Facile Synthesis of Phosphaamidines and Phosphaamidinates using Nitrilium Ions as an Imine Synthon |
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| Authors: | Tom van?Dijk Dr Sebastian Burck Mark K Rong Amos J Rosenthal Dr Martin Nieger Dr J Chris Slootweg Prof?Dr Koop Lammertsma |
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| Institution: | 1. Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands);2. Laboratory of Inorganic Chemistry, Department of Chemistry, University of Helsinki, 00014 Helsinki (Finland) |
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| 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. |
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| Keywords: | cations density functional calculations ligand design N P ligands synthetic methods |
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