【摘要】 <正> 长链单不饱和脂肪醇乙酸酯作为鳞翅目昆虫的性外激素有着重要的实用价值。我们曾探讨了该类化合物的红外及拉曼光谱与其结构变化的关系。有关该类化合物的简正坐标分析尚未见报导。鉴于该类化合物随链长和双键位置的变化具有十分相似的光谱,本文以顺-3-己烯醇乙酸酯为模型,采用局部对称的U-B力场,取得了比较满意的结果。更多还原

【Abstract】 A normal coordinate analysis was performed for all vibrational modes of three groups: acetate, double bond and straight chain alkane in cis-3-hexenol aceate as a model for long chain mono-unsaturated alcohol esters by using local symmetry coordinate force field. The assignment of the normal frequencies was made. The calculated frequencies were in good agreement with the observed ones. A set of force constants for the vibrational modes and some main interaction force constants were obtained. The double degenerated vibrational modes in methyl for stretching, deformation and rocking were differentiated.更多还原