SYNTHESIS AND MOLECULAR STRUCTURE OF SOLVATED HYDRIDE COMPLEXES OF ALUMINIUM AND DI-η5-CYCLOPENTADIENYLYTTRIUM

Article abstract of DOI:10.1016/0022-328X(84)80065-0

A series of hydride complexes of di-η⁵-cyclopentadienyl-yttrium and -aluminium solvated by a Lewis base, viz.Cp2YAlH4NEt3 (I), Cp2YAlH4THF (II), Cp2YAlH4OEt2 (III) and (Cp2YAlH4)2OEt2 (IV), (Cp = η⁵-cyclopentadienyl) was synthesized.An X-ray study of compounds I and IV was performed, yielding the coordinates of the heavy atoms.The positions of the hydrogen atoms were determined accordingly from the IR data and also by comparison with the analogous hydridohalide complexes (Cp2YCl)2AlH3L.The structures of I and IV may be represented by the following formulae:<(η⁵-C5H5)2Y(μ₃-H)>2<(μ₂-H)AlH2NEt3>2 (I) and <<(η⁵-C5H5)2Y>2(μ₃-H)><(μ₂-H)2AlH2><(μ₂-H)2AlHOEt2> (IV).