Triple bonds between molybdenum and tungsten atoms supported by selenolate ligands: M2(SeAr)6 and M2(OPri)2(SeAr)4(Ar = mesityl)
Abstract
The reactions between M2(NMe2)6 and mesityl (Ar) selenol (>6 equiv.) in toluene yield M2(SeAr)6 compounds as red-brown crystals while related reactions involving M2(OR)6 yield M2(SeAr)6 and M2(OR)2(SeAr)4 compounds which have been characterized by single-crystal X-ray crystallography and shown to contain a central (MM)6+ unit supported by selenolate ligands, M = Mo or W.