HA.FVAHD U N I V E R S I T Y

Dq:xJYtmcnt of ChemLst:ry J.'~' Oxfol'(. Street ,clfc _, IVIa s s.achusc t t:':l l) 1964

1" UNIVERSITY OF BIRMINGHAM Dep·2,rtment of Chemlstry (.John Sheridan)

('T;f F· T p.curnuck -'·'·2' ..L Fluoro-iodomethane Assigned C4H 0D (CH co.CCD) O.L.Stiefvater·Assigned 3 3 18 18 CL! H·4 o (CH\ J co .cr.H)'"' O.L.Stiefvater Assigned C?H-:;NO Iso:x:azole W. C. Mc1.ckrod t Tenta.tive _) _, Ass:Lgnment

2. UNIVERSITY OF CALIFORNIA Department of Chemistry w. D. Gwinn R. J. Myers Methyl Sulfurpenta­ Paper in progress fluoride Iodine Pentafluoride Work in progress Silyl methyl ether Work in progress

Eth~rleneimine Quadrupole and barrier paper in progress Trimethylene sulfide Assignment. including excited sta te.s C4H6 Cyclobutene Paper in Progress CF No Trifluoronitromethane Paper in progress 3 2 CH"")NOI"l (CR.:~ ONO) Methyl nitrite Paper in progress .) c. ..) •. c4Hg0 Tetrahydrofuran Assignment, including excited s cates :.orocyclobutane Paper in progress (con t :\ nue d. UJ\JIV1~HSITY OF CALIFOHNIA )

dr·of'ura.n

c lcpentclrJOne Ass1gnment 1 including exc1ted :=:: t;:;,, tc ~3 Assignment, including quadrupole splittings clobutyl fluoride Paper in progress

R

L\, UNIVE:RSITY OF COPENHAGEN Department of Crl.emica.. 1 Phy:::::Lcs ·- (:B{>rge Bak)

Thiazole D(2), D(5) and l5N-species assigned. Quadrupole of main species partly assigned, 1? Methyl Ketene Three mono- ~c-species and one deuterated species assigne· Pyrrole Main species reinve stiga ted at lower frequencies, dipole and quadrupole mcment measured. 15N, 13c(2), and l3C(3)-specie assigned. · Ortho Difluorobenzene Several Lines observed.

~· University of Freiburg Physikalisches Institut, Universitat Freiburg i.Br. (w. Maier)

C2H6os Dimethylsulfoxide H. Dreizler Normal, d-6, manuscript u. Q. Dendl being prepared, ( (CH )2 so) 3 C13 , S 34 , 0 18 , cen trl. f'uga l distortion in progress (continued UNIVERSITY OF PRELBURG)

Acntone H. Peter Normal~ barriers in progress d-6, work completed

r:Primc: trw la:m:tne ~ H. G. M:tnue.crlpt being l)Ol'"d.n.c compleX Sc.hirdewahn prepared '/ ~}'1' 'i ~)

H.D.Rudolph Just started.

,Sulf'urd:tcya.n:Lde H. Arnold Assignment in progress u. Q. Dendl

6 . GEORGIA INSTITUTE OP TECI-INOI.OGY School of Physics (Quitman Williams and 'r. L. Weatherly) Trichlorofluoro- A· Wolf Work continuing on methane quadrupole interactions Chloroform A.. Wolf Work continuing on quadrupole interactions Sulfur Dichloride J. Murray Assigned

7. HARVARD UNIVERSITY Department of Chemistry (E. B. Wilson, Jr.)

F2S2 (S2F2) Sulfur monofluoride R. Kuczkowski. Full paper in press.

