Assignment of the B₁ (Antisymmetric) Ring Deformation in Ethylene Oxide Using High-Resolution FT-IR

Authors: Nyquist, R.A.; Putzig, C.L.

Source: Applied Spectroscopy, Volume 40, Issue 1, Pages xix-116 (January 1986) , pp. 112-112(1)

Publisher: Society for Applied Spectroscopy

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Abstract:

Assignment of the B₁ (antisymmetric) ring deformation in ethylene oxide has been the subject of controversy. This B₁ vibration should produce a type-A IR band, and Lord and Nolin report a Q-branch peak at 892 cm^-1 which they assign as the B₁ ring deformation. Thompson and Cave have suggested that the absorption maximum near 840 cm^-1 results from this B₁ fundamental. Lord and Nolin obtained a vapor-phase IR spectrum of ethylene oxide-d₄, and they assigned the 809 cm^-1 type-A band to the B₁ ring deformation. By application of the product rule for the B₁ class in ethylene oxide and ethylene oxide-d₄, Lord and Nolin have demonstrated that it is reasonably certain that the B₁ antisymmetric ring deformation must occur near 890 cm^-1.

Keywords: Infrared; Molecular structure; Vapor-phase FT-IR

Document Type: Short communication

DOI: http://dx.doi.org/10.1366/0003702864815529

Affiliations: 1: Analytical Laboratories, 574 Building, Dow Chemical Company, Midland, Michigan 48667

Publication date: 1986-01-01

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