Radical cation formation and crystal structure determination of 4′-dimethylamino-10-phenylpyrido[3,2-b]benzothiazine |
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| Authors: | Misa V. Jovanovic Edward R. Biehl Patrice De Meester Shirley S. C. Chu |
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| Affiliation: | 1. Department of Chemistry, Southern Methodist University, Dallas, Texas 75275;2. School of Engineering and Applied Science, Southern Methodist University, Dallas, Texas 75275 |
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| Abstract: | The crystal structure of title compound, 4 , shows that the 10-aryl group is parallel to the plane bisecting the pyridobenzothiazine ring. This structure is in contrast to that normally found for phenothiazines substituted with electron-withdrawing substituents on the 10-phenyl ring. In those compounds, the 10-aryl group is perpendicular to the plane bisecting the phenothiazine ring. The esr spectrum of the cation radical of 4 shows that the radical is located on the hetero ring system which is opposite to that of the cation radical of 4′-dimethylamino-10-phenylphenothiazine in which the radical is located on the 10-aryl ring. |
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