Synthesis, crystal structure and magnetic property of bis(tetra-n-butylammonium) bis(4,5-dicyanobenzene-1,2-dithiolato) oxovanadium complex

The bis(dithiolene) oxovanadium complex, namely (n-Bu4N)2[(dcbdt)2VO] (dcbdt = 4,5-dicyanobenzene-1,2-dithiolato), was unprecedentedly obtained from the reaction of Na2dcbdt and vanadium trichloride. An X-ray structure analysis indicated that [(dcbdt)2VO] moieties are surrounded by n-Bu4N cations and there was no direct interaction among these moieties. Although there was no direct interaction among them, several S⋯H, C⋯H and N⋯H van der Waals contacts between n-Bu4N cations and [(dcbdt)2VO] moieties were observed. The ESR and SQUID measurement showed that the vanadium atom is in the state of V(IV) (S = 1/2) and these magnetic moments interact with each other very weakly antiferromagnetically (θ = -0.371 K).

(n-Bu4N)2[(dcbdt)2VO] (dcbdt = 4,5-dicyanobenzene-1,2-dithiolato), was obtained from the reaction of Na2dcbdt and vanadium trichloride. The ESR and SQUID measurement showed that the vanadium atom is in the state of V(IV) (S = 1/2) and these magnetic moments interact with each other very weakly antiferromagnetically (θ = −0.371 K).Figure optionsDownload as PowerPoint slide