Dipyridinium tetraisothiocyanatodioxotungstate(VI) and related compounds

Eight tetraisothiocyanatodioxotungstate(VI) salts with general formula, (BH)₂[WO₂(SCN)₄] (where B = pyridine, piperidine, quinoline, isoquinoline, 2-, 3-, and 4-picolines) are reported. These salts have been prepared by the reaction of sodium tungstate dihydrate with ammonium thiocyanate in the presence of HCl and isolated as pyridinium or related salts. The compounds have been characterized by elemental analysis, IR and electronic absorption spectra, conductance and magnetic susceptibility measurements, TGA/DTA, and molecular modelling studies The text was submitted by the authors in English.