Syntheses and structures of two arene-ruthenium(II) complexes with cyclometalating 2-pyridyl-m-tolyl ligands

Reactions of [(eta(6) -C6Me6)RuCl2](2) and [(eta(6)-p-eymene)RuCl2](2) with [Hg(ptpy)(2)] (Hptpy = 2-pyridyl-m-toluene) in THF afforded [{(eta 6 -C6Me6)Ru(ptpy)}(2)(mu-Hg2Cl6)] 1 and [(eta(6)-p-cymene)Ru(ptpy)(HgCl3)] 2, respectively. The crystal structures of complexes 1 and 2 have been determined by single-crystal X-ray diffraction. The ruthenium atom in both molecules I and 2 adopts a pseudo octahedral configuration containing a cyclometalated ptpy ligand. The Ru-C(ptpy) and Ru-N bond lengths in 1 are 2.049(3)and 2.089(2) angstrom, respectively. The corresponding bond lengths for 2 are 2.025(9) and 2.089(7) angstrom