Ion pair symmetrization in metallocenium cations partnered with diborane derived borate counteranions |
| |
| Authors: | Lee D Henderson |
| |
| Institution: | Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4 |
| |
| Abstract: | The thermodynamics of ion pair symmetrization in a series of metallocenium species generated from  were studied using a variety of solution dynamic techniques including line broadening, 2D-EXSY, and 1D-DPFGSE-NOE. Ion pairs were generated by methide abstraction using the corresponding trityl salts 1-A] to yield  (A = {C6F4-1,2-B(C6F5)2]2(μ-O(C6F5))}−, 2-O(C6F5); {C6F4-1,2-B(C6F5)2]2(μ-OPh)}−, 2-OPh; {C6F4-1,2-B(C6F5)2]2(μ-OMe)}−, 2-OMe; and B(C6F5)4]−, 2-B(C6F5)4). The observed activation parameters were interpreted on the basis of a solvent-assisted mechanism of ion pair symmetrization. |
| |
| Keywords: | Metallocenes Ion pair symmetrization Weakly coordinating anions Fluoroarylborates |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
