Spectral Luminescent Properties and Nature of Electronically Excited States of Sulfaguanidine in Water

The absorption and fluorescence spectra of sulfaguanidine, its complexes with hydrogen bonds, doubly charged cationic forms have been studied experimentally theoretically. orbital nature electronically excited states is established a theoretical interpretation the given. It was shown that main reason for anomalously large Stokes shift rearrangement benzoid structure phenyl fragment sulfaguanidine into quasi-quinoid one. influence formation bonds addition proton on amount charge transfer between weakly bound fragments molecule has Keywords: sulgin, spectra, fluorescence, quantum chemical calculation.