Cage-like crystal packing through metallocavitands within a cobalt cluster-based supramolecular assembly
作者： Philjae Kang , Hien Duy Mai , Hyojong Yoo
DOI: 10.1039/C8DT00747K
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摘要: A cobalt (Co) supramolecular triple-stranded helicate, [Co8(PDA)6(Br-PTA)3(DMF)4(H2O)2] (1) (PDA = 2,6-pyridinedicarboxylate, Br-PTA 5-bromoisophthalate, DMF dimethylformamide), is successfully synthesized and fully characterized. The solid-state structure of 1 shows that four atoms are coordinated by three PDA ligands to form a tetranuclear cluster with extension points the ditopic interlink two basic assembly units. In crystal packing, bromo group surrounded cavity-like cluster, which acts as metallocavitand, generate unique cage-like packing geometry. isomorphous molecular cage, exhibits similar crystal-packing geometry observed in 1, also isolated. This an unusual example highly symmetric architecture, resulting from interaction among metallocavitands situ generated modules.
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