748185-13-9Relevant academic research and scientific papers
Reaction of CpV(CO)2(μ-PPh2)Mo(CO)5 and Fe2(μ-S2)(CO)6: Unusual fragmentation and coordination of Fe2(μ-S2)(CO)6
Hossain, Md. Munkir,Lin, Hsiu-Mei,Shyu, Shin-Guang
, p. 3941 - 3949 (2004)
Reaction of Fe2(μ-S2)(CO)6 with CpW(CO)2(μ-PPh2)Mo(CO)5 at dichloromethane reflux afforded heterotrimetallic clusters CpW(μ-PPh2)Mo(CO) 3(μ-CO)(μ3-S)2Fe2(CO) 5 (1), Cp(CO)W(μ-PPh2)Mo(CO) 3(μ3-S)2Fe(CO)3 (2), CpW(μ-PPh2)Mo(CO)3(μ3-S) 2Fe2(μ-CO)(CO)4 (3), and CpW(CO)(μ3-S)2Fe(μ-PPh2)Fe(CO) 4Mo(μ3-S)2Fe2(CO)6 (4). Thermolysis of 1 in dichloromethane produced 3, which was also obtained by the reaction of 2 with Fe2(CO)9 at dichloromethane reflux. Reflux of a benzene solution of 3 with norbornadiene (nbd) produced CpW(μ-PPh2)Mo(CO)(nbd)(μ3-S)2Fe 2(μ-CO)(CO)4 (5), but the typical reaction without nbd afforded a benzene substitution product, CpW(μ-PPh2) Mo(η6-C6H6)(μ3-S) 2Fe2(μ-CO)(CO)4 (6). Molecular structures of 1-6 were determined by single-crystal X-ray diffraction analyses. Cluster 1 has bitetrahedral geometry, where the Fe2MoW core is intercepted by an Fe-W bond to FeMoW and Fe2W units, and each unit is capped by a μ3-S atom. Cluster 2 is a rare example of square pyramidal geometry with the FeS2W plane capped by a Mo atom, whereas cluster 3 consists of an Fe2MoW tetrahedron core with each FeMoW face capped by a μ3-S atom. Clusters 4-6 possess an Fe2MoW core geometry similar to that of 3, where carbonyl ligands on the Mo site were replaced by Fe2(μ-S2)(CO)6, nbd, and benzene, respectively.
