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Aggregation and Degradation of White Phosphorus Mediated by N-Heterocyclic Carbene Nickel(0) Complexes.

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(?6 -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.

SUBMITTER: Hierlmeier G

PROVIDER: S-EPMC7496536 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Aggregation and Degradation of White Phosphorus Mediated by N-Heterocyclic Carbene Nickel(0) Complexes.

Hierlmeier Gabriele G Coburger Peter P van Leest Nicolaas P NP de Bruin Bas B Wolf Robert R

Angewandte Chemie (International ed. in English) 20200603 33

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 ...[more]

PMID: 32348622

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