Beiträge zur Chemie der Pyrrolpigmente, 6. Mitt.: Dipolmomente von substituierten Pyrromethenen |
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| Authors: | Doz. Dr. H. Falk S. Gergely Dr. O. Hofer |
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| Affiliation: | 1. Lehrkanzel für Organische Chemie der Universit?t Wien, W?hringer Stra?e 38, A-1090, Wien, ?sterreich
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| Abstract: | ![]()
The dipole moments of three symmetrically and one, unsymmetrically substituted pyrromethene derivatives were determined using cyclohexane as solvent. By comparison of these moments with those obtained from a semiempirical quantum mechanical treatment including all valence electrons (CNDO/2), the predominance of one tautomeric form of the unsymmetrically substituted species was deduced. |
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