Crystal structure and Hirshfeld surface analysis of di-μ-chlorido-bis­[(aceto­nitrile-κN)chlorido­(ethyl 5-methyl-1H-pyrazole-3-carboxyl­ate-κ2N2,O)copper(II)]

The title compound, [Cu2Cl4(C5H10N2O2)2(CH3CN)2] or [Cu2(μ2-Cl)2(CH3—Pz-COOCH2CH3)2Cl2(CH3CN)2], was synthesized using a one-pot reaction of copper powder, copper(II) chloride dihydrate and ethyl 5-methyl-1H-pyrazole-3-carboxyl­ate (CH3—Pz-COOCH2CH3) in aceto­nitrile under ambient conditions. This complex consists of discrete binuclear mol­ecules with a {Cu2(μ2-Cl)2} core, in which the Cu⋯Cu distance is 3.8002 (7) A. The pyrazole-based ligands are bidentate coordinated, leading to the formation of two five-membered chelate rings. The coordination geometry of both copper atoms (ON2Cl3) can be described as distorted octa­hedral on account of the aceto­nitrile coordination. A Hirshfeld surface analysis suggests that the most important contributions to the surface contacts are from H⋯H (40%), H⋯Cl/Cl⋯H (24.3%), H⋯O/O⋯H (11.8%), H⋯C/C⋯H (9.2%) and H⋯N/N⋯H (8.3%) inter­actions.