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 C[1]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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