论文部分内容阅读
总结和归属了α－呋喃甲酸酯、α－呋喃甲醇酯和α－呋喃丙烯酸酯的主要红外吸收谱带和特征，讨论了其红外吸收频率随取代基结构而变化的规律。结果表明：α－呋喃环存在三个明显的吸收特征。α－呋喃丙烯酸酯中νＣ＝Ｃ约为１６４１ｃｍ－１，δ＝Ｃ—Ｈ面外变角振动频率为９７３ｃｍ－１，表明双键为反式构型。νＣ＝Ｏ约为１７１３ｃｍ－１，ＯＣＣ键对称与不对称伸缩振动在１３０５，１２６２和１１６５ｃｍ－１处产生三个强的特征吸收峰。
The main infrared absorption bands and characteristics of α-furoate, α-furfuryl alcohol ester and α-furyl acrylate were summarized and assigned. The regularity of infrared absorption frequency changing with the substituent structure was discussed. The results show that there are three obvious absorption features in α-furan ring. α-furanacrylate νC = C about 1641cm-1, δ = C-H plane outside the angular vibration frequency of 973cm-1, indicating that the double bond trans configuration. νC = O is about 1713cm-1. The symmetric and asymmetric stretching of OCC produces three strong characteristic absorption peaks at 1305, 1262 and 1165 cm-1.