Based Coordination Polymers spectroscopy. Reactivity studies were performed for 3 in the presence of metal ions; the reaction progress and Metal Organic Frameworks by was studied and discussed for Fe(NO3)3 by the use of several characterization techniques, including the of Use of 2-Pyridyl Oximes and single crystal X-ray crystallography and IR spectroscopy. 1,3,5-Benzenetricarboxylic Acid. Molecules 2021, 26, 491. https:// Keywords: coordination polymers; metal-organic frameworks (MOFs); carboxylates; pyridyl oximes; doi.org/10.3390/molecules26020491 zinc; copper Academic Editor: Vito Lippolis Received: 22 December 2020 Accepted: 12 January 2021 1. Introduction Published: 18 January 2021 The synthesis and characterization of metal coordination polymers and metal-organic Publisher’s Note: MDPI stays neutral frameworks (MOFs) have attracted a considerable research interest worldwide over the last with regard to jurisdictional claims in decades, which stems from their technological, environmental and biomedical applications published maps and institutional affil- in sensing, catalysis, imaging, drug delivery, etc. [1–10]. Such species consist of mononu- iations. clear or low nuclearity inorganic units, which are linked through organic linkers with the nature of the metal ions and the organic linkers affecting their structure, having also the po- tential to introduce additional functionalities and physical properties in to the framework, e.g., photoluminescence, magnetism. For example, some 1D coordination polymers exhibit single chain magnetism (SCM) behaviour, and are promising candidates for applications in Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. quantum computing, high-density information storage, etc. [11–24]. As the dimensionality This article is an open access article of the framework increases, the induced porosity is combined in a synergistic way with distributed under the terms and its other physical properties, leading to the formation of hybrid multifunctional materials, conditions of the Creative Commons with enhanced performance in a variety of applications (spintronics, photonics, catalysis Attribution (CC BY) license (https:// and others). creativecommons.org/licenses/by/ Restricting further discussion to MOFs [8–10], they display a wide range of desirable 4.0/). structural features, such as large surface area, high porosity, flexible structure, stability Molecules 2021, 26, 491. https://doi.org/10.3390/molecules26020491 https://www.mdpi.com/journal/molecules Molecules 2021, 26, 491 2 of 16 gistic way with its other physical properties, leading to the formation of hybrid multifunc- tional materials, with enhanced performance in a variety of applications (spintronics, pho- tonics, catalysis and others). Molecules 2021, 26, 491 Restricting further discussion to MOFs [8–10], they display a wide range of desirable2 of 16 structural features, such as large surface area, high porosity, flexible structure, stability and the possibility of controlled and targeted introduction of functional groups into the framework. Furthermore, some MOFs possess phenomena that affect their porosity and and the possibility of controlled and targeted introduction of functional groups into the stability, namely the interpenetration and the breathing effect [25–29]. The former refers framework. Furthermore, some MOFs possess phenomena that affect their porosity and to the cases where more than one networks are catenated with each other [25–27], which stability, namely the interpenetration and the breathing effect [25–29]. The former refers potentially results in the increase of the surface area and stability of the MOF, and in the to the cases where more than one networks are catenated with each other [25–27], which decrease of its pore diameter. The breathing effect is related to the change of the MOF pore potentially results in the increase of the surface area and stability of the MOF, and in the dimensions upon encapsulation of a guest molecule as a result of the change of the inter- decrease of its pore diameter. The breathing effect is related to the change of the MOF molecular interactions [28,29]. The unique properties of MOFs and their structural tuna- pore dimensions upon encapsulation of a guest molecule as a result of the change of the bility make these materials especially suitable for encapsulating a plethora of different intermolecular interactions [28,29]. The unique properties of MOFs and their structural guesttunability molecules. make these materials especially suitable for encapsulating a plethora of different guestThe molecules. wide range of applications of MOFs and coordination polymers