title: Facile synthesis of phosphaamidines and phosphaamidinates using nitrilium ions as an imine synthon.
abstract: Readily accessible nitrilium triflates are convenient imine building blocks for the expedient synthesis of a novel class of 1,3-P,N ligands as demonstrated for the reaction with primary phosphanes. This procedure allows variation of all substituents. X-ray crystal structures are reported for nitrilium ions, phosphaamidines, and three phosphaamidinate complexes. The lithium phosphaamidinate is N coordinated and its reaction with [AuCl(tht)] (tht = tetrahydrothiophene) gives a unique P-bridged gold trimer, while a P,N-bidentate complex results from [{RhCl(cod)}2]. The nitrilium ion methodology allows extension of the 1,3-P,N motive to bis(imino)phosphanes, which are the neutral phosphorus analogues of the valuable β-diketiminate ligand.
authors: Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands).
authors: Tom
authors: T
authors: van Dijk
authors: Sebastian
authors: S
authors: Burck
authors: Mark K
authors: MK
authors: Rong
authors: Amos J
authors: AJ
authors: Rosenthal
authors: Martin
authors: M
authors: Nieger
authors: J Chris
authors: JC
authors: Slootweg
authors: Koop
authors: K
authors: Lammertsma
keywords: N,P ligands; cations; density functional calculations; ligand design; synthetic methods