Crystal structure and magnetic properties of catena-poly[bromido[trans (1S,2S)/(1R,2R)-cyclohexane-1,2-diamine copper(II)]-μ3-bromido]

Catena-poly[bromido [trans(1S,2S)/(1R,2R)-1,2-cyclohexane-1,2-diamine copper(II)]-μ3-bromido], compound 1, exhibits a one-dimensional, coordination polymer structure in which chiral organic ligands are coordinated to a central inorganic ladder. In the structure layers of polymers of different chirality alternate, forming a racemic crystal. Strong, charge assisted hydrogen bonds link neighbouring polymers to form a two-dimensional hydrogen bonded sheet. Below 10 K weak antiferromagnetic interactions are observed between the copper(II) ions.

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► The title compound is a one-dimensional coordination polymer.
► Layers of coordination polymers of different chirality alternate, forming a racemic crystal.
► Weak antiferromagnetic interactions are observed between the copper ions at low temperature.
► The magnetic results can be interpreted using a one- or two-dimensional antiferromagnetic model.