constitute an increasingThe wide need range for the of development applications ofof MOFsefficient and synthetic coordination approaches polymers towards constitute new spe- an ciesincreasing with enhanced need for porosity the development and stability. of efficient The vast synthetic majority approaches of MOFs has towards been newsynthesized species withusing enhanced solvothermal porosity techniques, and stability. while Theother vast approaches majority have of MOFs been has developed been synthesized in recent years,using solvothermalbased on post techniques,-synthetic, isoreticular, while other microwave approaches-assisted, have been mechanochemical developed in recent and years,sonochemical based on synthesis post-synthetic, [30–38]. Each isoreticular, of thesemicrowave-assisted, synthetic approaches mechanochemical often leads to different and species,sonochemical whose synthesis properties [30 are–38 me].rely Each dictated of these by synthetic the organic approaches ligands that often link leads the neigh- to dif- bouringferent species, SBUs, whoseand by propertiesthe nuclearity are and merely type dictated of the metal by the ion organic that is ligandspresent thatin the link struc- the ture.neighbouring The organic SBUs, linkers and possess by thenuclearity suitable coordination and type of sites the metalfor the ion formation that is present of the frame- in the work,structure. providing The organic the desirable linkers possessflexibility suitable and stability. coordination The hydrogen sites for thebonding, formation π–π ofstack- the ing,framework, and other providing intermolecular the desirable interactions flexibility also affect and stability. the architecture The hydrogen of the overall bonding, frame-π–π workstacking, and and the otherMOF intermolecularselectivity towards interactions specific alsoguest affect molecules. the architecture A large number of the overall of or- ganicframework linkers and has the now MOF been selectivity employed towards in MOFs specific synthesis guest including molecules. imidazolates, A large number pyri- dine,of organic carboxylates linkers, hasetc., nowwith beenthe latter employed being one in MOFs of the synthesismost commonly including used, imidazolates, resulting in pyridine,MOFs with carboxylates, a wide range etc., of with pores the sizes latter and being shapes one of[39 the–49 most]. The commonly combination used, ofresulting two dif- ferentin MOFs linkers with has a wide been rangealso employed of pores sizesfor the and synthesis shapes [of39 new–49]. MOFs; The combination in this case, ofone two of thedifferent ligands linkers often has plays been the also role employed of the pillar for the that synthesis link parallel of new layers MOFs; leading in this case, to the one for- of mationthe ligands of oftenpillar plays-layered the roleMOFs of thewith pillar
Load more

Recommended publications
  • Synthesis, X-Ray Structure and Properties of a Calcium(II) Coordination Polymer Showing Μ2-Η :Η and Μ3-Η :Η Coordination M
    Ms. Ref. No.: POLY-D-08-00248 (REVISED PAPER) Published in Polyhedron: 27(15); 2008; 3299-3305 Synthesis, X-ray structure and properties of a 1 1 calcium(II) coordination polymer showing µ2-η :η 2 1 and µ3-η :η coordination modes of 4-nitrobenzoate ∗ BIKSHANDARKOIL R SRINIVASAN , SANTOSH Y SHETGAONKAR, JYOTI V SAWANT, PALLEPOGU RAGHAVAIAH a Department of Chemistry, Goa University, Goa 403206 India email: [email protected] aPresent address: School of Chemistry, University of Hyderabad, Hyderabad, India 500 046 Abstract 1 2 The reaction of the monomeric compound [Ca(H 2O) 4(η -4-nba)( η -4-nba)] 1 (4-nba = 4-nitrobenzoate) with N-methylimidazole (N-MeIm) or imidazole (Im) at 100 oC results in the formation of the anhydrous mixed ligand complexes of composition [Ca(L)(4- nba) 2] (L=N-MeIm 2; L=Im 3). The compounds were characterized by elemental analysis, IR, UV-Vis and 1H NMR spectra, TG-DSC thermograms, weight loss studies and the structure of 2 was determined by single crystal X-ray crystallography. Compounds 2 and 3 can be transformed into 1 by heating with water. At elevated temperatures all compounds ( 1-3) are thermally decomposed to CaO. Compound 2 crystallizes in the centrosymmetric triclinic space group P ī with all atoms located in general positions. The structure reveals that 2 is a polymer and can be formulated as 1 1 2 1 catena -poly[[(N-methylimidazole)calcium(II)]( µ2-η :η -4-nitrobenzoato)( µ2-η :η -4- 1 1 2 1 nitrobenzoato)] . The structure of [[Ca(N-MeIm)]( µ2-η :η -4-nba)( µ3-η :η -4-nba)] n 2 2 consists of a central Ca(II) ion, a terminal N-MeIm ligand and two crystallographically independent 4-nba ligands.
