title: 1,3,5-Tris(thiocyanatomethyl)mesitylene as a ligand. Pseudooctahedral molybdenum, manganese, and rhenium carbonyl complexes and copper and silver dimers. copper-catalyzed carbene- and nitrene-transfer reactions.
abstract: New molybdenum(0), molybdenum(II), manganese(I), rhenium(I), silver(I), and copper(I) complexes with the 1,3,5-tris(thiocyanatomethyl)mesitylene [Ms(CH(2)SCN)(3)] ligand have been synthesized and characterized by IR, NMR, and by X-ray diffraction (except for the rhenium complex). The Ms(CH(2)SCN)(3) ligand coordinated with the molybdenum, manganese, and rhenium carbonyl fragments as a tripodal chelate. With copper and silver, dimeric dicationic species were obtained instead, with the Ms(CH(2)SCN)(3) ligand acting simultaneously as a bidentate chelate and bridge. The [{Cu(Ms(CH(2)SCN)(3))}(2)][BAr'(4)](2) (BAr'(4) = tetra(3,5-bis(trifluoromethyl)phenyl)borate) product is an excellent catalyst for cyclopropanation and aziridination of alkenes and cyclopropenation of alkynes by means of carbene- and nitrene-transfer reactions.
authors.affiliation: Departamento de Química Orgánica e Inorgánica-IUQOEM, Facultad de Química, Universidad de Oviedo-CSIC, 33006 Oviedo, Spain.
authors.forename: Héctor
authors.initials: H
authors.lastname: Martínez-García
authors.forename: Dolores
authors.initials: D
authors.lastname: Morales
authors.forename: Julio
authors.initials: J
authors.lastname: Pérez
authors.forename: Marcos
authors.initials: M
authors.lastname: Puerto
authors.forename: Daniel
authors.initials: D
authors.lastname: Miguel