DOCSLIB.ORG

New Route to Synthesize Surface Organometallic Complexes (SOMC): an Approach by Alkylating Halogenated Surface Organometallic Fragments

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
New Route to Synthesize Surface Organometallic Complexes (SOMC): an Approach by Alkylating Halogenated Surface Organometallic Fragments New Route to Synthesize Surface Organometallic Complexes (SOMC): An Approach by Alkylating Halogenated Surface Organometallic Fragments. Dissertation by Ali Hamieh In Partial Fulfillment of the Requirements For the Degree of Doctor of Philosophy King Abdullah University of Science and Technology Thuwal, Kingdom of Saudi Arabia February, 2017 2 EXAMINATION COMMITTEE PAGE The dissertation of Ali Hamieh is approved by the examination committee. Committee Chairperson: Professor Jean-Marie Basset Committee Members: Professor Kazuhiro Takanabe, Professor Udo Schwingenschlogl, Professor Joumana Toufaily. 3 © February, 2017 Ali Hamieh All Rights Reserved 4 ABSTRACT New Route to Synthesize Surface Organometallic Complexes (SOMC): An Approach by Alkylating Halogenated Surface Organometallic Fragments. Ali I. Hamieh The aim of this thesis is to explore new simpler and efficient routes for the preparation of surface organometallic complexes (SOMC) for the transformation of small organic molecules to valuable products. The key element in this new route relies on surface alkylation of various halogenated surface coordination complexes or organometallic fragments (SOMF). The first chapter provides an overview on the origin of organometallic compounds, their classical synthesis, characterization and some of their applications In the second chapter, novel silica-supported tungsten oxo-trimethyl complex [(≡Si-O- )W(=O)Me3] was synthesized using the new SOMC synthetic approach. WOCl4 was grafted on the surface of silica, partially dehydroxylated at 700°C (SiO2-700), and [(≡Si-O- )W(=O)Cl3] was produced. The supported complex methylated with ZnMe2 and transformed into [(≡Si-O-)W(=O)Me3], which was fully characterized. It was found that complex [(≡Si-O-)W(=O)Me3] has two conformational isomers at room temperature. This complex was found to be active in cyclooctane metathesis and direct transformation of ethylene to propylene. The third chapter elaborates the effect of substituents on catalysis. In this chapter we Dipp replace one methyl from [(≡Si-O-)W(=O)Me3] by a bulkier ligand (Im = 1,3-bis(2,6- diisopropylphenyl)imidazolin-2-iminato). Synthesis, structure, and olefin metathesis 5 Dipp activity of complex [(≡Si-O-)W(=O)(CH3)2-Im N] is reported. This complex proved to be an active pre-catalyst for self-metathesis of terminal olefins such as propylene and 1- hexene, showing better selectivity as compared to [(≡Si-O-)W(=O)Me3]. In the fourth chapter, surface alkylation strategy was used as a scalable method to synthesize the highly important complex [(≡Si–O−)WMe5] that obtained by in situ alkylation of the surface-grafted tungsten chloride [(≡Si–O−)WCl5] (1). Upon alkylation, a mixture of [(≡Si–O−)WMe5] and [(≡Si–O−)WMe2(≡CH)] was identified. The latter might have been generated by partial decomposition of the tungsten methyl chloride compound; this was confirmed by DFT calculations and experimental results. v In the fifth chapter, we isolated the first tetramethyl niobium complex [(≡SiO)Nb Me4] v (2) through the surface alkylation of [(≡SiO-)Nb Cl3Me] (1). Complex (1) was found to be active in the ethylene oligomerization by producing olefins up to C30, while surprisingly (2) selectively dimerizes ethylene into 1-butene and in both cases reaction occurs in the absence of any co-catalyst. 6 ACKNOWLEDGEMENTS I would like to extend thanks to the many people, who so generously contributed to the work presented in this thesis. Special mention goes to my great supervisor, Professor Jean-Marie Basset. I am highly honored and delighted to be his student. My PhD has been an amazing experience and I thank Professor Basset wholeheartedly, not only for his tremendous academic support, but also for giving me so many wonderful opportunities. Greatest gratitude to my committee members Professor Kazuhiro Takanabe, Professor Udo Schwingenschlogl and Professor Joumana Toufaily. So many people I need to thank especially Dr Manoja Samantaray, Dr Raju Dey, Dr Yin Chen, Dr. Ziyauddin Qureshi, Professor Valerio D’Elia, Dr Jérémie Pelletier and Dr. Santosh Kavitake. I thank them for the knowledge they share with me. I need to thank Dr. Edy Abou-Hamad for his contribution in lot of solid-state NMR experiments and for teaching me so many techniques. Special mention to Dr Youssef Saih for his fantastic training on dynamic flow catalytic reactions using PID reactors. I would like to thank Dr Safwat Abdellatif and Professor Luigi Cavallo for their contribution in the DFT calculations we perform. Finally, special mention goes to my friends Dr. Bilel Hamzaoui, Dr. Walid Almaksoud, Baraa Werghi, Reem