THE EFFECTS OF HYDROGEN BONDING AND METAL COMPLEXATION ON THE PHOTOPHYSICAL PROPERTIES OF AZINES
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Date
1973
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Ohio State University
Abstract
The $77^{\circ} K$ phosphorescence and excitation spectra of pyrazine and other azines in ethanol with various amounts of water, acetic acid, chloroform or trifluoroethanol are presented. These molecules are shown to form 1:1 and 2:1 complexes with pyrazine and to severly reduce its phosphorescence quantum yield. Solvent deuteration enhances the quantum yields considerably. Pyrazine is also shown to form 1:1 and 2:1 complexes with alkali metal ions in ethanol. The stability constants for these complexes will be presented. The photophysical properties of these complexes will be discussed.
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Author Institution: Department of Chemistry, New York University, University Heights