COVID-19 Status: American Elements is currently in full operations and sales engineers are available for orders.

Calcium Hydride Reactivity: Formation of an Anionic N-Heterocyclic Olefin Ligand.

Author(s) Causero, A.; Elsen, H.; Pahl, J.; Harder, S.
Journal Angew Chem Int Ed Engl
Date Published 2017 Jun 06
Abstract

An anionic N-heterocyclic olefin ligand was serendipitously obtained by reaction of an amidinate calcium hydride complex with 1,3-dimethyl-2-methyleneimidazole (NHO). Instead of anticipated addition to the polarized C=CH2 bond to form an unstabilized alkylcalcium complex, deprotonation of the NHO ligand in the backbone was observed. Preference for deprotonation versus addition is explained by loss of aromaticity in the latter conversion. Theoretical calculations demonstrate the substantially increased ylidic character of this anionic NHO ligand which, like N-heterocyclic dicarbenes, shows strong bifunctional coordination.

DOI 10.1002/anie.201703037
ISSN 1521-3773
Citation Causero A, Elsen H, Pahl J, Harder S. Calcium Hydride Reactivity: Formation of an Anionic N-Heterocyclic Olefin Ligand. Angew Chem Int Ed Engl. 2017;56(24):6906-6910.

Related Applications, Forms & Industries