Alshareef, Dr. Kushal Bhatte, Dr Samir Barman, Dr Niladri Maity, Dr. Janet Mohandas, Dr. Umesh Patil, Dr. Eva Pump, Dr. Anissa BendjeriouSedjerari, Gabriel Jeantelot, Dr. Michael J. Kelly, Dr. Jullian Vittenet, Dr. Serena Goh, Dr. Jeff Espinas and Dr.Julien SofackKreutzer., 7 DEDICATION To the biggest contributors since I opened my eyes to this world, to Mom and Dad. To the lady who I loved the most, my wife Rowaida and to the God’s gift for us, our son Hassan. To my special uncle Haj Mohammad Hamieh, I will always remember your advices, wisdom, and your white hands. To my family and all the beloved ones… 8 TABLE OF CONTENTS EXAMINATION COMMITTEE PAGE ......................................................................................... 2 ABSTRACT ............................................................................................................................. 4 DEDICATION .......................................................................................................................... 7 TABLE OF CONTENTS ............................................................................................................. 8 LIST OF ABBREVIATIONS ...................................................................................................... 12 LIST OF SYMBOLS ................................................................................................................ 13 LIST OF ILLUSTRATIONS ....................................................................................................... 14 LIST OF SCHEMES................................................................................................................. 19 LIST OF TABLES .................................................................................................................... 21 CHAPTER 1: Bibliography ..................................................................................................... 23 Introduction................................................................................................................... 24 1.1. Overview on Catalysts ............................................................................................ 24 1.2. Two main Types of catalysts: ................................................................................. 25 1.2.1. Homogeneous Catalysis ................................................................................... 25 1.2.2. Heterogeneous Catalysis ................................................................................. 25 1.3. Heterogeneous vs. Homogenous Catalysis ............................................................ 25 1.4. Bridging the gap by SOMC ...................................................................................... 26 1.5. History of SOMC ..................................................................................................... 27 1.6. SOMC complexes .................................................................................................... 27 1.6.1. Support ............................................................................................................ 28 1.6.2. Grafted Metals ................................................................................................. 30 1.6.3. Functional and spectator ligands .................................................................... 30 1.7. Grafting a complex ................................................................................................. 30 1.7.1 Reaction of Metal-Alkyl Complexes .................................................................. 30 1.7.2. Reactivity of Metal Alkoxide ............................................................................ 32 1.7.3. Reactivity of Metal halide ................................................................................ 33 1.8. Characterization ..................................................................................................... 33 9 1.9. Some Applications of SOMC based complexes ...................................................... 34 1.9.1. Metathesis of alkane ....................................................................................... 34 1.9.2. Conversion of ethylene into propylene ........................................................... 34 1.9.3. Olefin metathesis ............................................................................................. 36 1.10. Transition metal alkylation ................................................................................... 37 1.10.1. Alkylating agents rise ..................................................................................... 37 1.10.2. Importance of organometallic compounds ................................................... 37 1.10.3. Early transition metals coordinated to methyl ligands ................................. 38 1.10.4. Early transition metals coordinated to neopentyl ligands ...........................
