Study of reactivity of p-cymene ruthenium(II) dimer towards diphenyl-2-pyridylphosphine: Synthesis, characterization and molecular structures of [(eta(6)-p-cymene)RuCl2(PPh2PY)] and [(eta(6)-p-cymene)RuCl(PPh2Py)]BF4

The reaction of [{(eta(6)-p-cymene)Ru(mu-Cl)}(2)Cl-2] with functionalized phosphine viz, diphenyl- 2-pyridylphosphine yielded complexes of the type: (a) P-bonded complex [(eta(6)-p-Cymene)RiCl(2)(PPh2PY)] (1), (b) P-, N-chelated complex [(eta(6)-p-cymene)RuCl-(PPh2Py)]BF4 (2) and [RuCl2(PPh2PY)(2)] (3) resulting from the displacement of the p-cymene ligand. These complexes were characterized by H-1 NMR, P-31 NMR and analytical data. The structures of complexes 1 and 2 have been confirmed by single crystal X-ray diffraction study. Complex 1 crystallised in triclinic space group P 1 with a = 10.9403 (3) Angstrom, b = 13.3108 (3) Angstrom, c = 10.5394 (10) Angstrom, alpha = 88.943 (2)degrees, beta = 177.193 (2)degrees, gamma = 113.1680 (10)degrees, Z = 2 and V = 1230.39 (5) Angstrom(3). The complex 2 crystallises in monoclinic space group P2(1) with a = 9-1738 (4) Angstrom, b = 14.0650 (6) Angstrom, c 10.7453 (5) Angstrom, beta = 106.809 (1)degrees, Z = 2 and V = 1327.22 (10) Angstrom(3).