Copper Dimer With Acetate-2-Ethylimidazole as Ligands

Abstract

By aging a mixture of ammonia solution of copper acetate and of 2-ethylimidazole in ethanol, crystals of the copper acetate-2-ethylimidazole complex were obtained. The solid crystallizes in the monoclinic P2₁/n space group with two formula units per unit cell. In the structure the copper atom is found in distorted square-planar coordination to three oxygen atoms from acetate groups and to the N atom of a 2-ethylimidazole molecule. To the solid stability and the complex configuration, a network of hydrogen bonding interactions is contributing. Both the ethyl and NH groups of 2-ethylimidazole were found forming hydrogen bridges with the oxygen atoms of the acetate groups. The structural information derived from X-ray single-crystal analysis was complemented with infrared and thermogravimetric data.

Keywords:

• crystal structure
• copper complex
• copper ethylimidazole complex
• hydrogen bonding

Supplementary Material

Supplemental data for this article can be accessed at the publisher's website. This file contains the refined atomic positions, occupation, and thermal factors and the calculated interatomic distances and bond angles for the crystal structure of the studied complex. This structural information is also deposited at the Cambridge Crystallographic Data Centre (E-mail: [email protected]) with CCDC file number: 814039.

Additional information

Funding

This study was partially supported by the projects CONACyT 2009-01-123480 and 2011-16300. JH thanks ICyTDF-CLAF program for a PhD studentship.