作者:J. Bellanato、E. Galvez
DOI:10.1016/0022-2860(83)85046-7
日期:1983.8
Abstract The IR and Raman spectra of 3-methyl-7-alkyl-3,7-diazabicyclo(3.3.1)nonane-9-spiro-5′-hydantoins have been studied in the solid state and in deuterium oxide solution. The crystalline spirohydantoins are of three types: (1) those containing strong N 3′ H⋯N bonds and N 1 H⋯O=C 2 bonds between pairs of molecules; (2) those of predominantly zwitterionic structure in the solid state and (3)_those
摘要 研究了固态和氧化氘溶液中 3-甲基-7-烷基-3,7-二氮杂双环(3.3.1)壬烷-9-螺-5'-乙内酰脲的红外光谱和拉曼光谱。结晶螺乙内酰脲分为三种类型:(1)分子对之间含有强N 3′ H⋯N键和N 1 H⋯O=C 2 键的螺乙内酰脲;(2) 在固态下主要是两性离子结构的那些和 (3)_在固态下主要是水合两性离子结构的那些。所有化合物在水溶液中均以两性离子形式存在。