SYNTHESIS, CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES OF [l-(2',4'-DICHLOROBENZYL)-3-METHYLPYRIDINIUMI [Ni(mnt)_2] COMPLEX (mnt~(2-) = MALEONITRILEDITHIOLATE)

摘要

A new ion-pair complex, [DiClBzMePy][M(mnt)_2] (1) ([DiClBzMePy]~+ = 1 -(2'4'-dichlorobenzyl)-3-methyl-pyridinium; mnt~(2-) = maleonitriledithiolate), has been prepared. The Ni(mnt)~-_2 anion and [DiClBzMePy]~+ cations of Complex 1 stack into well-segregated columns in the solid state, and the Ni(III) ions form a ID zigzag chain within a Ni(mnt)~-_2 anion through Ni centre dot centre dot centre dot S, S centre dot centre dot centre dot S and Ni centre dot centre dot centre dot S centre dot centre dot centre dot Ni interactions. The anion-anion, anion-cation and cation-cation contacts may play important roles in the crystal packing. Variable temperature magnetic' susceptibilities measured at 75-300 K reveal that Complex 1 exhibits antiferromagnetic behavior.