    [Show full text]
  • Sonochemical Synthesis of Cadmium(II) Coordination Polymer Nanospheres As Precursor for Cadmium Oxide Nanoparticles
    crystals Article Sonochemical Synthesis of Cadmium(II) Coordination Polymer Nanospheres as Precursor for Cadmium Oxide Nanoparticles Farhad Akbari Afkhami 1 , Ali Akbar Khandar 1, Ghodrat Mahmoudi 2,* , Reza Abdollahi 3, Atash V. Gurbanov 4,5 and Alexander M. Kirillov 5,6,* 1 Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; [email protected] (F.A.A.); [email protected] (A.A.K.) 2 Department of Chemistry, Faculty of Science, University of Maragheh, 55181-83111 Maragheh, Iran 3 Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; [email protected] 4 Department of Organic Chemistry, Baku State University, Z. Khalilov str. 23, AZ 1148 Baku, Azerbaijan; [email protected] 5 Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal 6 Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow 117198, Russia * Correspondence: [email protected] (G.M.); [email protected] (A.M.K.) Received: 15 March 2019; Accepted: 2 April 2019; Published: 9 April 2019 Abstract: Nanospheres of a new coordination polymer {[Cd2(µ-HL)(µ-L)(NO3)3(H2O)]·H2O}n (1) were easily prepared by a sonochemical method from cadmium(II) nitrate and HL (HL, pyridine-2-carboxaldehyde isonicotinoyl hydrazone) in ethanol. Single crystals of 1 were also obtained using a branched tube method. The crystal structure of 1 indicates that the µ-HL/µ-L− blocks act as linkers between the Cd(II) centers, assembling them into 1D tooth-shaped interdigitated chains, which are further interlinked into a complex 3D H-bonded network with a rare hms (3,5-conn) topology.
    [Show full text]
  • Porous Coordination Polymers with Ubiquitous and Biocompatible Metals and a Neutral Bridging Ligand
    ARTICLE Received 30 Apr 2014 | Accepted 14 Nov 2014 | Published 16 Jan 2015 DOI: 10.1038/ncomms6851 OPEN Porous coordination polymers with ubiquitous and biocompatible metals and a neutral bridging ligand Shin-ichiro Noro1,2,3,4, Junya Mizutani2, Yuh Hijikata5, Ryotaro Matsuda3,6, Hiroshi Sato6, Susumu Kitagawa6, Kunihisa Sugimoto7, Yasutaka Inubushi8,w, Kazuya Kubo1,2 & Takayoshi Nakamura1,2 The design of inexpensive and less toxic porous coordination polymers (PCPs) that show selective adsorption or high adsorption capacity is a critical issue in research on applicable porous materials. Although use of Group II magnesium(II) and calcium(II) ions as building blocks could provide cheaper materials and lead to enhanced biocompatibility, examples of magnesium(II) and calcium(II) PCPs are extremely limited compared with commonly used transition metal ones, because neutral bridging ligands have not been available for magnesium(II) and calcium(II) ions. Here we report a rationally designed neutral and charge-polarized bridging ligand as a new partner for magnesium(II) and calcium(II) ions. The three-dimensional magnesium(II) and calcium(II) PCPs synthesized using such a neutral ligand are stable and show selective adsorption and separation of carbon dioxide over methane at ambient temperature. This synthetic approach allows the structural diversification of Group II magnesium(II) and calcium(II) PCPs. 1 Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0020, Japan. 2 Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan. 3 PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi 332-0012, Japan. 4 Creative Research Institute (CRIS), Hokkaido University, Sapporo 001-0021, Japan.
