title: The trans influence of the pyridine ligand on ruthenium(II)-porphyrin-carbene complexes.
abstract: In the two ruthenium(II)-porphyrin-carbene complexes (dibenzoylcarbenyl-kappaC)(pyridine-kappaN)(5,10,15,20-tetra-p-tolylporphyrinato-kappa(4)N)ruthenium(II), [Ru(C(15)H(10)O(2))(C(5)H(5)N)(C(48)H(36)N(4))], (I), and (pyridine-kappaN)(5,10,15,20-tetra-p-tolylporphyrinato-kappa(4)N)[bis(3-trifluoromethylphenyl)carbenyl-kappaC]ruthenium(II), [Ru(C(15)H(8)F(6))(C(5)H(5)N)(C(48)H(36)N(4))], (II), the pyridine ligand coordinates to the octahedral Ru atom trans with respect to the carbene ligand. The C(carbene)-Ru-N(pyridine) bonds in (I) coincide with a crystallographic twofold axis. The Ru-C bond lengths of 1.877 (8) and 1.868 (3) A in (I) and (II), respectively, are slightly longer than those of other ruthenium(II)-porphyrin-carbene complexes, owing to the trans influence of the pyridine ligands.
authors.affiliation: Department of Chemistry, School of Science, Kitasato University, Kitasato, Sagamihara, Kanagawa 228-8555, Japan.
authors.forename: Tomoko
authors.initials: T
authors.lastname: Harada
authors.forename: Satoko
authors.initials: S
authors.lastname: Wada
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Yuge
authors.forename: Takeshi Ken
authors.initials: TK
authors.lastname: Miyamoto