Vibrational Spectra and Assignments for trans-3, 4-Difluorocyclobutene

Title:
Vibrational Spectra and Assignments for trans-3, 4-Difluorocyclobutene
Authors:
Craig, Norman C.; Hawley, Susan E.; Lee, Lac V.; Pearson, Ann
Abstract:
An investigation of the IR and Raman spectra of trans-3,4-difluorocyclobutene has yielded an assignment of all 24 vibrational fundamentals. These frequencies are in cm^-^1: (a) 3106, 2977, 1559, 1354, 1193, 1175, 1143, 1038, 993, 931, 602, 309, 171; (b) 3088, 2976, 1332, 1298, 1201, 1065, 971, 844, 684, 426, 324. This assignment correlates well with the fundamentals of trans-3,4-dichlorocyclobutene. The frequency for the ring puckering mode at 171 cm^-^1 fits into an emerging pattern in which this lowest frequency mode in cyclobutenes appears to be largely independent of other skeletal modes and predictably dependent on the nature, extent and location of halogen substitution. The assignment of the configuration of trans-3,4-difluorocyclobutene, which is a new substance, is based on an analysis of the NMR spectra of this material and its cis isomer.
Citation:
Craig, Norman C., Susan E. Hawley, Lac V. Lee, and Ann Pearson. 1994. "Vibrational Spectra and Assignments for trans-3, 4-Difluorocyclobutene." Spectrochimica Acta Part A: Molecular Spectroscopy 50(2): 191-201.
DATE ISSUED:
1994
Department:
Chemistry
Type:
Article
PUBLISHED VERSION:
10.1016/0584-8539(94)80046-4
PERMANENT LINK:
http://hdl.handle.net/11282/334121

Full metadata record

DC FieldValue Language
dc.contributor.authorCraig, Norman C.en
dc.contributor.authorHawley, Susan E.en
dc.contributor.authorLee, Lac V.en
dc.contributor.authorPearson, Annen
dc.date.accessioned2014-11-10T14:14:11Z-
dc.date.available2014-11-10T14:14:11Z-
dc.date.issued1994en
dc.identifier.citationCraig, Norman C., Susan E. Hawley, Lac V. Lee, and Ann Pearson. 1994. "Vibrational Spectra and Assignments for trans-3, 4-Difluorocyclobutene." Spectrochimica Acta Part A: Molecular Spectroscopy 50(2): 191-201.en
dc.identifier.issn0584-8539en
dc.identifier.urihttp://hdl.handle.net/11282/334121-
dc.description.abstractAn investigation of the IR and Raman spectra of trans-3,4-difluorocyclobutene has yielded an assignment of all 24 vibrational fundamentals. These frequencies are in cm^-^1: (a) 3106, 2977, 1559, 1354, 1193, 1175, 1143, 1038, 993, 931, 602, 309, 171; (b) 3088, 2976, 1332, 1298, 1201, 1065, 971, 844, 684, 426, 324. This assignment correlates well with the fundamentals of trans-3,4-dichlorocyclobutene. The frequency for the ring puckering mode at 171 cm^-^1 fits into an emerging pattern in which this lowest frequency mode in cyclobutenes appears to be largely independent of other skeletal modes and predictably dependent on the nature, extent and location of halogen substitution. The assignment of the configuration of trans-3,4-difluorocyclobutene, which is a new substance, is based on an analysis of the NMR spectra of this material and its cis isomer.en
dc.language.isoen_USen
dc.identifier.doi10.1016/0584-8539(94)80046-4en
dc.subject.departmentChemistryen
dc.titleVibrational Spectra and Assignments for trans-3, 4-Difluorocyclobuteneen
dc.typeArticleen
dc.identifier.journalSpectrochimica Acta Part A: Molecular Spectroscopyen
dc.identifier.volume50en
dc.identifier.issue2en
dc.identifier.startpage191en
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