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Multistep, Reversible Redox Systems, XXXVI. - 11,11,12,12-Tetracyano-9,10-anthraquinodimethane (TCNAQ) and its Derivatives: Synthesis and Redox Properties
Aumueller, Alexander,Huenig, Siegfried
, p. 618 - 622 (2007/10/02)
Title compounds 3 Ba - d are synthesized from the corresponding anthraquinones and malononitrile with titanium tetrachloride/pyridine.By comparison of the potentials and semiquinone formation constants of 1 B - 3 B with those of the corresponding quinones 1 A - 3 A strong distortion of the biscyanomethylene groups in 2 B and especially 3 B is derived.
