Studies on TMPD:TCNB; a Donor-Acceptor with Room Temperature Paramagnetism and (n-π) Interaction

Published

December 1, 2004

Author(s)

Prasanna S. Ghalsasi, Brant Cage, Jeff L. Yarger

Abstract

A donor-acceptor compound based on N,N,N',N'}-tetramethyl-p}-phenylenediamine and 1,2,4,5}-tetracyanobenzene (TMPD:TCNB) has been synthesized. The crystal structure of the black 1:1 complex formed between TMPD and TCNB has been determined by single crystal X-ray diffraction at room temperature. The compound crystallizes in the triclinic space group P-1} with cell dimensions: a} = 7.4986(15) ', b} = 7.6772(11) ', c} = 8.0764(15) ', α = 78.822(12)°, β = 83.3779(19)°, γ = 86.289(17)°. TMPD and TCNB molecules are stacked alternately in infinite columns along the a}-axis. The structure does not seem to show the usual π-π interaction between the two aromatic rings, but indicates an n}-π interaction localized between the nitrogen atoms of the donor and the cyano groups of the acceptor.

Citation

Molecules

Issue

9

Pub Type

Journals

Keywords

Charge transfer complex, Donor-Acceptor, magnetism

Citation

Ghalsasi, P. , Cage, B. and Yarger, J. (2004), Studies on TMPD:TCNB; a Donor-Acceptor with Room Temperature Paramagnetism and (n-π) Interaction, Molecules (Accessed October 14, 2025)