Structure of a 1:2 Electron Donor-Acceptor Complex of 9,9′-Diethyl-3,3′-di-9H-carbazolyl and Tetracyanoethylene

Abstract

In the title electron donor-acceptor complex, C₂₈H₂₄N₂·2C₆N₄, the 9,9′-diethyl-3,3′-di-9H-carbazolyl molecule lies on a crystallographic inversion center, which is located at the mid-point of the C3-C3′ bond. In the crystal structure, two TCNE molecules are located above and below the central rings of the two neighboring donor molecules. The donor molecule is planar with a dihedral angle between the planes of each carbazolyl groups of 0.08(8)°. The molecular packing is stabilized mainly by donor-acceptor π-π interactions.