VIBRATIONAL CIRCULAR DICHROISM OF DIMETHYL-TARTRATE

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VIBRATIONAL CIRCULAR DICHROISM OF DIMETHYL-TARTRATE

Chang Su,Timothy A. Keiderling-1979-01-01-The Knowledge Bank (The Ohio State University)

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TL;DRAbstract

Dimethyl-tartrate is the only molecule that has been found to show a degenerate coupled oscillator vibrational circular dichroism (VCD) spectrum. VCD spectra of this molecule in the O-H and C=O stretching regions will be presented. Both VCD features have bisignate shape but opposite signs. This is one of the first VCD measurements in the C=O region. Temperature dependence of the O-H VCD has also been studied. Both can be qualitatively interpreted by using the degenerate coupled oscillator model. Combined with nmr data, a dominant conformation in solution will be proposed.

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Dimethyl-tartrate is the only molecule that has been found to show a degenerate coupled oscillator vibrational circular dichroism (VCD) spectrum. VCD spectra of this molecule in the O-H and C=O stretching regions will be presented. Both VCD features have bisignate shape but opposite signs. This is one of the first VCD measurements in the C=O region. Temperature dependence of the O-H VCD has also been studied. Both can be qualitatively interpreted by using the degenerate coupled oscillator model. Combined with nmr data, a dominant conformation in solution will be proposed.

Keywords

Vibrational circular dichroismTartrateCircular dichroismChemistryCrystallographyBiochemistry

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