Load more

Recommended publications
  • Geoffrey Wilkinson
    THE LONG SEARCH FOR STABLE TRANSITION METAL ALKYLS Nobel Lecture, December 11, 1973 by G EOFFREY W ILKINSON Imperial College of Science & Technology, London, England Chemical compounds in which there is a single bond between a saturated car- bon atom and a transition metal atom are of unusual importance. Quite aside from the significance and role in Nature of the cobalt to carbon bonds in the vitamin B 12 system and possible metal to carbon bonds in other biological systems, we need only consider that during the time taken to deliver this lec- ture, many thousands, if not tens of thousands of tons of chemical compounds are being transformed or synthesised industrially in processes which at some stage involve a transition metal to carbon bond. The nonchemist will pro- bably be most familiar with polyethylene or polypropylene in the form of do- mestic utensils, packaging materials, children’s toys and so on. These materials are made by Ziegler-Natta* or Philipps’ catalysis using titanium and chro- mium respectively. However, transition metal compounds are used as catalysts in the synthesis of synthetic rubbers and other polymers, and of a variety of simple compounds used as industrial solvents or intermediates. For example alcohols are made from olefins, carbon monoxide and hydrogen by use of cobalt or rhodium catalysts, acetic acid is made by carbonylation of methanol using rhodium catalysts and acrylonitrile is dimerised to adiponitrile (for nylon) by nickel catalysts. We should also not forget that the huge quantities of petroleum hydrocarbons processed by the oil and petrochemical industry are re-formed over platinum, platinum-rhenium or platinum-germanium sup- ported on alumina.
    [Show full text]
  • University of Southampton Research Repository Eprints Soton
    University of Southampton Research Repository ePrints Soton Copyright © and Moral Rights for this thesis are retained by the author and/or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder/s. The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given e.g. AUTHOR (year of submission) "Full thesis title", University of Southampton, name of the University School or Department, PhD Thesis, pagination http://eprints.soton.ac.uk UNIVERSITY OF SOUTHAMPTON FACULTY OF NATURAL AND ENVIRONMENTAL SCIENCES Chemistry DEVELOPMENT OF RESONANT INELASTIC X-RAY SCATTERING SPECTROSCOPY FOR 4d AND 5d TRANSITION METAL CATALYSTS Rowena Thomas Thesis for Degree of Doctor of Philosophy APRIL 2013 UNIVERSITY OF SOUTHAMPTON ABSTRACT FACULTY OF NATURAL AND ENVIRONMENTAL SCIENCES Chemistry Doctor of Philosophy DEVELOPMENT OF RESONANT INELASTIC X-RAY SCATTERING SPECTROSCOPY FOR 4d AND 5d TRANSITION METAL COMPLEXES By Rowena Thomas This research focuses on the development of Resonant Inelastic X-ray Scattering spectroscopy (RIXS) as a tool in homogeneous catalysis for 4d and 5d transition metals. In the RIXS data 2D plots of x-ray emission spectra as a function of absorption were obtained, showing the relationship between the two techniques as well as probing both the unfilled and filled DOS.
    [Show full text]
  • SDS US 2PD Version #: 01 Issue Date: 03-25-2021 1 / 6 Chemical Name Common Name and Synonyms CAS Number % Tungsten Chloride 13283-01-7 100
    SAFETY DATA SHEET 1. Identification Product identifier Tungsten Chloride Other means of identification SDS number 2PD Materion Code 2PD CAS number 13283-01-7 Manufacturer/Importer/Supplier/Distributor information Manufacturer Company name Materion Advanced Chemicals Inc. Address 407 N 13th Street 1316 W. St. Paul Avenue Milwaukee, WI 53233 United States Telephone 414.212.0290 E-mail [email protected] Contact person Laura Hamilton Emergency phone number Chemtrec 800.424.9300 2. Hazard(s) identification Physical hazards Not classified. Health hazards Skin corrosion/irritation Category 1 Serious eye damage/eye irritation Category 1 Environmental hazards Not classified. OSHA defined hazards Not classified. Label elements Signal word Danger Hazard statement Causes severe skin burns and eye damage. Causes serious eye damage. Precautionary statement Prevention Do not breathe dust/mist/spray. Wash hands thoroughly after handling. Wear protective gloves/protective clothing/eye protection/face protection. Response IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Immediately call a poison center/doctor. Wash/decontaminate removed clothing before reuse. Storage Store locked up. Disposal Dispose of contents/container in accordance with local/regional/national/international regulations. Hazard(s) not otherwise None known. classified (HNOC) Supplemental information None. 3. Composition/information on ingredients Substances Material name: Tungsten Chloride SDS US 2PD Version #: 01 Issue date: 03-25-2021 1 / 6 Chemical name Common name and synonyms CAS number % Tungsten Chloride 13283-01-7 100 4.
