title: Cyclometalated ruthenium chloro and nitrosyl complexes.
abstract: The novel cyclometalated Ru(III) complex, [Ru(eta(2)-phpy)(trpy)Cl][PF(6)].toluene 1, and the [Ru-NO](6) complex, [Ru(eta(2)-phpy)(trpy)NO][PF(6)](2) 2, where trpy is 2,2': 6',2''-terpyridine and phpy is 2-phenylpyridine, have been prepared and characterized by elemental analysis, IR, (1)H NMR, and electronic absorption spectroscopies, cyclic voltammetry, and crystallography. The crystal structure of 1 showed the chloride ion trans to the sigma-bonding phenyl group of phpy and is an unusual example of a stable paramagnetic cyclometalated complex. The crystal structure of 2 shows the nitrosyl ligand trans to the sigma-bonding phenyl group of phpy. The significant distortion of the normally linear Ru-NO bond angle (167.1(4) degrees) can be largely ascribed to the strong sigma-donor properties of the phenyl group.
authors.affiliation: Chemistry Department, Shahid Beheshti University, P.O. Box 19395, Tehran, Iran.
authors.forename: Hassan
authors.initials: H
authors.lastname: Hadadzadeh
authors.forename: Maria C
authors.initials: MC
authors.lastname: DeRosa
authors.forename: Glenn P A
authors.initials: GP
authors.lastname: Yap
authors.forename: Ali R
authors.initials: AR
authors.lastname: Rezvani
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Crutchley