2005
DOI: 10.1081/sl-200062847
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1π→1π* Ultraviolet Absorption Bands and Electronic Charge Transfers in Singlet Excited States of Sulfur Aromatic Heterocycles

Abstract: Indoline-2-thione (BC), benzimidazole-2-thione (BN), benzoxazole-2-thione (BO), and benzothiazole-2-thione (BS) define an interesting series of aromatic compounds containing a NCS synthonic unit in a heterocyclic ring of five centers, substituted by atomic centers of the type C, N, O, or S, where the main electronic absorption bands are localized in the spectral range of ultraviolet A or B.The first two singlet electronic transitions of this series, 1 S 0 ! 1 S 1 (n,p à ) and 1 S 0 ! 1 S 2 (p,p à ), determine … Show more

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Cited by 4 publications
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