    [Show full text]
  • SDS EU 2PD Version #: 01 Issue Date: 25-March-2021 1 / 8 Hazard Statements H314 Causes Severe Skin Burns and Eye Damage
    SAFETY DATA SHEET SECTION 1: Identification of the substance/mixture and of the company/undertaking 1.1. Product identifier Name of the substance Tungsten Chloride Identification number 236-293-9 (EC number) Registration number - Document number 2PD Synonyms None. Materion Code 2PD Issue date 25-March-2021 Version number 01 1.3. Details of the supplier of the safety data sheet Supplier Company name Materion Advanced Chemicals Inc. Address 407 N. 13th Street 1316 W. St. Paul Avenue Milwaukee, WI 53233 United States Division Milwaukee Telephone 414.212.0257 e-mail [email protected] Contact person Laura Hamilton 1.4. Emergency telephone number 1.2. Relevant identified uses of the substance or mixture and uses advised against Identified uses Not available. Uses advised against None known. 1.3. Details of the supplier of the safety data sheet Supplier Company name Materion Advanced Chemicals Inc. Address 407 N. 13th Street 1316 W. St. Paul Avenue Milwaukee, WI 53233 United States Division Milwaukee Telephone 414.212.0257 e-mail [email protected] Contact person Laura Hamilton 1.4. Emergency telephone number SECTION 2: Hazards identification 2.1. Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 as amended Hazard summary Causes severe skin burns and eye damage. Causes serious eye damage. 2.2. Label elements Label according to Regulation (EC) No. 1272/2008 as amended Contains: Tungsten Chloride Hazard pictograms Signal word Danger Material name: Tungsten Chloride SDS EU 2PD Version #: 01 Issue date: 25-March-2021 1 / 8 Hazard statements H314 Causes severe skin burns and eye damage.
    [Show full text]
  • Safety Data Sheet Material Name: Wcl6 (Tungsten Hexachloride) SDS ID: 320P
    Safety Data Sheet Material Name: WCl6 (Tungsten Hexachloride) SDS ID: 320P Section 1 - PRODUCT AND COMPANY IDENTIFICATION Material Name WCl6 (Tungsten Hexachloride) Synonyms TUNGSTEN CHLORIDE; TUNGSTEN HEXACHLORIDE; TUNGSTEN (VI) CHLORIDE Chemical Family metal, halides Product Use semiconductor manufacture Restrictions on Use None known. Details of the supplier of the safety data sheet Entegris, Inc. 129 Concord Road Building 2 Billerica, MA 01821 USA Telephone Number: +1-952-556-4181 Telephone Number: +1-800-394-4083 (toll free within North America) Emergency Telephone Number: CHEMTREC - U.S. - 1-800-424-9300 CHEMTREC - Intl. - 1-703-527-3887 E-mail: [email protected] Section 2 - HAZARDS IDENTIFICATION Classification in accordance with paragraph (d) of 29 CFR 1910.1200. Skin Corrosion/Irritation - Category 1 Serious Eye Damage/Eye Irritation - Category 1 Specific target organ toxicity - Single exposure - Category 3 ( respiratory system ) GHS Label Elements Symbol(s) Signal Word Danger Hazard Statement(s) Causes severe skin burns and eye damage. May cause respiratory irritation. Precautionary Statement(s) Prevention ____________________________________________________________ Page 1 of 9 Issue date: 2020-03-26 Revision 3.4 Print date: 2020-03-26 Safety Data Sheet Material Name: WCl6 (Tungsten Hexachloride) SDS ID: 320P Do not breathe dust. Wash thoroughly after handling. Wear protective gloves/protective clothing/eye protection/face protection. Use only outdoors or in a well-ventilated area. Response Immediately call a POISON CENTER or doctor/physician. IF INHALED: Remove person to fresh air and keep comfortable for breathing. Specific treatment may be needed, see first aid section of Safety Data Sheet. IF ON SKIN (or hair): Take off immediately all contaminated clothing.
