Structure and magnetic properties of meso-tetrakis(2,4,6-trimethylphenyl)porphyrinatomanganese(III) 7,7,8,8-tetracyano 2,5-dimethyl-p-quinodimethanide with a 2.3 K Tc. The first example of cis-coordination of a tetracyano-p-quinodimethanide

The crystal structure of meso-tetrakis(2,4,6-trimethylphenyl)porphyrinatomanganese(III) 7,7,8,8-tetracyano-2,5-dimethyl-p-quinodimethanide, [MnTMesP][DMTCNQ]-2p-C6H4Me2 provides the first example of a cis-1,2-u-coordination motif having an infinite zigzag chain structure. [MnTMesP][DMTCNQ]-2p-C6H4Me2 crystallizes in a triclinic P1 space group. The zigzag one-dimensional (1-D) chain is non-uniform and each acceptor does not lie on a centre of symmetry, although all acceptors are crystallographically equivalent. The ionic ground state of the complex was determined on the basis of X-ray photoelectron spectroscopy, crystallographic data, as well as the vCN at 2184 and 2160 cm-1.