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Title: Reaction of CpW(CO)2(μ-PPh2)Mo(CO)5 and Fe2(μ-S2)(CO)6:  Unusual Fragmentation and Coordination of Fe2(μ-S2)(CO)6
Authors: Hossain, M. M
Lin, H.-M
Shyu, S.-G
Contributors: 國立臺灣海洋大學:生命科學暨生物科技學系
Date: 2004-07
Issue Date: 2018-10-08T03:11:37Z
Publisher: Organometallics
Abstract: Abstract: Reaction of Fe2(μ-S2)(CO)6 with 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)2Fe2(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.
Relation: 23(16) pp.3941-3949
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50415
Appears in Collections:[生命科學暨生物科技學系] 期刊論文

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