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Terminal tungsten pnictide complex formation through pnictaethynolate decarbonylation

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Abstract

Tungsten(IV) tetrakis(2,6-diisopropylphenoxide) (1) has been demonstrated to be a competent platform for decarbonylative formation of anionic terminal pnictide complexes upon treatment with pnictaethynolate anions: cyanate, 2-phosphaethynolate, and 2-arsaethynolate. These transformations constitute the first examples of terminal phosphide and arsenide complex formation at a transition metal center from OCP and OCAs, respectively. The phosphide and arsenide complexes are also the first to be isolated in a tetragonal, all-oxygen ligand environment. The scalar NMR coupling constants between tungsten-183 and nitrogen-15 or phosphorus-31 have been measured and contextualized using natural bond orbital (NBO) methods in terms of s orbital character in the σ bonding orbital and pnictide lone pair.

Graphical abstract: Terminal tungsten pnictide complex formation through pnictaethynolate decarbonylation

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Publication details

The article was received on 31 Aug 2017, accepted on 09 Sep 2017 and first published on 14 Sep 2017


Article type: Communication
DOI: 10.1039/C7CC06841G
Citation: Chem. Commun., 2017, Advance Article
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    Terminal tungsten pnictide complex formation through pnictaethynolate decarbonylation

    M. Joost, W. J. Transue and C. C. Cummins, Chem. Commun., 2017, Advance Article , DOI: 10.1039/C7CC06841G

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