Donor-Stabilized Monocarba-Bridged Bis(cyclopentadienyl)alanes |
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Authors: | Wasim Haider Dr Volker Huch Dr Bernd Morgenstern Dr André Schäfer |
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Institution: | Faculty of Natural Sciences and Technology, Department of Chemistry, Saarland University, 66123 Saarbrücken, Saarland, Federal Republic of Germany |
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Abstract: | Five monocarba-bridged bis(cyclopentadienyl)aluminum halide NHC and thione complexes and one monocarba-bridged bis(cyclopentadienyl)phosphanylalane NHC complex are reported. The former were synthesized by transmetalation of a C1]magnesocenophane with the corresponding aluminum(III) chloride and aluminum(III) bromide donor adducts. The phosphanylalane complex was obtained by a subsequent functionalization of the corresponding bromoalane with lithium diphenylphosphide. All complexes were characterized in solution by multinuclear NMR spectroscopy and in the solid state by single crystal X-ray diffraction. Bonding energies of the NHC and thione ligands to the aluminum centres were estimated by DFT calculations. |
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Keywords: | aluminum cyclopentadienylalanes phosphanylalanes NHCs metallocenophanes |
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