    [Show full text]
  • A Cd(II) Coordination Polymer Based on Mixed Ligands: Synthesis, Crystal Structure, and Properties
    crystals Article A Cd(II) Coordination Polymer Based on Mixed Ligands: Synthesis, Crystal Structure, and Properties Shuai-Shuai Han, Zi-Wei He, Lei Li and Shui-Sheng Chen * College of Chemistry and Chemical Engineering, Fuyang Normal University, Fuyang 236041, China; [email protected] (S.-S.H.); [email protected] (Z.-W.H.); [email protected] (L.L.) * Correspondence: [email protected] Received: 11 November 2019; Accepted: 25 November 2019; Published: 27 November 2019 Abstract: A new coordination polymer, namely, [Cd(L)(frda)(H O)] 0.5L H O(1) was synthesized 2 · · 2 by hydrothermal reaction based on mixed multi-N donor 1-(4-(1H-imidazol-5-yl) phenyl)-1H- 1,2,4-triazole (L) and O-donor 2,5-furandicarboxylic acid ligands (H frda) with CdCl 2.5H O. 2 2· 2 Compound 1 was characterized by single-crystal x-ray diffraction, elemental analysis, and IR 2 spectroscopy. In 1, both the multi-N donor and O-donor frda − ligands act as linear two-connectors to bridge Cd(II) atoms, forming a two-dimensional (2D) layer. Interestingly, the parallel 2D layers stack in an AAA mode, and the infinite one-dimensional (1D) channels formed along the a-axis ··· direction, where the uncoordinated L molecules were embedded in the void. Furthermore, the weak interactions including the rich hydrogen bonding and π π stacking interactions progress the 2D − structure into a three-dimensional (3D) supramolecular polymer. Diffuse reflectance spectra and the luminescent property were also investigated. Keywords: coordination polymer; characterization; optical property 1. Introduction Coordination polymers (CPs) consisting of organic ligands and metal ions have attracted an upsurge in research during the past decades, due to their charming structures and their possibly applied domain of luminescence [1–4], gas adsorption/separation [5,6], proton conductivity [7], chemical separations [8], catalysis [9], and so on.
    [Show full text]
  • Crown Ethers and Their Alkali Metal Ion Complexes As Assembler Groups in Uranyl–Organic Coordination Polymers With
    Crown Ethers and Their Alkali Metal Ion Complexes as Assembler Groups in Uranyl–Organic Coordination Polymers with cis -1,3-, cis -1,2-, and trans -1,2-Cyclohexanedicarboxylates Pierre Thuéry, Youssef Atoini, Jack Harrowfield To cite this version: Pierre Thuéry, Youssef Atoini, Jack Harrowfield. Crown Ethers and Their Alkali Metal Ion Complexes as Assembler Groups in Uranyl–Organic Coordination Polymers with cis -1,3-, cis -1,2-, and trans - 1,2-Cyclohexanedicarboxylates. Crystal Growth & Design, American Chemical Society, In press, 18 (5), pp.3167-3177. 10.1021/acs.cgd.8b00266. cea-01759418 HAL Id: cea-01759418 https://hal-cea.archives-ouvertes.fr/cea-01759418 Submitted on 6 Apr 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Crown Ethers and their Alkali Metal Ion Complexes as Assembler Groups in Uranyl–Organic Coordination Polymers with cis -1,3-, cis -1,2- and trans -1,2-Cyclohexanedicarboxylates Pierre Thuéry* ,† Youssef Atoini ‡ and Jack Harrowfield*,‡ †NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France ‡ISIS, Université de Strasbourg, 8 allée Gaspard Monge, 67083 Strasbourg, France ABSTRACT: Alkali metal cations (Na +, K +) and crown ether molecules (12C4, 15C5, 18C6) were used as additional reactants during the hydrothermal synthesis of uranyl ion complexes with cis /trans -1,3-, cis -1,2- and trans -1,2- cyclohexanedicarboxylic acids ( c/t-1,3-chdcH2, c-1,2-chdcH2 and t-1,2-chdcH2, respectively, the latter as racemic or pure (1 R,2 R) enantiomer).
    [Show full text]
  • Coordination Polymers, Metal-Organic Frameworks and the Need for Terminology Guidelines
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE Accepted manuscript: CrystEngComm, 2012,14, 3001-3004 provided by Chalmers Publication Library DOI: 10.1039/C2CE06488J, http://pubs.rsc.org/en/content/articlelanding/2012/ce/c2ce06488j Coordination Polymers, Metal-Organic Frameworks and the Need for Terminology Guidelines Stuart R. Battena, Neil R. Champnessb, Xiao-Ming Chenc, Javier Garcia-Martinezd, Susumu Kitagawae, Lars Öhrströmf*, Michael O’Keeffeg, Myunghyun Paik Suhh and Jan Reedijki,j Coordination Polymers (CP) and Metal-Organic Frameworks (MOF) are among the most prolific research areas of inorganic chemistry and crystal engineering in the last 15 years, and yet it still 5 seems that consensus is lacking about what they really are, or are not. Background Nomenclature and terminology should always create added value. They are tools to incorporate new results into the greater weave of science and enable us to go from the specific to the general. New terminology should also help us to constructively discuss new compounds, 10 materials and phenomena without having to proceed through endless preambles of definitions. When two or more sub-disciplines of science find themselves preparing and analysing similar kinds of new materials, an ad hoc terminology often develops from different viewpoints and may not naturally converge into a self-consistent and logical result. This dual situation occurs for Coordination Polymers (CP)1 and Metal-Organic Frameworks 2 15 (MOF) , compounds generated in interdisciplinary research fields with their origins in solid state, inorganic and coordination chemistry that have expanded rapidly during the last 15 years. The diversity in both focus and scientific basis of the researchers involved has lead to numerous terminology suggestions and practices for this class of compounds and of several subgroups within them;3 additionally, a disquieting number of acronyms are also in use for these materials.