F4 OXe (XeOF'4 ) Xenon oxyfluoride J. Martins Structure completed. CH Cl0 (CH 0cl) Methyl hypochlorite J, Rig den In press. 3 3 c2HF o (CF CHO) Trifluoroacetalde- c. Woods Structure and barrier 3 3 hyde completed. c2H2N2o 1,2,5-oxadiazole E. Saegebarth Manuscript in pre para ti.o1 (H-C-N-0-N-CH)

GeH s:t S:l..lyl germane R. Varma and Analyzed 6 p. Cox (SiH-:>GeH-:>) ~) ,__} (cont1nued HARVARD UNIVERSITY)

DJ. s5_ 1 fluoride p. Cox and AnaJ.yzecl ) R. Vai'ma

HNO:;> Nitric acid ~r. Ri veros and Structure .) (isotopes) P. Cox

trans 2~~3 epoxy­ M. Emptage Analyzed bu.t:at·Jc

f'1uorO!H:c t;v1 E. Saegebarth One form a.nalyzed .fJ..uo:ri

Methyl vinyl ether N. OWen Work in progress

j ~f 8. UNIVERSITY OF ,JODHPUR Physics Depar•tment (G. p. Srivastava)

• "'-\'n~ • c H Fo Monofluoroacetic G. p. Srivastava 2 3 2 acid (C~FCOOH) .. 9. UNIVERSITAT KIEL Lehrs=tuhl fur Chemische Physik (Werner Zeil) (CH':I) SiCCH Trimethylaethinyl- H. K. Bodenseh Work in progress ...,) .3 silan R· Gegenheimer

10. UNIVERSITY OF LOUVAIN Institut de Physique Moleculaire (M. de Hemptinne)

C2H6o Ethyl alcohol J.Michielsen­ Spectrum of the normal (C H -0H) Effinger species and 5 isotopic 2 5 species observed from 12 to 43 kMc. Manu­ script prepared •.. ~.)-

( contint:~ed UNIVERSITY OF I.OlTilii.IN)

-vJny l:'i.d.cme J.C.Chauff'm.lreaux Hotat1onal constantf, J'luorJ..de of four excited l!ltat( caJ cula tec'l.. JVJanu­ scr·lpt prepEtrecL

C' r,H~.?Be V1nyl bromtde R. p, Savariraj 'J:ranst tlons 3 _, 4 c .) assigned. Rotationa ( ) cOJlstants of' the flr': excited state calcu­ lated. Oxygen sulfide A. Defossez Spectrum actlJ.:lJ.ly measured between 9. 000 Me and LJ.(l. OOOXVI( Oxygen sulf:Lde R. Van Riet Rotational constants calculated.; ma.nu.­ scri.pt prepared..

11 . MICHIGAN STATE UNIVERSITY Department of Chemistry (R. H. Schwendeman) l3cD Cl Methy1 chloride J. Kelly Manuscript in 3 preparation l3cn Br Methy1 bromide J. Kelly Manuscript in 3 preparation c H Br 2-Bromopropane F. Tobiason Parent and C-13 3 7 species assigned ( CH CHBrCH ) 3 3 c n Br t-Butyl bromide D. Silverman C-13 species 4 10 as si.gned ( ( CH ) cBr) 3 3

C2 H NO Acetoxime R. Rogowski One species of paren 5 assigned (cH3CHzNOH) c2H Bo2 1,3,2-Dioxaboro­ J. Hand Parent assigned 5 lane ( CH2 0BHOC~) c n No Dirnethylformamide R· Schwendeman Parent partially 3 7 assigned. ( ( CH-:1 ) 0 NCHO) _j L. ~:· . NATIONAL BUREAU OF STANDAR.D-S Infrc:=n'ecl anc! 1\11crowave Spectro:::·.copy Section ( v:td H, Lide)

SO :rad.ic:=:tl Po we 11 a.n d Li. de M::mur:1cript 1n pre para t i.on

A1Cl Aluro.:l. n urn Lide Spectrum assigned monocblor:Lde

lf"u:r·y1 fluoride L1de Manuscript prepared

Cyanogen chloride Lafferty

D:tfluorobor1ne K:Ctsuya and L:i..de Spectrum assigned

CH?CCS:LH':) Me th;y 1f3l J.y 1-­ Kirchhoff and Almo::.;t complete ... ) ..• ) acetylene Lide HNSO Thiony1imine Kirchhoff Spectrum ass:t.gned

CH CH~CHCH'd cis-2-butene Sarachman Manuscript in 3 _! Preparation y '. HCOOH (excited Formic acid Sarachman Abandoned states) Perchloryl fluoride Lide Spectrum assigned

