Cage-like crystal packing through metallocavitands within a cobalt cluster-based supramolecular assembly. Issue 19 (19th April 2018)

• Record Type: Journal Article
• Authors: Kang, Philjae; Mai, Hien Duy; Yoo, Hyojong
• Is Part Of: Dalton transactions. Volume 47:Issue 19(2018)
• Page Start: 6660
• Page End: 6665
• Publication Date: 2018-04-19
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt00747k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The generation of cage-like crystal packing geometry of TSHs in the solid state induced by the host–guest interactions among metallocavitands. Abstract : A cobalt (Co) supramolecular triple-stranded helicate, [Co8 (PDA)6 ( Br -PTA)3 (DMF)4 (H2 O)2 ] (1 ) (PDA = 2, 6-pyridinedicarboxylate, Br -PTA = 5-bromoisophthalate, DMF = dimethylformamide), is successfully synthesized and fully characterized. The solid-state structure of1 shows that four cobalt atoms are coordinated by three PDA ligands to form a tetranuclear cobalt cluster with three extension points and the ditopic Br -PTA ligands interlink two basic assembly units. In crystal packing, the bromo group is surrounded by the cavity-like tetranuclear cobalt cluster, which acts as a metallocavitand, to generate a unique cage-like crystal packing geometry. The isomorphous molecular cage, which exhibits a similar crystal-packing geometry as observed in1, is also successfully isolated. This is an unusual example of a highly symmetric cage-like crystal packing architecture, resulting from the interaction among metallocavitands of in situ generated supramolecular modules.