    [Show full text]
  • INORGANIC SYNTHESES Volume 23 Board of Directors
    INORGANIC SYNTHESES Volume 23 Board of Directors DUWARD F. SHRIVER Norrhwesrern University HENRY F. HOLZCLAW, JR. University of Nebraska BODIE E. DOUGLAS University of Pirrsburgh JAY H. WORRELL University of Sourh Florida JOHN P. FACKLER, JR. Texas A&M University SMITH L. HOLT, JR. Oklahoma State University Future Volumes 24 JEAN’NE SHREEVE University of Idaho 25 HERBERT D. KAESZ University of California, Los Angeles 26 HARRY R. ALLCOCK Pennsylvania State University 27 STEVEN D. ITTEL E. I. du Ponr de Nemours and Co. 28 ALVIN P. GINSBERG Bell Laboratories 29 ROBERT J. ANGELIC1 Iowa Srare University International Associates MARTIN A. BENNETT Australian National University FAUSTO CALDEWO University of Pisa E. 0. FISCHER Technische Universirar Miinchen SACK LEWIS Cambridge University LAMBERTO MALATESTA University of Milan RENE POILBLANC University of Toulouse HERBERT ROESKY University of Goningen F. G. A. STONE University of Brisrol GEOFFREY WILKINSON Imperial College of Science and Technology AKIO YAMAMOTO Tokyo Kogyo Daigaku (TokyoInstirure of Technology) Editor-in-Chief STANLEY KIRSCHNER Deportment of Chemistry Wayne State Universily Detroit, Michigan INORGANIC SYNTHESES Volume 23 A Wiley-Interscience Publication JOHN WILEY tk SONS New York Chichester Briskne Toronto Singapore Published by John Wiley & Sons, Inc. Copyright 0 1985 by Inorganic Syntheses, Inc. All rights reserved. Published simultaneously in Canada. Reproduction or translation of any part of this work beyond that permitted by Section 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful. Requests for permission or further information should be addressed to the Permissions Department, John Wiley & Sons, Inc. Library of Congress Caralog Number: 39-23015 ISBN 0-471-81873-9 Printed in the United States of America 10 9 8 7 6 5 4 3 2 I HARRYR.
    [Show full text]
  • Working with Hazardous Chemicals
    A Publication of Reliable Methods for the Preparation of Organic Compounds Working with Hazardous Chemicals The procedures in Organic Syntheses are intended for use only by persons with proper training in experimental organic chemistry. All hazardous materials should be handled using the standard procedures for work with chemicals described in references such as "Prudent Practices in the Laboratory" (The National Academies Press, Washington, D.C., 2011; the full text can be accessed free of charge at http://www.nap.edu/catalog.php?record_id=12654). All chemical waste should be disposed of in accordance with local regulations. For general guidelines for the management of chemical waste, see Chapter 8 of Prudent Practices. In some articles in Organic Syntheses, chemical-specific hazards are highlighted in red “Caution Notes” within a procedure. It is important to recognize that the absence of a caution note does not imply that no significant hazards are associated with the chemicals involved in that procedure. Prior to performing a reaction, a thorough risk assessment should be carried out that includes a review of the potential hazards associated with each chemical and experimental operation on the scale that is planned for the procedure. Guidelines for carrying out a risk assessment and for analyzing the hazards associated with chemicals can be found in Chapter 4 of Prudent Practices. The procedures described in Organic Syntheses are provided as published and are conducted at one's own risk. Organic Syntheses, Inc., its Editors, and its Board of Directors do not warrant or guarantee the safety of individuals using these procedures and hereby disclaim any liability for any injuries or damages claimed to have resulted from or related in any way to the procedures herein.
    [Show full text]
  • Toxicological Profile for Tungsten
    TOXICOLOGICAL PROFILE FOR TUNGSTEN U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service Agency for Toxic Substances and Disease Registry August 2005 TUNGSTEN ii DISCLAIMER The use of company or product name(s) is for identification only and does not imply endorsement by the Agency for Toxic Substances and Disease Registry. TUNGSTEN iii UPDATE STATEMENT A Toxicological Profile for Tungsten, Draft for Public Comment was released in September 2003. This edition supersedes any previously released draft or final profile. Toxicological profiles are revised and republished as necessary. For information regarding the update status of previously released profiles, contact ATSDR at: Agency for Toxic Substances and Disease Registry Division of Toxicology/Toxicology Information Branch 1600 Clifton Road NE Mailstop F-32 Atlanta, Georgia 30333 TUNGSTEN vii QUICK REFERENCE FOR HEALTH CARE PROVIDERS Toxicological Profiles are a unique compilation of toxicological information on a given hazardous substance. Each profile reflects a comprehensive and extensive evaluation, summary, and interpretation of available toxicologic and epidemiologic information on a substance. Health care providers treating patients potentially exposed to hazardous substances will find the following information helpful for fast answers to often-asked questions. Primary Chapters/Sections of Interest Chapter 1: Public Health Statement: The Public Health Statement can be a useful tool for educating patients about possible exposure to a hazardous substance. It explains a substance’s relevant toxicologic properties in a nontechnical, question-and-answer format, and it includes a review of the general health effects observed following exposure. Chapter 2: Relevance to Public Health: The Relevance to Public Health Section evaluates, interprets, and assesses the significance of toxicity data to human health.
