A dimeric gold(I) triphospholyl complex

• Published in: Journal of organometallic chemistry Vol. 643; pp. 357 - 362
• Main Authors: Hofmann, M., Heinemann, F.W., Zenneck, U.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2002
• Subjects: Gold; Ligand; NMR spectra; Triphospholyl; Gold; NMR spectra; Ligand; Triphospholyl
• ISSN: 0022-328X; 1872-8561
• DOI: 10.1016/S0022-328X(01)01211-6

The reaction of 1-trimethylstannyl-3,5-di( tert-butyl)-1,2,4-triphosphol with PPh 3AuCl affords [(1,2,4-triphospholyl)Au(PPh 3)] ( 5) in high yield. NMR spectra of 5 are indicative for a highly dynamic compound in solution. The molecular structure of 5 in the solid state is that of the dimer [(1,2,4-triphospholyl)Au(PPh 3)] 2. Its most striking feature is a remarkable range of different metaltriphospholyl ligand bonds which create a pronounced asymmetric core of the molecule. The central AuAu distance of 3.14 Å indicates a weak interaction of the metal atoms. 1-Trimethylstannyl-3,5-di( tert-butyl)-1,2,4-triphosphol reacts with PPh 3AuCl to afford [(1,2,4-triphospholyl)Au(PPh 3)] in high yield. NMR spectra are indicative for a highly dynamic compound in solution. The molecular structure in the solid state is that of the dimer [(1,2,4-triphospholyl)Au(PPh 3)] 2. A remarkable range of different AuP bonds, a long AuAu distance, and a pronounced asymmetric core of the molecule are observed for the dimer.