A metal-assisted conversion of CO2 and imidazole to carboxylate: synthesis and structural characterisation of the zinc carboxylate {bis(1-methyl-2-imidazolecarboxylato)(1-methylimidazole)}zinc(II), [Zn(1-Me-2-Imc)2(1-MeIm)] 1

Add time:08/31/2019    Source:sciencedirect.com

Heating a suspension of zinc dust in 1-methylimidazole for 48 h under carbon dioxide atmosphere at 150°C affords in very good yield the zinc(II) carboxylate {bis(1-methyl-2-imidazolecarboxylato)(1-methylimidazole)}zinc(II), [Zn(1-Me-2-Imc)2(1-MeIm)].The complex has been characterised by spectral and X-ray diffraction methods. [Zn(1-Me-2-Imc)2(1-MeIm)]·THF crystallises in the triclinic system P-1. The zinc atom exhibits a trigonal-bipyramidal coordination. The 1-methyl-2-imidazolecarboxylato ligands display an N,O-bidentate coordination with the carboxylic oxygen atoms occupying the apices of the trigonal bipyramid. The nitrogen atoms of both carboxylate ligands and neutral 1-methylimidazole molecule are localised in the equatorial plane.

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