Crystal structure of bis{μ2-2,2′-[(4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diyl)bis(methylene)]bis(4-oxo-4H-pyran-3-olato)}dicobaltcalcium bis(perchlorate) 1.36-hydrate

The title compound is a new heterotrinuclear CoII–CaII–CoII dimer of L1. L1 undergoes a cobalt-driven preorganization, leading to the formation of an electron-rich area able to host a hard metal ion such as CaII. In the dimer, two neutral [Co(H–2 L1)] moieties, held together by the CaII ion, are rotated by 90°. The trinuclear complexes form layers perpendicular to the c axis; the perchlorate anions are located between the layers and interact with the complexes, as well as the lattice water molecules.

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