Kaska, W.C., Mayer, H. A., Elsegood, M.R.J., Horton, P.N., Hursthouse, M.B., Redshaw, C. and Humphrey, S.M. (2004) {(H3C)(3)NB(H)(2)NC}(2)Au AuI2 : a linear chain polymer of gold(I) iodide with an unusual isocyanoborane ligand showing aurophilic behaviour. Acta Crystallographica Section E: Crystallographic Communications, 60 (5), M563-M565. (doi:10.1107/S1600536804008098).
Abstract
Treatment of the (isocyanoborane) gold(I) chloride adduct [LAuCl] [L = (H3C)(3)NB(H)(2)NC] with KI at room temperature yields the unusal title compound, bis[isocyano(trimethylamino) borane] gold(I) diiodoaurate(I), [Au(C4H11BN2)(2)][ AuI2], which forms via an in situ rearrangement of isocyanoborane and halide ligands. The structure consists of alternating [L2Au](+) and [AuI2](-) ions, which form an infinite linear one-dimensional chain due to aurophilic Au...Au interactions. Both Au atoms occupy inversion centres.
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