L. Kaczmarek et al., STRUCTURE AND PHOTOPHYSICS OF DEAZABIPYRIDYLS - EXCITED INTERNALLY HYDROGEN-BONDED SYSTEMS WITH ONE PROTON-TRANSFER REACTION SITE, Perkin transactions. 2, (7), 1994, pp. 1603-1610
Two deazabipyridyls, 2-(2-hydroxyphenyl)pyridin-3-ol 1 and 2-(2-pyridy
l)phenol 2, are the objects of X-ray and spectroscopic studies. Their
syntheses, crystal structures and photophysics in comparison with [2,2
'-bipyridyl]-3,3'-diol and [2,2'-bipyridyl]-3-ol 3 are described. The
influence of the molecular structure on the efficiency of the proton-t
ransfer reaction in the S1 state is discussed. The experimental data a
re compared with semiempirical quantum chemical calculations.