    [Show full text]
  • One Dimensional Coordination Polymers Based on Bridging N,N Donor Ligands
    One Dimensional Coordination Polymers Based on Bridging N,N Donor Ligands Der Naturwissenschaftlichen Fakultät der Friedrich-Alexander-Universität Erlangen-Nürnberg zur Erlangung des Doktorgrades Dr. rer. nat. vorgelegt von Nico Fritsch aus Forchheim Als Dissertation genehmigt von der Naturwissen- schaftlichen Fakultät der Friedrich-Alexander-Universität Erlangen-Nürnberg Tag der mündlichen Prüfung: 13. Juni 2014 Vorsitzender des Promotionsorgans: Prof. Dr. Johannes Barth Gutachter: Prof. Dr. Nicolai Burzlaff Prof. Dr. Julien Bachmann Die vorliegende Arbeit entstand in der Zeit von Juni 2011 bis März 2014 im Department für Chemie und Pharmazie (Lehrstuhl für Anorganische und Metallorganische Chemie) der Friedrich-Alexander-Universität Erlangen-Nürnberg unter der Anleitung von Prof. Dr. Nicolai Burzlaff. Teile dieser Dissertation wurden bereits veröffentlicht: “trans-1,2-Bis(N-methylimidazol-2-yl)ethylene: Towards Building Blocks of 2D Fabrics and MML-Type 2D Molecular Strands”, N.V. Fischer, M. S. Alam, I. Jum´h, M. Stocker, N. Fritsch, V. Dremov, F.W. Heinemann, N. Burzlaff, P. Müller, Chem. – Eur. J., 2011, 17, 9293-9297. “Battlement-shaped 1D coordination polymer based on bis(N-methylimidazole-2yl)butadiyne ligand”, T. Waidmann, N. Fritsch, J. Tucher, M. Rudolf, F. Glaser, D.M. Guldi, N. Burzlaff, CrystEngComm, 2013, 10157-10160. – Reproduced by permission of The Royal Society of Chemistry. You can´t always get what you want. But if you try sometimes you might find, You get what you need. (Sir Mick Jagger) Table of contents 1! GENERAL INTRODUCTION ............................................................................................ 1! 1.1! From metal organic frameworks to 1D coordination polymers ........................................... 2! 1.2! Different concepts of molecular wires .................................................................................... 5! 1.2.1! Organic based molecular wires ..........................................................................................
    [Show full text]
  • A Supramolecular Coordination Polymer Derived Electrocatalyst for Oxygen Evolution Reaction
    A Supramolecular Coordination Polymer Derived Electrocatalyst for Oxygen Evolution Reaction Chi Zhang,a Chen Zhang,b Yunchao Xie,a Xiaoqing He,c Tommi White,c d Derek Demaree,e Mark H. Griep,e Jerry L Atwood*b and Jian Lin*a a. Department of Mechanical & Aerospace Engineering, University of Missouri, Columbia, Missouri 65211, United States. E- mail: [email protected] b. Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States. E-mail: [email protected] c. Electron Microscopy Core Facility, University of Missouri, Columbia, MO 65211, United States d. Department of Biochemistry, University of Missouri, Columbia, MO 65211, United States e. U.S. Army Research Laboratory, 4600 Deer Creek Loop, Aberdeen Proving Groun, Maryland 21005, United States An iron oxide decorated nickel iron alloy nanoparticle/porous graphene hybrid exhibits high electrocatalytic activity and excellent durability toward oxygen evolution reaction (OER). It displays a LOW overpotential of 274 mV at 10 mA/cm2, and low Tafel slope of 37 mV/dec, showing a superior performance to the state-of-the-art RuO2 OER electrcatalyts. Scanning electron microscopy (SEM) was performed to characterize the morphology and structure. Fig. 1b shows that the nanoparticles are well dispersed on the surface of the LIG sheets. The corresponding elemental mapping confirms the existence of the C, O, Fe, and Ni elements and their uniform dispersion. High-resolution TEM (HRTEM) was further performed to investigate the nanostructures in more details. The HRTEM image (Fig. 1d) reveals well-resolved lattice fringes with interplanar distances of 0.205 nm, 0.290 nm and 0.364 nm, of Fe3O4 and (002) plane of graphene, respectively.
