New podands with terminal chromogenic moieties derived from formazans

AR Katritzky, SA Belyakov, OV Denisko…

Index: Katritzky, Alan R.; Belyakov, Sergei A.; Denisko, Olga V.; Maran, Uko; Dalal, Naresh S. Journal of the Chemical Society. Perkin Transactions 2, 1998 , # 3 p. 611 - 615

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Citation Number: 2

Abstract

Synthesis of several new podands, bearing various terminal chromophoric functions of formazan (9–11), verdazyl (18–20) and verdazylium salt (21–23) types and having a different length of oligooxyethylene bridge between chromophoric units, is developed. Calculated (Alchemy-2000) and found (EPR data) distances between spin centers in bis- radicals 18–20 correlate well. Such spin-labeled species could be good models for the ...