title: Access to the first (iminophosphoranyl)(selenophosphoranyl)methane ligands Ph2P(=Se)CH2P(=NR)Ph2: coordination of their methanide and methandiide anions to ruthenium.
abstract: A family of mixed (iminophosphoranyl)(selenophosphoranyl)methane ligands of general composition Ph(2)P(=Se)CH(2)P(=NR)Ph(2) have been synthesized by oxidation of Ph(2)PCH(2)P(=NR)Ph(2) with elemental selenium. In the presence of Et(3)N, these ligands react with [{RuCl(mu-Cl)(eta(6)-p-cymene)}(2)] to afford mononuclear Ru(II) species in which the resulting methanide anions adopt a tridentate coordination. Further deprotonation with KH generates carbenic ruthenium derivatives which participate, under remarkably mild conditions, in C-C coupling processes with isocyanides.
authors.affiliation: Departamento de Química Orgánica e Inorgánica, Instituto Universitario de Química Organometálica Enrique Moles (Unidad Asociada al CSIC), Facultad de Química, Universidad de Oviedo, E-33071 Oviedo, Spain. vcm@uniovi.es
authors.forename: Victorio
authors.initials: V
authors.lastname: Cadierno
authors.forename: Josefina
authors.initials: J
authors.lastname: Díez
authors.forename: Joaquín
authors.initials: J
authors.lastname: García-Alvarez
authors.forename: José
authors.initials: J
authors.lastname: Gimeno