    [Show full text]
  • Synthesis and Crystal Structure of a New Calcium-Containing Trimesate Coordination Polymer: [Ca3(Btc)2(H2O)12]∞
    Synthesis and crystal structure of a new calcium-containing trimesate coordination polymer: [Ca3(btc)2(H2O)12]1. Magatte Camara, Carole Daiguebonne, Olivier Guillou, Albert Manga Badiane, Insa Badiane, Saïbatou Yague, Florence Le Dret To cite this version: Magatte Camara, Carole Daiguebonne, Olivier Guillou, Albert Manga Badiane, Insa Badiane, et al.. Synthesis and crystal structure of a new calcium-containing trimesate coordination polymer: [Ca3(btc)2(H2O)12]1.. Journal de la Société Ouest-Africaine de Chimie, Société Ouest-Africaine de Chimie, 2013, 035, pp.57-63. hal-01074624 HAL Id: hal-01074624 https://hal.archives-ouvertes.fr/hal-01074624 Submitted on 15 Oct 2014 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Journal de la Société Ouest-Africaine de Chimie J. Soc. Ouest-Afr. Chim. Code Chemical Abstracts : JSOCF2 Cote INIST (CNRS France) : <27680> ISSN 0796-6687 18èmeAnnée, Juin 2013, N° 035 Site Web: http://www.soachim.org J. Soc. Ouest-Afr. Chim. (2013) 035 ; 57 - 63 Synthesis and crystal structure of a new calcium-containing trimesate coordination polymer: [Ca3(btc)2(H2O)12]∞. Magatte Camaraa*, Carole Daiguebonneb,c, Olivier Guilloub,c, Albert Manga Badianea, Insa Badianea, Saïbatou Yaguea, Florence Le Dretb,c.
    [Show full text]
  • Mossbauer Spectroscopic Studies of Complexes of Fe(III) with Nitrogen Containing Polymers
    Polymer Journal, Vol. 23, No. 4, pp 339~342 (1991) NOTES Mossbauer Spectroscopic Studies of Complexes of Fe(III) with Nitrogen Containing Polymers E. A. BEKTUROV, S. E. KUDAIBERGENOV, G. S. KANAPYANOVA, S. S. SALTYBAEVA, A. I. SKUSHNIKOVA, A. L. PAVLOVA, and E. S. DoMNINA * Institute of Chemical Science, Kazakh SSR Academy of Sciences, Alma-Ata 480100, Krasin Str. 106, USSR * Institute of Organic Chemistry Siberian Branch of Academy of Sciences of the USSR, Irkutsk, USSR (Received July 30, I 990) KEY WORDS Nitrogen Containing Polymers / Complex Formation / Mossbauer Spectroscopy / Coordination polymer compounds have EXPERIMENT AL been successfully used in various catalytic processes such as hydrogenation, oxidation, P2VPy, P2M5VPy, and P4VPy were synthe­ hydroformylation, polymerization, isomeriza­ sized by the radical polymerization of mono­ tion, etc. 1 Nitrogen containing polymers are mers in methanol at 333 K in presence of interesting polymer ligands that function as azobisisobutyronitrile (AIBN) as initiator. 8 supports in catalysis. Copolymers based on VI and VP were Complex formation ability of nitrogen synthesized by radical copolymerization in containing polymers in relation to the transi­ ethanol at 333 Kin the presence of AIBN. All tion metal ions is due to the presence of polymers and copolymers were purified by primary, secondary and tertiary aminogroups fractional precipitation. The compositions of which are able to form donor-acceptor copolymers were determined by IR spectros­ bonds. 2 - 7 The structures of coordination copy9 and by elemental analysis. PVI with compounds influence on the catalytic activity molecular weight 16 x l 03 and commercial of polymer-metal complexes. sample of PVP with molecular weight 5.6 x 10 5 In the present paper the results of an were used.
