om0202322_si_001.pdf (653.18 kB)
Chemistry of In(C5H5)3 and Some Heteroleptic Organoindium(III) Derivatives. Crystal and Molecular Structures of In(C5H5)3, (C5H5)3In·PPh3, and (Me3CCH2)2In(C5H5)
journal contribution
posted on 2002-09-27, 00:00 authored by O. T. Beachley,, David J. MacRae, Yuegang Zhang, Xue LiPure In(C5H5)3 has been prepared in high yields from InCl3 and Li(C5H5) in THF solution
with the absence of external heating. Neat In(C5H5)3 readily decomposes at 150 °C to form
In(C5H5)(s) and cyclopentadiene as the primary products whereas a benzene suspension
decomposes under refluxing conditions. In(C5H5)3 forms an isolable 1:1 adduct with PPh3
but NMe3, THF, and Et2O do not form stable adducts. Ligand redistribution reactions with
InR3 (R = Me and CH2CMe3) in THF solution provided R2In(C5H5) and RIn(C5H5)2. These
heteroleptic organoindium(III) compounds have been isolated as analytically pure crystalline
solids, but in THF solution they form equilibrium mixtures of the adducts of InR3, R2In(C5H5), RIn(C5H5)2, and In(C5H5)3, as appropriate. Crystals of [In(C5H5)3]n, (C5H5)3In·PPh3,
and [(Me3CCH2)2In(C5H5)]n were characterized by single-crystal X-ray structural studies.