名称:
Structural Variations in Hexanuclear Ruthenium Clusters with Thioureato Ligands: Syntheses and Molecular Structures of [Ru6(CO)14(.mu.-CO)2(.mu.4-S)(.mu.3,.eta.2-SCNHPhNPh)(.mu.3,.eta.2-NPhCNHPh)] and [(.mu.-H)6Ru6(CO)14(.mu.3,.eta.2-SCNHPhNPh)2]
摘要:
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.