Abstract
The centrosymmetric dinuclear title compound, [Zn2Cl4(C4H12N2)2], is isostructural with its previously reported CuII analogue [Phelps, Goodman & Hodgson (1976 ▶). Inorg. Chem. 15, 2266–2270]. In the title compound, each of the ZnII ions is coordinated by two N atoms from a chelating N,N-dimethylethylenediamine ligand, two bridging Cl atoms and one terminal Cl atom. The coordination environment is distorted square-pyramidal. The Zn—Cl bond distances of the two bridging Cl atoms are distinctly different: the equatorial Cl atom exbibits a Zn—Cl distance of 2.318 (1) Å and the axial Cl atom exbibits a Zn—Cl distance of 2.747 (2) Å, which is significantly longer. The molecule can thus be seen as a dimer of two nearly square-planar monomeric units which are related to each other by an inversion center located in the middle of the dimer. Within one monomeric unit, the Zn atom, the two N atoms and the two Cl atoms are almost coplanar, with a mean deviation of only 0.05 (1) Å from the associated least-squares plane. The Zn⋯Zn distance within the dimer is 3.472 (3) Å. N—H⋯Cl and C—H⋯Cl hydrogen-bond interactions connect neighboring molecules with each other.
Highlights
Each of the ZnII ions is coordinated by two N atoms from a chelating N,N-dimethylethylenediamine ligand, two bridging Cl atoms and one terminal Cl atom
The molecule can be seen as a dimer of two nearly square-planar monomeric units which are related to each other by an inversion center located in the middle of the dimer
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1/2, y−1/2, z
Summary
Each of the ZnII ions is coordinated by two N atoms from a chelating N,N-dimethylethylenediamine ligand, two bridging Cl atoms and one terminal Cl atom. The Zn—Cl bond distances of the two bridging Cl atoms are distinctly different: the equatorial Cl atom exbibits a Zn—Cl distance of 2.318 (1) Å and the axial. Cl atom exbibits a Zn—Cl distance of 2.747 (2) Å, which is significantly longer. The molecule can be seen as a dimer of two nearly square-planar monomeric units which are related to each other by an inversion center located in the middle of the dimer. The Zn atom, the two N atoms and the two Cl atoms are almost coplanar, with a mean deviation of only 0.05 (1) Å from the associated least-squares plane. N—H Cl and C—H Cl hydrogen-bond interactions connect neighboring molecules with each other
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