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Updated: Dec 23, 2025
Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus
Published on: October 3, 2014
Aggregation and Degradation of White Phosphorus Mediated by N-Heterocyclic Carbene Nickel(0) Complexes
Gabriele Hierlmeier1, Peter Coburger1, Nicolaas P van Leest2
1Universität Regensburg, Institut für Anorganische Chemie, 93040, Regensburg, Germany.
Abstract:
The reaction of zerovalent nickel compounds with white phosphorus (P4 ) is a barely explored route to binary nickel phosphide clusters. Here, we show that coordinatively and electronically unsaturated N-heterocyclic carbene (NHC) nickel(0) complexes afford unusual cluster compounds with P1 , P3 , P5 and P8 units. Using [Ni(IMes)2 ] [IMes=1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene], electron-deficient Ni3 P4 and Ni3 P6 clusters have been isolated, which can be described as superhypercloso and hypercloso clusters according to the Wade-Mingos rules. Use of the bulkier NHC complexes [Ni(IPr)2 ] or [(IPr)Ni(η6 -toluene)] [IPr=1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene] affords a closo-Ni3 P8 cluster. Inverse-sandwich complexes [(NHC)2 Ni2 P5 ] (NHC=IMes, IPr) with an aromatic cyclo-P5 - ligand were identified as additional products.
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