2-Dicyanomethylene-1,3-Indanedione: A New Electron Acceptor
- 21 July 1967
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 157 (3786), 314-316
- https://doi.org/10.1126/science.157.3786.314
Abstract
The electron affinity of 2-dicyanomethylene-1,3-indanedione (I) (1.33 ev), as computed from charge-transfer spectral analysis and from polarographic measurements of half-wave reduction potential, shows that the incorporation of the 2-dicyanomethylene moiety in 1,2,3-indanetrione (II) enhances its π-acid character. The electron spin resonance spectrum of the anion radical of I, generated electrolytically in solution, shows hyperfine structure that is due to two nitrogen atoms and four equivalent hydrogen atoms.Keywords
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