Chemical synthesis reveals unprecedented tridecanuclear copper-sodium cagelike silsesquioxanes, indicating the highest nuclearity achieved for copper(II)-based cage architectures.
A series of three unprecedented heterometallic copper(II) sodium silsesquioxanes were isolated (i) via the unusual rearrangement process during synthesis of coordination polymers or (ii) via the self-assembly reaction using 2,2′-bipyridine. The unique type of these products’ molecular topology consists of an unusual fusion of two sandwich-like components (each including five copper and one sodium sites) via a central copper ion. These compounds correspond to the highest nuclearity among Cu(II)-based cage silsesquioxanes reported to date.
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Astakhov et al. (2018) studied this question.
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