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A zinc(II) complex of  cis -1,2-diaminocyclohexane (Dach), [Zn(Dach) 2 ][ZnCl 4 ] ( 1 ), was prepared and its structure was determined by X-ray crystallography. Theoretical (density functional theory) studies were performed for the two model compounds, [Zn(Dach) 2 ][ZnCl 4 ] ( 1 ) and {[Zn(Dach) 2 ][ZnCl 4 ]} 3  ( 1   3  ). The structure of complex  1  is composed of [Zn(Dach) 2 ] 2+  cations and [ZnCl 4 ] 2−  anions. The Zn1 atom in the cationic complex adopts a severely distorted tetrahedral geometry, while in the anionic part, Zn2 displays only a slight distortion from tetrahedral coordination. The adjacent cations and anions are associated with each other through hydrogen bonding interactions to form a two-dimensional network in the solid state.

Crystal structure and theoretical investigation of bis( cis -1,2-diaminocyclohexane)zinc(II) tetrachloridozincate(II)