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벤조니트릴류의 니트릴신축진동에 대한 치환기와 용매의 효과
홍순영,박용대 慶北大學校 1971 論文集 Vol.15 No.-
The nitrile stretching frequency gives a strong peak in infrared field. The nitrile stretching frequencies of o-, or p-substituted benzonitriles in the solid phase and in the liquid solvents, that is, carbontetracholoride and chloroform, have been determined by an IR Spectrophotometer. Substituted benzonitriles give better correlation with σ^+ than with σ. This means that direct resonance interaction is significant for the nitrile stretching frequency. But o-methyl benzonitriles give poor correlation with σ^+ or σ, it means that the steric effects on nitrile stretching frequency is more significant than the polar effect. The equations, ν_CHCI3=5.8σ^++2222.6, ν_CCI4=3.7σ^++2223.4, ν_KBr=7.2σ^++2211.9, were obtained, making it possible to calculate the nitrile stretching frequency for benzonitriles.