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Stacking Interactions Induced Selective Conformation of Discrete Aromatic Arrays and Borromean Rings

2017; American Chemical Society; Volume: 139; Issue: 4 Linguagem: Inglês

10.1021/jacs.6b11968

1943-2984

Long Zhang, Lin Lin, Dong Liu, Yue‐Jian Lin, Zhen Hua Li, Guo‐Xin Jin,

Crystallography and molecular interactions

Herein, we describe how to utilize stacking interactions to achieve selective supramolecular transformation and molecular Borromean rings (BRs). By using a dinuclear naphthalenediimide (NDI)-based Cp*Rh acceptor and linear bipyridyl ligands, organometallic rectangles featuring dynamic behavior have been constructed. Unique discrete aromatic stacking arrays were formed by inducing pyrene units as guest molecules. The topology of the BRs was realized by the use of a strategically chosen ligand which was capable of participating in D–A interactions and hydrogen bonding, as evidenced from single-crystal X-ray analysis and computational studies. These self-assembly processes underline the advantages of dynamic bonding and π–π stacking interactions, and serve to illustrate a new approach to generating structurally and topologically nontrivial supramolecular architectures.