A novel π-donor–π-acceptor system: 1-(4,5-dimethyl-1,3-dithiol-2-ylidene)-1-ferrocenyl-3,3-dicyanopropene
摘要:
The title compound was prepared by reacting the anion of malononitrile with the corresponding ethanal, and characterised by W-vis absorption spectroscopy, cyclic voltammetry and X-ray crystallography. Attachment of an additional ferrocenyl donor group to the pi-donor-pi-acceptor system does not enhance intramolecular charge transfer, because its bulk distorts the planarity of the conjugated chain. (C) 1999 Elsevier Science S.A. All rights reserved.