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Mixed-chalcogenide, mixed-metal carbonyl clusters. Synthesis and characterization of Cp(2)Mo(2)Fe(2)(mu(4)-Te)(mu(3)-E')(CO)(6) (E,E'=Te; E=S,E'=Te; E,E'=S; E=S, E'=Se), Cp(2)Mo(2)Fe(2)(mu(3)-Te)(mu(3)-E)(CO)(7), and Cp(2)Mo(2)Fe(mu(3)-E)(CO)7 (E=S, TE)

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Title Mixed-chalcogenide, mixed-metal carbonyl clusters. Synthesis and characterization of Cp(2)Mo(2)Fe(2)(mu(4)-Te)(mu(3)-E')(CO)(6) (E,E'=Te; E=S,E'=Te; E,E'=S; E=S, E'=Se), Cp(2)Mo(2)Fe(2)(mu(3)-Te)(mu(3)-E)(CO)(7), and Cp(2)Mo(2)Fe(mu(3)-E)(CO)7 (E=S, TE)
 
Creator MATHUR, P
HOSSAIN, MM
UMBARKAR, SB
SATYANARAYANA, CVV
RHEINGOLD, AL
LIABLESANDS, LM
YAP, GPA
 
Subject coordination chemistry
structural characterization
crystal-structure
ligands
complexes
se
fe3(mu-3-te)2(co)9
organosulfur
construction
reactivity
 
Description Reflux of a benzene solution of Fe3STe(CO)(9) and Cp(2)Mo(2)(CO)(6) yielded the new cluster Cp(2)Mo(2)Fe(2)STe(CO)(7) (6) as the major product and the following clusters in smaller amounts: Cp(2)Mo(2)Fe(2)Te(3)(CO)(6) (1), Cp(2)Mo(2)Fe(2)STe(2)(CO)(6) (2), Cp(2)Mo(2)Fe(2)S(2)Te(CO)(6) (3), Cp(2)-Mo2FeTe(CO)(7) (4), Cp(2)Mo(2)FeS(CO)(7) (5), and Cp(2)Mo(2)Fe(2)Te(2)(CO)(7) (7). The new cluster 3 was formed in good yield when a benzene solution of 6 was refluxed with sulfur powder. Similarly, 2 was obtained when a benzene solution of 6 was refluxed with tellurium powder. A new cluster with three different chalcogen ligands, Cp(2)Mo(2)Fe(2)SSeTe(CO)(6) (8), was obtained when a benzene solution of 6 was refluxed in the presence of selenium powder. Structures of 1-4, 6, and 8 were established by crystallographic methods. The structures of 1-3 and 8 consist of Mo2Fe2 butterfly cores with a mu(4)-Te atom and two mu(3)-chalcogen atoms (1, Te and Te; 2, S and Te; 3, S and S; 8, S and Se) capping the two Mo2Fe faces. Each Mo atom has a Cp ligand, and each Fe atom has three terminally bonded carbonyl groups. The structure of 4 conists of a Mo2FeTe tetrahedron with each Mo possessing a Cp ligand and two terminally bonded carbonyl groups and the Fe atom having three terminal carbonyl groups attached to it. The structure of 6 consists of a Mo2Fe2 tetrahedron. One Mo2Fe face is capped by a mu(3)-S ligand and the other by a mu(3)-Te atom. The Fe-Fe bond is bridged by a carbonyl group; there are two terminally bonded carbonyl groups attached to each Fe atom. A semitriply bridging earbonyl group is attached to one Mo atom. The other Mo atom has one terminal carbonyl group. Each Mo atom has one Cp ligand attached to it.
 
Publisher AMER CHEMICAL SOC
 
Date 2011-07-14T12:19:55Z
2011-12-26T12:48:22Z
2011-12-27T05:35:04Z
2011-07-14T12:19:55Z
2011-12-26T12:48:22Z
2011-12-27T05:35:04Z
1996
 
Type Article
 
Identifier ORGANOMETALLICS, 15(7), 1898-1904
0276-7333
http://dx.doi.org/10.1021/om950876s
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3950
http://hdl.handle.net/10054/3950
 
Language en