Zweikernige Rutheniumcluster mit μ2-η2-Sulfonatoliganden. Synthese und Molekuelstruktur von Ru2(CO)42-η2-OOS(O)Tol>2(PPh3)2

Article abstract of DOI:10.1016/0022-328X(92)83389-Y

Dodecacarbonyltriruthenium reacts with sulphonic acids to give dinuclear ruthenium complexes containing μ₂-η²-sulphonato bridges.The triphenylphosphine derivatives Ru2(CO)4<μ₂-η²-OOS(O)R>2(PPh3)2 (1: R = CF3; 2: R = Me; 3: R = Et; 4: R = (+)-Camph; 5: R = Ph; 6: R = Tol) have been isolated and characterized; the molecular structure of 6 has been established by a single-crystal X-ray structure analysis.Compound 6 crystallizes in two different space group: in the space group A2/n ( a 17.602(2), b 16.659(2), c 20.5234(2) Angstroem, β 106.57(1) deg, Z = 4) with crystallographic C₂ symmetry, and in the space group P2₁/n (a 17.566(1), b 15.539(1), c 37.889(4) Angstroem, β 93.84(1) deg, Z = 8 with two independent molecules (I and II) per asymmetric unit.The two ruthenium atoms are bridged by the two sulphonato ligands, the average Ru-Ru distances being 2.776(1) Angstroem for the three conformers.The CO groups are trans with respect to the bridging ligands, giving rise to a sawhorse-like structure.