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Coordinative helix–helix association of heteroleptic metallosupramolecular helicates

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Abstract

The effective incorporation of well-defined coordination spheres, multiple types of ligands (heteroleptic), and specific assembly modes in a given structure enables the fabrication of simplified coordinative supramolecular bio-mimics. Herein, we report the fabrication of a unique racemic macrocycle via association of metallosupramolecular helicates. A nickel ({Ni4}) cluster-based supramolecular helicate, [Ni8(PDA)6(CDBA)3(DMF)2(H2O)4] (1) (PDA = 2,6-pyridinedicarboxylate, CDBA = 4,4′-carbonyldibenzoate, DMF = dimethylformamide), is successfully synthesized and fully characterized. Dimerization of right (P-) and left (M-) handed helicates of 1 via the coordination of metalloligands, [Ni(PDA2)]2− affords {[Ni8(PDA)6(CDBA)3(DMF)4–Ni(PDA)2]2} (2), which can be a representative model of the coordinative helix–helix association of heteroleptic helicates. The solid-state structures of 1 and 2 show high and selective CO2 uptake properties.

Graphical abstract: Coordinative helix–helix association of heteroleptic metallosupramolecular helicates

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Article information


Submitted
24 Oct 2019
Accepted
15 Dec 2019
First published
19 Dec 2019

Inorg. Chem. Front., 2020, