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Thermolysis of Fe-3(CO)(9)(mu(3)-Se)(mu(3)-E) (E = S, Te) with Cp2Mo2(CO)(6) and formation of new mixed-chalcogenide, mixed Fe-Mo carbonyl clusters. Crystal structures of Cp2Mo2Fe2(CO)(6)(mu(3)-Se)(2)(mu(4)-Te), Cp2Mo2Fe2(CO)(7)(mu(3)-Se)(mu(3)-Te) and Cp2Mo2Fe2(CO)(6)(mu(3)-S)(mu(3)-Se)(mu(4)-Se)

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Title Thermolysis of Fe-3(CO)(9)(mu(3)-Se)(mu(3)-E) (E = S, Te) with Cp2Mo2(CO)(6) and formation of new mixed-chalcogenide, mixed Fe-Mo carbonyl clusters. Crystal structures of Cp2Mo2Fe2(CO)(6)(mu(3)-Se)(2)(mu(4)-Te), Cp2Mo2Fe2(CO)(7)(mu(3)-Se)(mu(3)-Te) and Cp2Mo2Fe2(CO)(6)(mu(3)-S)(mu(3)-Se)(mu(4)-Se)
 
Creator MATHUR, P
GHOSE, S
HOSSAIN, MM
SATYANARAYANA, CVV
MAHON, MF
 
Subject selenium-bridged clusters
multiple bonds
main group
reactivity
chemistry
complexes
fe3(mu-3-te)2(co)9
conversion
tellurium
clusters
iron
molybdenum
sulphur
selenium
tellurium
 
Description The thermolytic reaction of Fe-3(CO)(9)(mu(3)-Se)(mu(3)-Te) with Cp2Mo2(CO)(6) in benzene yielded the new mixed-metal, mixed trichalcogenide clusters Cp2Mo2Fe2(CO)(6)(mu(3)-Se)(mu(3)-Te)(mu(4)-Te) (2a), Cp2Mo2Fe2(CO)(6)(mu(3)-Te)(2)(mu(4)-Se) (2b) and Cp2Mo2Fe2(CO)(6)(mu(3)-Se)(2)(mu(4)-Te) (3a), Cp2Mo2Fe2(CO)(6)(mu(3)-Se)(mu(3)-Te)(mu(4)-Se) (3b) as well as the dichalcogenide cluster Cp2Mo2Fe2(CO)(7)(mu(3)-Se)(mu(3)-Te) (8). Similarly, the thermolysis of Fe-3(CO)(9)(mu(3)-S)(mu(3)-Se) with Cp2Mo2(CO)(6) in benzene afforded the new mixed-metal, mixed trichalcogenide clusters Cp2Mo2Fe2(CO)(6)(mu(3)-S)(2)(mu(4)-Se) (10), Cp2Mo2Fe2(CO)(6)(mu(3)-S)(mu(3)-Se)(mu(4)-Se) (11) and the dichalcogenide cluster Cp2Mo2Fe2(CO)(7)(mu(3)-S)(mu(3)-Se) (13). In the case of 10 and 11, formation of isomers containing the sulphido in the mu(4)-site was not observed. Compounds 2a and 2b could also be obtained when Cp2Mo2Fe2(CO)(6)(mu(3)-Te)(2) was refluxed with selenium powder in benzene. Similarly, refluxing of benzene solutions containing selenium powder and Cp2Mo2Fe2(CO)(6)(mu(3)-Se)(mu(3)-Te) formed 3a and 3b, and sulphur powder with Cp2Mo2Fe2(CO)(6)(mu(3)-S)(mu(3)-Se) or Cp2Mo2Fe2(CO)(6)(mu(3)-Se)(2) yielded the compounds 10 and 11 respectively. The new clusters have been characterised by IR and by H-1, C-13, Se-77 and Te-125 NMR spectroscopy. Clusters 3a, 8 and 11 have also been structurally characterised by single-crystal X-ray diffraction methods. (C) 1997 Elsevier Science S.A.
 
Publisher ELSEVIER SCIENCE SA LAUSANNE
 
Date 2011-07-29T17:39:48Z
2011-12-26T12:48:49Z
2011-12-27T05:55:07Z
2011-07-29T17:39:48Z
2011-12-26T12:48:49Z
2011-12-27T05:55:07Z
1997
 
Type Article
 
Identifier JOURNAL OF ORGANOMETALLIC CHEMISTRY, 543(1-2), 189-199
0022-328X
http://dx.doi.org/10.1016/S0022-328X(97)00195-2
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7777
http://hdl.handle.net/10054/7777
 
Language en