Inorganic Chemistry, Vol.34, No.23, 5786-5790, 1995
Structural Variations in Hexanuclear Ruthenium Clusters with Thioureato Ligands - Syntheses and Molecular-Structures of (Ru-6(Co)(14)(Mu-Co)(2)(Mu(4)-S)(Mu(3),Eta(2)-Scnhphnph)(Mu(3),Eta(2)-Nphcnhph)) and ((Mu-H)(6)Ru-6(Co)(14)(Mu(3),Eta(2)-Scnhphnph)(2))
Under thermal conditions, the trinuclear ruthenium cluster [(mu-H)RU(3)(CO)(9)(mu(3),eta(2)-SCNHPhNPh)] (1) was found to undergo metal framework condensation to hexanuclear ruthenium clusters. The hexanuclear cluster [Ru-6(CO)(14)(mu(2)-CO)(2)(mu(4)-S)(mu(3),eta(2)-SCNHPhNPh)] (2), shown by X-ray crystallography to contain a hexagonal boat arrangement of the six metal atoms, was isolated along with the hexagonal sofalike cluster [(mu(2)H)Ru-6(CO)(16)(mu(5)-S)(mu(3),mu(2)-SCNHPhNPh)] (3), reported previously. Crystals of 2 are triclinic, space group P (1) over bar, with a = 12,141(3) Angstrom, b = 12.449(4) Angstrom, c = 19.712(6) Angstrom, alpha = 90.22(3)degrees, beta = 99.50(2)degrees, gamma = 111.61(2)degrees, and Z = 2. Compound 3 was found to take up molecular hydrogen under mild conditions to give [(mu(2)-H)(6)Ru(CO)(14)(mu(3),eta(2)-SCNHPhNPh)(2)] (4), the X-ray structure analysis of which reveals a hexagonal raft arrangement of the Ru-6 skeleton. Crystals of 4 are triclinic, space group P (1) over bar, with a 9.799(1) Angstrom, b = 12.594(2) Angstrom, c = 14.466(1) Angstrom, alpha = 112.45(1)degrees, beta = 92.71(1)degrees, gamma = 102.05(1)degrees, and Z = 1.