Crystal structures of bis[2-(pyridin-2-yl) phenyl-kappa N-2, C-1] rhodium(III) complexes containing an acetonitrile or monodentate thyminate(1-) ligand

The crystal structures of bis[2-(pyridin-2-yl) phenyl] rhodium(III) complexes with the metal in an octahedral coordination containing chloride and acetonitrile ligands, namely (OC-6-42)-acetonitrilechloridobis[2-(pyridin-2-yl) phenyl-kappa(2) N, C-1] rhodium(III), [RhCl(C11H8N)(2)(CH3CN)] (1), thyminate(1-) and methanol, namely (OC-6-42)-methanol(5-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-ido-kappa N-1) bis[2-(pyridin-2-yl) phenyl-kappa(2) N, C-1] rhodium(III), [Rh(C11H8N)(2)(C5H5N2O2)(CH3OH)]center dot CH3OH center dot 0.5H(2)O (2), and thyminate(1-) and ethanol, namely (OC-6-42)-ethanol(5-methyl-2,4-dioxo1,2,3,4-tetrahydropyrimidin-1-ido-similar to N 1) bis[2-(pyridin-2-yl) phenyl-kappa(2) N, C-1] rhodium(III), [Rh(C11H8N)(2)(C5H5N2O2)(C2H5OH)]center dot C2H5OH (3), are reported. The acetonitrile complex, 1, is isostructural with the Ir III analog. In complexes 2 and 3, the monodeprotonated thyminate (Hthym(-)) ligand coordinates to the Rh-III atom through the N atom, and the resulting Rh-N(Hthym) bond lengths are relatively long [2.261 (2) and 2.252 (2)angstrom for 2 and 3, respectively] as compared to the Rh-N bonds in the related thyminate complexes. In each of the crystals of 2 and 3, the complexes are linked via a pair of intermolecular NH center dot center dot center dot O hydrogen bonds between neighbouring Hthym(-) ligands, forming an inversion dimer. A strong intramolecular O-H center dot center dot center dot O hydrogen bond between the thyminate(1-) and alcohol ligands in mutually cis positions to each other is also observed.