Henderson, W., Nicholson, B.K. & Wilkins, A.L. (2005). Facile syntheses of four-membered aurathietane dioxide [Au–CHR-SO₂-CHR] ring systems, and the first isonitrile insertion reaction into a gold(III)–carbon bond . Journal of Organometallic Chemistry, 690(21-22), 4971-77.
Permanent Research Commons link: http://hdl.handle.net/10289/204
The reactions of [Pt₂(μ-S)₂(PPh₃)₄] with excess PbBr₂ or PbI₂ in methanolic suspension result in the formation of the neutral lead(II) halide adducts [Pt₂(μ-S)₂(PPh₃)₄PbX₂] (X = Br, I). The X-ray structure determination of the lead iodide adduct reveals an essentially tetrahedral lead(II) centre, which is a rare coordination geometry for lead(II), which almost invariably is hemidirected, with a stereochemically active lone pair. In contrast, the structure of the PbBr₂ adduct, although suffering from some disorder, shows a more typical, distorted arrangement of ligands; these results are discussed in terms of the tendency for soft, bulky ligands to promote symmetric, holodirected geometries. The ESI mass spectra of the adducts are reported, and yield [M−halide]⁺ ions.
This article is published in the Journal of Organometallic Chemistry, (c) 2005 Elsevier B.V.