13. NATIONAL RESEARCH COUNCIL (OTTAWA) Division of Pure Physics (C. C. Costa in ) 13 18 Trans propenal c.c.costain 3 C ) 0 and (acrolein) 6 D species assigned in manuscript Cyclopentene s.s. Butcher Rotation-vibration interactions, in manuscript 14 · UNIVERSITY OF OKLAHOMA Department of physics (C. C. Lin) Koj lrna., Lin, Barrier determined Nakagaiva 15 . UNIVERSITY OF PADUA Instltute o:f Phys1cal Chemistry ( .PE1.olo G. Favero)

NOC1 A. M, M1rrl Search for B-type transitions in the 2 to 1 mrn region temporar1ly abandoned. p. G. Favero N1trogen quadrupole coupl1ng~ manu­ script prepared. NOBr A. Guarnier:L Nitrogen quadrupoJe coupling A. M. Mirri Millimetre wave spectrum for centri­ fugal analysis.

Asc1.3 NOBr i 1 6 . QUEEN'S UNIVERSITY, ONTARIO Physics Department (David B. McLay) ~---"'~''"""'""'''H"T'':""'~"'Ji•~·P.-v·r''""'~·~·~J""" Dichlorofluoro­ D. B. McLay Paper to appear in methane Can. J, Phys. CDCl? Chloroform-d D. B. McLay Microwave spectra of ._} asymmetric isotopic species 17 . RICE UNIVERSITY Department of Chemistry (Robert Curl)

CH?NOS Methyl N­ V· Rao a-type assignment _) Thionylamine and barrier ( CH3l'.J.SO) H N N-Methyl Methyl­ c2 5 enimine K.v.L.N.Sastry Accepted for publi­ (CH3N: CH2) cation. Viny 1 formate v. M. Rao Accepted for publi­ cation (contlnued RICE UNIVEHSITY)

N:i. trogencU.ox:Lde ,T. A.. Hodges on Proof ret·!Jr":nec'J.

,J. A. Hodgr~ son Line2. ob.served_. computer programminE completed,

18. STANFORD UNIVERSITY rnenri c\trv Department ,_,_(Vi~ t;~:r;-· W: La.~rie)

'.: ·:::, ~TCJ1~ TT'rimethy lamine:: J. Wollrcd::> Manuscript 1 ( '( C13: ) N ) 3 3

C"2 fT.. TNr Dimethylamine J. Wollrab Manuscrlpt (CH~) 0 NH ~ c Methy1 cyclobutane L. Scharpen Several st<.:tte0 assigned, Cyclobutanone L. Scharpen Manuscript 19. UNIVERSITY OF STOCKHOLM Institute of Physics (H. Selen) c H ClF 1-chJ.oro- p, Kokeritz Manuscript in 6 4 2-fluorobenzene preparation c H Fo 0-fluorophenol H. Selen Work in progress 6 5 m-fluorophenol (F.C6H4 .oH)

20. SWISS FEDERAL INSTITUTE OF TECHNOLOGY Physica1 Chemistry Department (Hs.H. Gunthard) Nitroethylene H. D. Hess Manuscript prepc'lred c H C1 Chloropropene w. Good Tentative assign­ 3 5 ments made ( C~=CC1-CH3 ) 21 . UNIVERSITY OF TEXAS Department of Chemistry (James E. Boggs)

Trifluoroethylene K. Dorris Normal species completed.

r:f.'JIE UNIVERSI'I'Y OF 'I'OKYO DepE:trtrnent of Chem:tstry (Yonezo Morlno)

Cl-L:)O, CD,/) F'ormalde hyde K. 1Takagi Excited vibrational t_.. C~ T. Oka states) manuscript (H CO, D co) 2 2 prepared Sulfur dioxide y. Kikuchi Excited vibrational s. Saito states, equilibrium E. Hirota structure in press. cos) cose Carbonyl sulfide C. Matsumura Excited vibra tione.l Carbonyl selenide states, equilibrium s true ture work completed. Oxygen difluoride s. Saito Excited vi bra tiona1 states) spectra in v J v states ass igr: 1 2 3 Carbonyl fluoride s. Saito Excited vibrational states, manuscript prepared. Nitryl chloride T. Tanaka Excited vibrational statesJ manuscript prepared

