Zhengfang Tian

Synthesis, crystal structure and magnetic properties of [1-(4′-bromobenzyl)-4-methylquinolinium] [Ni(mnt)2] complex (mnt2 − =maleonitriledithiolate)

A new ion-pair complex, [BrBzMeQl][Ni(mnt)2] (1) ([BrBzMeQl]+ = 1-(4′-bromobenzyl)-2-methylquinolinium; mnt2− = maleonitriledithiolate), has been prepared and characterized. X-ray diffraction analysis shows that the Ni(mnt)2 anion and [BrBzMeQl]+ cations of 1 form completely segregated stacking columns, with the Ni ··· Ni distances alternating between 3.717 and 4.466 Å in the Ni(mnt)2 stacking column. The variable-temperature magnetic susceptibilities of 1 have been measured over the range 75–300 K and the results reveal that the complex exhibits antiferromagnetic behavior.

Bis­[1-(3-cyano­benzyl)-3-methyl­pyrazinium] bis(1,2-di­cyano­ethene-1,2-di­thiol­ato)­nickel(II)

In the title complex, (C13H12N3)2[Ni(C4N2S2)2], the anion has slightly disorted square-planar coordination geometry, in which the Ni atom lies on an inversion center. In the crystal structure, weak C—H⋯N interactions connect anions and cations into a three-dimensional network.