Conformational analysis of polymethine dyes derived from the 2-azaazulene
作者:Aleksey B. Ryabitskii、Julia L. Bricks、Aleksey D. Kachkovskii、Vladimir V. Kurdyukov
DOI:10.1016/j.molstruc.2011.10.003
日期:2012.1
Abstract A systematic investigation of the conformational structure was performed for the series of symmetrical and unsymmetrical mono-, tri-, pentamethine cyanines, and styryl dyes bearing 2-azaazulenium terminal group. The rotation energy barriers of terminal groups were determined via the dynamic variable temperature NMR experiments. The conformational transformation energy was calculated by quantum