|
|||||
|
|
Use of the Cationic Fragments [Ru(η5-C5H5) (MeCN)3]+ and [M(η6-C6H5R)(MeCN)3]+ (M=Os, Ru; R=H, Me) as Ionic Coupling Reagents in the Synthesis of the Clusters [Os4M2(CO)12(η6-C6H5R)], [Os4M(CO)12(η6-C6H6)(Au2dppm)] and [Os5Ru(CO)15(η5-C5H5)(AuPPh3)]* |
|
| Authors: | Muna R A Al-Mandhary Radchada Buntem Cheryl L Doherty Andrew J Edwards John F Gallagher Jack Lewis Chi-Keung Li Paul R Raithby M Carmen Ramirez de Arellano Gregory P Shields |
| Institution: | 1. Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK 2. Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK 3. CCLRC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, UK |
| Abstract: | The clusters H2Os4M(CO)12eta6-C6H6)] (M=Os, Ru) may be deprotonated to generate anions Os4M(CO)12eta6-C6H6)]2- which react with M′eta6-C6H5R) (MeCN)3]2+(M′=Os, Ru; R=H, Me) to give the bicapped tetrahedral clusters Os4(CO)12MM′eta6-C6H5R)2]. Whereas Os4(CO)12M2eta6-C6H6)2] (M=Os, Ru) have one Meta6-C6H6) unit in a site connected to three other metals, {3}, and one in a site connected to four other metals, {4}, Os4(CO)12OsRueta6-C6H6)2] has the Rueta6-C6H6) unit in the {3} site irrespective of whether the Os or Ru anion is capped. Coupling of these anions with Au2dppm yields Os4M(CO)12eta6-C6H6)(Au2dppm)] (M=Os, Ru), which have the arene ligand in the axial site of a trigonal bipyramid and the digold unit capping two faces. Reduction of H2Os5(CO)15] with K/Ph2CO and coupling with Rueta5-C5H5)(MeCN)3]2+yields the monoanion Os5(CO)15Rueta5-C5H5)]? which reacts with AuPPh3]+ generating Os5(CO)15Rueta5-C5H5)(AuPPh3)] with the “Ru(C5H5)” unit in the terminal {3} site. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |