Conformational studies of 2-methyl-3-phenylpropionic acid, 2-phenylbutyric acid and their methyl esters by NMR spectroscopy
β Scribed by S.L. Spassov; R. Stefanova
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 226 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0022-2860
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π SIMILAR VOLUMES
Rotationally resolved fluorescence excitation spectra of the S~ ~-S o origin bands of two conformers of methyl-3-aminobenzoate and four conformers of ethyl-3-aminobenzoate have been obtained. Analyses of these spectra yield the rotational constants of each conformer in the two electronic states and
Vibrational spectra were obtained for the structurally similar compounds 2-methylbutyronitrile and 3-methyl-1-pentyne, and vibrational assignments were made with the aid of normal coordinate calculations. Molecular mechanics calculations were also made, and each compound was shown to exist as a mixt