一种瞬态次膦基镧配合物。
A transient lanthanum phosphinidene complex.
作者信息
Watt Fabian A, McCabe Karl N, Schoch Roland, Maron Laurent, Hohloch Stephan
机构信息
Paderborn University, Warburger Straße 100, 33098 Paderborn, Germany.
出版信息
Chem Commun (Camb). 2020 Dec 21;56(98):15410-15413. doi: 10.1039/d0cc06670b. Epub 2020 Nov 25.
Deprotonation of the terminal phosphido complex (PN)La(PHMes) (1) results in the C-H-activation of one of the PN ligands, formally retaining the PHMes group. The reaction mechanism and the possible involvement of the transient phosphinidene complex 2 are investigated by theoretical and chemical means including a deuteration experiment employing (PN)La(PDMes) (1-d). Furthermore, the thermal stability of product [K(2.2.2-cryptand)][(PN)(PN)La(PHMes)] (3b) is examined, giving the diphosphido complex [K(2.2.2-cryptand)][(PN)La(PMes)] (6).
末端磷化物配合物(PN)La(PHMes) (1)的去质子化导致其中一个PN配体发生C-H活化，形式上保留了PHMes基团。通过理论和化学方法，包括使用(PN)La(PDMes) (1-d)的氘代实验，研究了反应机理以及瞬态磷烯配合物2可能的参与情况。此外，还研究了产物[K(2.2.2-穴醚)][(PN)(PN)La(PHMes)] (3b)的热稳定性，得到了二磷化物配合物[K(2.2.2-穴醚)][(PN)La(PMes)] (6)。
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