Molybdenum(V) and molybdenum(IV) coordination compounds from the reactions of MoCl5 with sulfones

The mononuclear complexes MoCl5L (L = 2,5-dihydrothiophene-1,1-dioxide), 1, and MoCl4L2 (L = dimethylsulfone, 2; diethylsulfone, 3; diphenylsulfone, 4) were obtained by the reactions of MoCl5 with the corresponding sulfones at room temperature in dichloromethane, and were characterized by analytical and magnetic data, and by X-ray crystallography in the cases of 1 and 2. The X-ray structure of 1 is the first one ever reported for an adduct of MoCl5 with a carbon-containing species. (C) 2015 Published by Elsevier Ltd.