    [Show full text]
  • A New Calcium(II) Coordination Polymer Based on a Μ2-Bridging Tridentate 4-Nitrobenzoate
    Indian Journal of Chemistry Vol. 51A, March 2012, pp. 435-443 A new calcium(II) coordination polymer based on a µ2-bridging tridentate 4-nitrobenzoate Bikshandarkoil R Srinivasana, *, Santosh Y Shetgaonkara, Manav Saxenab & Christian Nätherc aDepartment of Chemistry, Goa University, Goa 403 206, India Email: [email protected] bDepartment of Chemistry, Indian Institute of Technology, Kanpur, 208 016 India cInstitut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Max-Eyth Strasse 2, D-24118 Kiel, Germany Received 17 September 2011; revised and accepted 16 January 2012 Reaction of a heptacoordinated Ca(II) compound [Ca(H2O)4(4-nba)2] (4-nba = 4-nitrobenzoate) with 3,5-dimethyl- pyrazole (dmp) leads to the formation of an eight coordinated Ca(II) compound, [[Ca(H2O)2(4-nba)2]·2dmp]n, containing two coordinated water molecules, two unique 4-nba ligands and two free dmp molecules in the lattice. The µ2-bridging tridentate binding mode of the unique 4-nba ligands results in the formation of a one-dimensional (1-D) coordination polymer. The title compound exhibits enhanced fluorescence emission. An analysis of the six different bridging binding modes of the 4-nba ligand in twenty two different structurally characterized 4-nitrobenzoate compounds is described. Keywords: Coordination chemistry, Calcium, 4-Nitrobenzoates, 3,5-Dimethylpyrazole, Coordination polymers, Metal organic frameworks Coordination polymers (CPs) also known as metal differing dimensionalities can be constructed. For the organic frameworks (MOFs) have attracted much oxophilic s-block metals, carboxylic acids are useful attention because of their topology and applications in linkers for the construction of coordination polymers catalysis, adsorption (gas storage), separation and as the metals can be linked into an extended chain luminescence1-3.
    [Show full text]
  • Synthesis and Characterization of a New Strontium(II) Coordination Polymer Based on a Μ2-Tridentate Bridging Zwitterionic Glyci
    Published in: Journal of Coordination Chemistry: 64(13); 2011; 2274-2283. Synthesis and characterization of a new strontium(II) coordination polymer based on a µ2-tridentate bridging zwitterionic glycine aS. Natarajan *, aJ. Kalyana Sundar, bS. Athimoolam, cBikshandarkoil R. Srinivasan a *School of Physics, Madurai Kamaraj University, Madurai 625 021, India b Department of Physics, University College of Engineering Nagercoil, Anna University of Technology Tirunelveli, Nagercoil 629 004, India c Department of Chemistry, Goa University, Goa 403206, India Abstract The synthesis and characterization of a new Sr(II) coordination polymer [Sr(H 2O)(H- gly)2Cl2]n 1 (H-gly = glycine) is described. Compound 1 crystallizes in the centrosymmetric orthorhombic space group Pcnb and its structure consists of a central Sr(II) ion, a terminal water, a unique zwitterionic glycine and a chloride ion. The central metal is nine coordinated and is bonded to six oxygen atoms from four different bridging H-gly ligands, two symmetry related chloride ions and a terminal water. The µ2-tridentate bridging nature of the zwitterionic glycine results in the formation of a one dimensional coordination polymer with a Sr···Sr separation of 4.560 Å across the chain. The chloride, H-gly and the coordinated water are involved in five varieties of H-bonding interactions. A comparative study of the structural chemistry of several alkaline-earth glycine compounds is described. Keywords: Coordination polymer; strontium; glycine; zwitterion. 1 REVISED MANUSCRIPT GCOO-2011-0182 1. Introduction Coordination polymers (CPs) also known as metal organic frameworks (MOFs) have attracted much attention because of their topology and applications in catalysis, adsorption (gas storage), separation, luminescence [1-3].
    [Show full text]