Absorption Spectra of Substituted 2-Phenylindan-1,3-Dion-2-YL Radicals in Solution
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Abstract Flash photolysis of a series of 2-phenylindandione-1,3 derivatives substituted in the 4′ position results in both the formation of stable benzylidenephthalides and of phenylindan-1,3-dion-2-yl radicals. The u. v. absorption maxima of these radicals are dependent on the solvent and show a bathochromic shift upon substitution. These substitution effects were correlated by means of a linear free energy relationship. Attempts were made to draw conclusions concerning the changes in the gap of the states involved and their curvature due to substitution.
2003 ◽
Vol 7
(9)
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pp. 799-819
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2008 ◽
Vol 27
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pp. 1130-1139
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1965 ◽
Vol 30
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pp. 434-438
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1987 ◽
Vol 137
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pp. 471-474
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