Structure of a 1:2 electron donor-acceptor complex of 9,9'-diethyl-3,3'-di-9h-carbazolyl and tetracyanoethylene
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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.