Rapid Dihydrogen Cleavage by Persistent Nitroxide Radicals under Frustrated Lewis Pair Conditions |
| |
| Authors: | Dr Xin Tao Dr Gerald Kehr Dr Xiaowu Wang Dr Constantin G Daniliuc Prof Stefan Grimme Prof Gerhard Erker |
| |
| Institution: | 1. Organisch-Chemisches Institut, Westf?lische Wilhelm-Universit?t Münster, Münster, Germany;2. Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universit?t Bonn, Bonn, Germany |
| |
| Abstract: | Persistent radicals undergo hydrogen atom abstraction reactions with a great variety of substrates, but not with dihydrogen. It has now been found that the TEMPO radical splits dihydrogen under mild conditions in the presence of the strong bulky B(C6F5)3 boron Lewis acid. The reaction is thought to proceed by a typical frustrated Lewis pair mechanism with the TEMPO radical acting as the active Lewis base. The reaction was analyzed by DFT, which indicates that no significant spin density on the hydrogen atoms is accumulated along the H2 splitting reaction path. |
| |
| Keywords: | boron dihydrogen splitting frustrated Lewis pair persistent radical radical reactions |
|
|