    [Show full text]
  • ABSTRACT XIE, WENYI. Thermal Atomic Layer Etching and Vapor
    ABSTRACT XIE, WENYI. Thermal Atomic Layer Etching and Vapor Phase Infiltration for Carbon Material Synthesis (Under the direction of Dr. Gregory N. Parsons, Dr. Saad A. Khan, and Dr. Orlando J. Rojas). The semiconductor industry faces a tremendous amount of challenges in developing and producing electronic devices with sub-10nm feature sizes. The precise control of thickness and conformality for deposition and etching of materials are of critical importance. Atomic layer deposition (ALD) and atomic layer etching (ALE) are processing techniques based on sequential self-limiting reactions which allow atomic layers of materials to be added or removed at a time. Both ALD and ALE are considered highly promising techniques for enabling the production of future transistor structures. The first half of this thesis focuses on the development of thermal ALE processes for tungsten (W). Thermal ALE, based on thermal desorption of volatile etch products, is an appealing alternative to plasma based etching process for avoiding plasma-induced damages of sensitive device structures. We first investigated a thermal W ALE process using oxygen (O2) and tungsten hexafluoride (WF6). Based on insights gained from thermodynamic modeling, we proposed that W etching can proceed in two sequential reaction steps: 1) oxidation of W, and 2) formation and removal of volatile WO2F2 through reaction with WF6. However, the O2/WF6 process is limited to temperatures ≥ 275 °C. Through further thermodynamic modeling studies, we found that W etching is viable at lower temperatures using tungsten hexachloride (WCl6) as the etchant instead of WF6. This is mainly due to that WO2Cl2 is a more volatile etch product than WO2F2.
    [Show full text]
  • And Tungsten(IV) and the Oxochlorides of Tungsten(VI)
    University of the Pacific Scholarly Commons University of the Pacific Theses and Dissertations Graduate School 1965 The Binary Halides Of Molybdenum(IV) And Tungsten(IV) And The Oxochlorides Of Tungsten(VI) Edward Roy Epperson University of the Pacific Follow this and additional works at: https://scholarlycommons.pacific.edu/uop_etds Part of the Chemistry Commons Recommended Citation Epperson, Edward Roy. (1965). The Binary Halides Of Molybdenum(IV) And Tungsten(IV) And The Oxochlorides Of Tungsten(VI). University of the Pacific, Dissertation. https://scholarlycommons.pacific.edu/uop_etds/2865 This Dissertation is brought to you for free and open access by the Graduate School at Scholarly Commons. It has been accepted for inclusion in University of the Pacific Theses and Dissertations by an authorized administrator of Scholarly Commons. For more information, please contact [email protected]. ... ·~ ' .. .: ~ .. \, THE BINARY HALIDES OF Iv10LYBDENUM(IV) AND TUNGSTEN(IV) AND THE OXOCHLORIDES .OF 'rUNGSTEN (VI) A Dj. ssertation Presented to the Faculty of the Department of Chemistry University of the Pacific In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy by Edward Roy Epperson June 1965 This diss~rtaHon, written al}d submitted qy EdwardHoy Epperson is appJ"oved for r~commef\dation to the Gra~uate Council,· Vniver ~ity Qi the PCl-cific. · +-~~~~~~~~~~~~~------ ---- Department Chi;~.irrpan er .Qean:. Dissertation C~n:nmitt~e: v{~, ~~Vhairman /ZJ . , . A @. e::l:'J'~""* P . ·.· ~~-~::: .. _;~iil.ill. ACKNOWLEDGEMENTS The author wishes to express his sincere appreciation well-rounded program of graduate studies, to the entire Faculty of the Department of Chemistry for their invaluable implementation of these graduate studies, and especially to Dr.
