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)
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Creator |
MATHUR, P
GHOSE, S HOSSAIN, MM SATYANARAYANA, CVV MAHON, MF |
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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 |
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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.
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Publisher |
ELSEVIER SCIENCE SA LAUSANNE
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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 |
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Type |
Article
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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 |
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Language |
en
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