Nitryl fluoride T. Tanaka Excited vibrational states, spectra partially assigned Methyl bromide c. Hirose Excited vibrational states, spectra in v, v , v , 2 v states ' 5 6 3 assigned. (cont:Lnued THE UNIVER.SITY OF TOKYO)

ALLyl .fJ.uor:Lde E. Hlrota Rotational isomerism manuscript prepc:;.red

Allyl chloride E. Hlrota Rotational isomerism ga.uche and c1 :::~ for'ITJ.s detected, analysis ir progress

~:~3. e Ul\fi.VE~RSIT.Y COLLEGJJ: Chem1f:1try Department (D. J. M:tllen) NOF Nitrosyl fluoride K. s. Buckton Centrifugal distor­ t:.Lcn analy3:'L s made 01 l r: 16 l 11 ·1 P --~N OF~ ~~N~~OF and 14Nl60F

/ " 24 • STATE UNIVERSITY OF UTRECHT Physical Laboratory (H. A. Dij,kerman) DCCOCH 1-Methoxy ethyn-2D D. den Engelsen Spectrum assigned 3

25. University of Wisconsin Department of Chemistry (C. D. Cornwell)

CH~F 2 P Methyl difluoro E. A· Cohen Discontinued (cii rF ) phosphine 3 2

CH~F4P Monomethyl tetra­ fluoro phosphorane E. A. Cohen In progress (cH3PF4)

F5ro Iodine oxide penta­ s. B. Pierce In progress (IOFS) fluoride FOHl\1UL/\ INDEX

r;t EtB lr) To\Alnes a.nc1. Scha.vv1ovr .. re to Institution)

f r 1 . "'-., " ,., . . . ,-~ .,...., , t"'') .lC1 (, d _,.lJ.1!;31..,1J.rrl.. f7lr_lrJ0 ~· .. LC C HF-: (trifluoroethylene) - 21 0c.. ..)1 sCI., .) c I-IF' 0 ( trifluoroa.cetaldehyde) 7 2 3

C0H0 Fn (vinylidene fluoride) - 10 ;_meI C. c c c2H2F2o (fluoroacetyl fluoride) - 7 ('·l (;) ~- 1 J •.! -- C H N~,O ( 1$ 2 ·' 5;; -oxadj,azole) - 7 ClN (cyanogen chloride) - 12 2 2 C H Br (vinyl bromide) - 10 ~Cl?D ( ch.loroform-d) - 16 2 3 ,) C H Fo (monofluoroacetic) - 8 ~c1 3 F ( trichlorofluoromethane) - 6 2 3 2 C H No (nitroethylene) - 20 ~F 2 0 (carbonyl fluoride) - 22 2 3 2 . C H SN _ lLJ. :F?N0 (trifluoronitromethane) - 2 2 3 _) 9,_ :Hc1 F ( dich.lorofluorome thane) - 16 c2H4ClN (chloroaziridine) - 2 2 C H Bo (1,3,2-dioxaborolane) - 11 'HC1 (chloroform) - 6 2 5 2 3 C H N (n-methyl methylenimine) - 17 H2FI (fluoro-iodomethane) - 1 2 5 :H,O ( fOI'mB.ldehyde) - 22 C2H N (ethyleneimine) - 2 c 5 H o (formic acid) - 12 C2H No (acetoxime) - 11 2 2 5 C H o (ethyl alcohol) - 10 ~H3Br {methyl bromide) - 22 2 6 C H os (dimethylsulfoxide) - 5 ~H 3 Cl0 (methyl hypochlorite) - 7 2 6 :H'='F P (methyl difluoro .phosphine)- 25 C2H7N (dimethylamine) - 18 ,) 2 C N S (su.lfurdicyanide) - 5 ~H FLIP (monomethyl tetrafluoro - 25 2 2 3 phosphorane) (methyl sulfurpentafluoride)- 2 c H No (isoxazole) - 1 H3F5S 3 3 (thiazole) :H NOS (methyl n-thionylamine) c H Ns - 4 3 17 3 3 c H Do {1-me~hoxy ethyn-2D) . - 24 ~H 3 No 2 (methyl nitrite) - 2 3 3 c H o (trans propenal) ~H60Si ( sily 1 methyl ether) - 2 3 4 - 13 c H o (methyl ketene) - 4 :os (carbonyl sulfide) ~ 22 3 4 OSe (carbonyl selenid~) - 22 C')HLLO., (vj_nyl formate) - 17 _) ' c. (continued FORMULA INDEX)

