Dehydrogenative coupling of 2,2′-bipyridine: hydrothermal synthesis and crystal structure of a novel polyoxovanadate decorated with the 2,2′;6′,2″;6″,2′′′-quaterpyridine ligand

A novel polyoxovanadate [{Ni(quaterpy)(H2O)}2V4O12] · 10H2O (1) (quaterpy =2,2′;6′,2″;6″,2′′′-quaterpyridine) has been hydrothermally synthesized and structurally characterized. The title compound consists of tetranuclear V4O12 4− clusters grafted with [Ni(quaterpy)(H2O)]2+ complex. Compound 1 represents the first polyoxometalate decorated with quaterpy ligand.