    [Show full text]
  • SAFETY DATA SHEET Version 6.1 Revision Date 05/28/2017 Print Date 08/08/2019
    SIGMA-ALDRICH sigma-aldrich.com SAFETY DATA SHEET Version 6.1 Revision Date 05/28/2017 Print Date 08/08/2019 1. PRODUCT AND COMPANY IDENTIFICATION 1.1 Product identifiers Product name : Tungsten(VI) chloride Product Number : 241911 Brand : Aldrich CAS-No. : 13283-01-7 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified uses : Laboratory chemicals, Synthesis of substances 1.3 Details of the supplier of the safety data sheet Company : Sigma-Aldrich Inc. 3050 Spruce Street ST. LOUIS MO 63103 UNITED STATES Telephone : +1 314 771-5765 Fax : +1 800 325-5052 1.4 Emergency telephone number Emergency Phone # : +1-703-527-3887 2. HAZARDS IDENTIFICATION 2.1 Classification of the substance or mixture GHS Classification in accordance with 29 CFR 1910 (OSHA HCS) Skin corrosion (Category 1B), H314 Serious eye damage (Category 1), H318 For the full text of the H-Statements mentioned in this Section, see Section 16. 2.2 GHS Label elements, including precautionary statements Pictogram Signal word Danger Hazard statement(s) H314 Causes severe skin burns and eye damage. H318 Causes serious eye damage. Precautionary statement(s) P260 Do not breathe dust or mist. P264 Wash skin thoroughly after handling. P280 Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Aldrich- 241911 Page 1 of 8 P303 + P361 + P353 IF ON SKIN (or hair): Remove/ Take off immediately all contaminated clothing. Rinse skin with water/ shower. P304 + P340 + P310 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
    [Show full text]
  • Tungsten and Tungsten Compounds Tungsten and Tungsten Compounds
    Health Council of the Netherlands Tungsten and tungsten compounds tungsten and Tungsten Tungsten and tungsten compounds Evaluation of the carcinogenicity and genotoxicity 2013/16 2013/16 Health Council of the Netherlands Tungsten and tungsten compounds Evaluation of the carcinogenicity and genotoxicity Gezondheidsraad Health Council of the Netherlands Aan de minister van Sociale Zaken en Werkgelegenheid Onderwerp : aanbieding advies Tungsten and tungsten compounds Uw kenmerk : DGV/BMO-U-932542 Ons kenmerk : U-7820/SV/fs/246-Q18 Bijlagen : 1 Datum : 12 juli 2013 Geachte minister, Graag bied ik u hierbij het advies aan over de gevolgen van beroepsmatige blootstelling aan wolfraam- en wolfraamverbindingen. Dit advies maakt deel uit van een uitgebreide reeks waarin kankerverwekkende stoffen worden geclassificeerd volgens richtlijnen van de Europese Unie. Het gaat om stoffen waaraan mensen tijdens de beroepsmatige uitoefening kunnen worden blootgesteld. Dit advies is opgesteld door een vaste subcommissie van de Commissie Gezondheid en beroepsmatige blootstelling aan stoffen (GBBS), de Subcommissie Classificatie van carcinogene stoffen. Het advies is getoetst door de Beraadsgroep Gezondheid en omgeving van de Gezondheidsraad. Ik heb het advies vandaag ter kennisname toegezonden aan de staatssecretaris van Infrastructuur en Milieu en aan de minister van Volksgezondheid, Welzijn en Sport. Met vriendelijke groet, prof. dr. W.A. van Gool, voorzitter Bezoekadres Postadres Rijnstraat 50 Postbus 16052 2515 XP Den Haag 2500 BB Den Haag E-mail: [email protected] www.gr.nl Telefoon (070) 340 55 08 Tungsten and tungsten compounds Evaluation of the carcinogenicity and genotoxicity Subcommittee on the Classification of Carcinogenic Substances of the Dutch Expert Committee on Occupational Safety, a Committee of the Health Council of the Netherlands to: the Minister of Social Affairs and Employment No.
    [Show full text]