IR and Raman studies of 3,7-diazabicyclo(3.3.1)nonane-9-spiro-5′-hydantoins
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