Homolytic H2 cleavage by a mercury-bridged Ni(I) pincer complex [{(PNP)Ni}2{μ-Hg}]

Markus Kreye; Matthias Freytag; Peter G. Jones; Paul G. Williard; Wesley H. Bernskoetter; Marc D. Walter

doi:10.1039/C4CC09743B

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Homolytic H₂ cleavage by a mercury-bridged Ni(i) pincer complex [{(PNP)Ni}₂{μ-Hg}]†

Markus Kreye,^a Matthias Freytag,^a Peter G. Jones,^a Paul G. Williard,^b Wesley H. Bernskoetter*^b and Marc D. Walter*^a

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* Corresponding authors

^a Institut für Anorganische und Analytische Chemie, Technische Universität, Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
E-mail: mwalter@tu-bs.de

^b Department of Chemistry, Brown University, Providence, RI 02912, USA
E-mail: wb36@brown.edu

Abstract

Reduction of the pincer nickel(II) complex [(PNP)NiBr] with sodium amalgam (Na/Hg) forms the mercury-bridged dimer [{(PNP)Ni}₂{μ-Hg}], which homolytically cleaves dihydrogen to form [(PNP)NiH]. Reversible CO₂ insertion into the Ni–H bond is observed for [(PNP)NiH], forming the monodentate κ¹O-formate complex [(PNP)NiOC(O)H].

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Article information

DOI: https://doi.org/10.1039/C4CC09743B
Article type: Communication
Submitted: 05 Dec 2014
Accepted: 08 Jan 2015
First published: 15 Jan 2015
This article is Open Access

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Chem. Commun., 2015,51, 2946-2949

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Homolytic H₂ cleavage by a mercury-bridged Ni(I) pincer complex [{(PNP)Ni}₂{μ-Hg}]

M. Kreye, M. Freytag, P. G. Jones, P. G. Williard, W. H. Bernskoetter and M. D. Walter, Chem. Commun., 2015, 51, 2946 DOI: 10.1039/C4CC09743B

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