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Stable Di‐ and Tri‐coordinated Carbon(II) Supported by an Electron‐Rich β‐Diketiminate Ligand

Abstract

Complexes of the ubiquitous β‐diketiminates (NacNac) ligands have been reported with most elements of the periodic table, including Group 14 Si, Ge, Sn, and Pb. The striking absence of carbon representatives has been attributed to the extreme electrophilicity of the putative C‐NacNac adducts. An electron enriched 2,4‐(dimethylamino)diketiminato backbone is described, which allowed for the synthesis and isolation of such stable pyrimidin‐1,3‐diium and pyrimidinium‐2‐ylidene salts. Structural and preliminary reactivity studies are reported, including an air‐stable gold complex. An unforeseen original class of stable N‐heterocyclic carbenes and, more generally, the potential of electron‐rich NacNac patterns for taming highly electrophilic centers are showcased.

Endlich auch Kohlenstoff: Nach den meisten Elementen des Periodensystems, einschließlich Silicium, Germanium, Zinn und Blei aus der Gruppe 14, wurden nun auch niedervalente Addukte von Kohlenstoff(II) – mit einem β‐Diketiminat‐Liganden – entworfen und isoliert.

Authors:   Vianney Regnier, Yoan Planet, Curtis E. Moore, Jacques Pecaut, Christian Philouze, David Martin
Journal:   Angewandte Chemie
Year:   2016
Pages:   n/a
DOI:   10.1002/ange.201610798
Publication date:   20-Dec-2016
More about Angewandte Chemie
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