Synthesis and X-ray structural characterization of the triphenylphosphine derivative of the closo-dodecaborate anion, closo-[B12H11P(C6H5)3][N(n-C4H9)4] |
| |
| Authors: | R Bernard D Luneau J-P Scharff |
| |
| Institution: | a Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Université Claude Bernard-Lyon 1, 43 Bd du 11 novembre 1918, F-69622 Villeurbanne Cedex, France
b Laboratoire de Chimie de Coordination, Université Libanaise, Faculté des Sciences I, Hadath, P.O. Box 25/323, Ghobeyri, Beirut, Lebanon |
| |
| Abstract: | The reaction of a molar excess of closo-B12H11I]N(n-C4H9)4]2 (1) with tetrakis(triphenylphosphine)palladium (0), Pd(0)L4, yields to the formation of the title monoanionic compound, closo-1-B12H11P(C6H5)3]N(n-C4H9)4] (2). The structure of 2 was determined by X-ray diffraction analysis performed on a single crystal. The mechanism of formation of 2 is also discussed. We suggested a two-step mechanism for the formation of 2 consisting in a oxidative addition of the palladium complex followed by a reductive elimination involving P(C6H5)3 and assisted by Na2CO3. To our knowledge, this is the first example of monosubstitution of B12 with formation of boron-phosphorus bond. |
| |
| Keywords: | Dodecahydro-closo-dodecaborate Boron cluster Phosphine derivative Palladium catalysis |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