( ll\:') ~ 20 C5H8 (methyl cyc1obutane) - 18

(' 8-' J... J \7,, l c. l:tl c H o (cyclopentanone) - 2 -- 5 8 c;,/ 5H •9 no-i,_).,. - 9 c H si ( tr:Lmethylaethinylsi1a.n) .. 9 5 10

.'f[tP ( .~.· c6H4ClF (l-chloro-2-fluorobenzene) 19 C6H4F2 (ortho difluorobenzene) - 4 :::?H Si (methylsilylacetylene) - 12 c6H Fo (o-fluorophenol - 19 _) 6 5 _m-fluorophenol) (2-bromopropane) - ll c H F (p-fluorotoluene) - 5 ~ 3 H7Br 7 7 ::; H NO (dime thylformamj.de) - 11 C1F0 (perchloryl fluoride) - 12 3 7 3 (trimethylamine) - 18 ClNO - 15 ClN0 (nitryl chloride) - 22 ::3Hl2NB (trimethy1amineborane - 5 2 complex) {sulfur dichloride) - 6 - 1 c1 2s ;;_J.H30D P - ' f.I 018 Cl 15 •'4 4 - 1 3 FH s1 (disilanyl fluoride) - 7 ; L!HSN ( pyrrole) - 4 5 2 FNO (nitrosyl fluoride) - : H (cyclobutene) - 2 23 4 6 FN02 (nitryl fluoride) - 22 :;_~H 6 o ( cyclobutanone) - 18 F20 (oxygen difluoride) - 22 ~ 4 H 6 o ( dihydrofuran) - 2 F2o2s (sulfuryl fluoride) - 12 H C1 (ch1orocyclobutane) - 2 4 7 F2s2 (sulfur monofluoride) - 7 H F (cyclobuty1 fluoride) - 2 4 7 F oxe (xenon oxyfluoride) - 7 :LJ.Hs ( cis-2-butene) - 12 4 F r (iodine pentafluoride) - 2 4HgO (trans 2-3 epoxybutane) - 7 5 F ro (iodine oxide pentafluoride) - 25 4H80 (tetrahydrofuran) - 2 5 GeH6Si (silyl germane) - 7 4H10Br (t-butyl bromide) - 11 HBF (difluoroborine) - 12 Hg (cyc1opentene) - 13 2 5 (continued FORMULA INDEX)

HN0 (n:l:tr:tc acid) - 7 3 HNSO ( th:Lonylim1ne) -· 12

N0 0 (nitrogen dioxide) - 17 L OS rru:3 .. :t ca 1 - l? s ( dE') -· 22s 10

HAH'JAHD U N I V 8 TI 3 I 1 ~ . Department of Chemistry 12 Oxford Street Cambridge 38, Massachusetts

June 16, 1964

Dear Contributor~

This is an addition to the microwave spectroscopy inforrr~­ tion letter:

THE UNIVERSITY OF BIRMINGHAM Department of Chemistry (John Sheridan)

l1'luoro-bromomethane p. Curnuck notational and quadrupole assignment

C3H31-i' 3-Fluoropropyne B. E. Job Carbon-13 species measured (CH2FCCH)

C 4H 5 D Butyne-1-d B· E. Job Assigned ( c B: ccD) 2 5 c IN Iodo-cyanoacetylene T. Bjorvatten Constants in 3 ground and excited ;:>tate s

C BrN Bromo-cyanoacetylene 'I'• BJorvatten (J cJt18 ·t .,:;, :trl 3 ground excitea s tes Diazoethane c. L. Dodson rrentati ve assigmnent

Trifluoro-ethylene O.L. Stiefvater Assigned. Dipole moment, rp~~nta tlve .:u?.signmnnt ol carb( 13 upec ;:~~