Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/76905
Title: Rotational isomerism in 1,1′-dicyanobicyclopentyl, 1,1′-dicyanobicyclohexyl, and 1,1 '-dicyanobicycloheptyl
Authors: Chong, Y.S.
Chia, L.H.L. 
Huang, H.-H. 
Issue Date: 1985
Source: Chong, Y.S.,Chia, L.H.L.,Huang, H.-H. (1985). Rotational isomerism in 1,1′-dicyanobicyclopentyl, 1,1′-dicyanobicyclohexyl, and 1,1 '-dicyanobicycloheptyl. Journal of the Chemical Society, Perkin Transactions 2 (10) : 1567-1575. ScholarBank@NUS Repository.
Abstract: I.r. spectra of 1,1 '-dicyanobicyclopentyl, 1,1 '-dicyanobicyclohexyl, and 1,1 '-dicyanobicycloheptyl in the solid and solution states, and Raman spectra in the solid state are reported and assignment of frequencies made. Dipole moments in different solvents (benzene, carbon tetrachloride, and dioxane) at different temperatures and molar Kerr constants (in carbon tetrachloride and benzene) are also reported. Analysis of the dielectric data shows that, at 25 °C, the compounds in the series exist as rotameric mixtures in carbon tetrachloride solution containing 4.5, 11, and 38% respectively of the gauche rotamer. Benzene causes the gauche population to increase, as evidenced by the dipole moment and Kerr constant values in this solvent. Comparison of the Raman and i.r. spectra of the solids suggests that all three compounds exist in the trans conformation in the solid state.
Source Title: Journal of the Chemical Society, Perkin Transactions 2
URI: http://scholarbank.nus.edu.sg/handle/10635/76905
ISSN: 1472779X
Appears in Collections:Staff Publications

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