9-Phenylxanthen-9-ylium and 9-Phenylthioxanthen-9-ylium Ions: Comparison of o-and p-Substitutions in the 9-Phenyl Group by Cyclic Voltammetry and Visible …

…, M Asahara, M Miyamoto, K Goto, M Wada

Index: Erabi, Tatsuo; Asahara, Masahiro; Miyamoto, Masahumi; Goto, Keisuke; Wada, Masanori Bulletin of the Chemical Society of Japan, 2002 , vol. 75, # 6 p. 1325 - 1332

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Citation Number: 5

Abstract

9-Arylxanthen-9-ylium (3a–i) and 9-arylthioxanthen-9-ylium (4a, b, e–i) perchlorates [aryl= 2, 4, 6-(MeO) 3 C 6 H 2 (a), 2, 6-(MeO) 2 C 6 H 3 (b), 2-MeOC 6 H 4 (c), 4-MeOC 6 H 4 (d), 3-Br- 2, 6-(MeO) 2 C 6 H 2 (e), 2, 4, 6-Me 3 C 6 H 2 (f), 2-MeC 6 H 4 (g), 4-MeC 6 H 4 (h), C 6 H 5 (i)] were prepared by the reactions of 9-arylxanthen-9-ols or 9-arylthioxanthen-9-ols with perchloric acid. Their LUMO and HOMO levels were estimated from the redox potential (E ...