Photo-and thermochromic spiranes 30*. Comparative study by X-ray structural analysis of the structure of spiropyrans of the indoline series containing a condensed furan fragment
作者:B. S. Lukyanov、A. N. Utenyshev、V. V. Tkachev、S. M. Aldoshin、V. I. Minkin、M. B. Lukyanova、Yu. S. Alekseenko
DOI:10.1007/s10593-008-0034-4
日期:2008.2
The structure of an indoline spiropyran of molecular formula C29H33NO2 has been studied by X-ray crystallographic analysis. Structural parameters have been determined for this spiropyran, containing a condensed furan fragment with a tert-butyl group, in comparison with the structure of other spiropyrans of this series. The observation in the absorption spectrum of a photoinduced cis-cis isomer is linked with its stabilization by the steric effect of the bulky tert-butyl group and the strength of barriers at 77 K.