The trans influence of the pyridine ligand on ruthenium(II)-porphyrin-carbene complexes.
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.
Harada
Tomoko
T
Department of Chemistry, School of Science, Kitasato University, Kitasato, Sagamihara, Kanagawa 228-8555, Japan.
Wada
Satoko
S
Yuge
Hidetaka
H
Miyamoto
Takeshi Ken
TK