PREPARATION AND STRUCTURE OF A RUTHENIUM DICARBONYL DERIVATIVE OF THEP2N4S2 RING

The reaction of Ru(CO)4(C2H4) or Ru(CO)5 with 1,5-Ph4P2N4S2 in CH2Cl2 / hexane at 23-degrees-C produces the dimer [Ru(CO)2(Ph4 P2N4S2)]2 (2) , which was shown by X-ray crystallography to have a centrosymmetric s tructure in which the P2N4S2 ring is attached to one ruthenium atom th rough two (geminal) nitrogen atoms and the remote sulfur atom and serv es as a bridge to the other ruthenium atom via the second sulfur atom. Crystals of 2.2(CH2Cl2) are triclinic, space group P1BAR (No. 2), a = 12.901(1) angstrom, b = 13.072(1) angstrom, c = 10.123(1) angstrom, a lpha = 100.88(1)-degrees, beta = 98.90(1)-degrees, gamma = 67.50(1)-de grees, V = 1542.4(3) angstrom 3, Z = 1 with final R and R(w) values of 0.040 and 0.027, respectively.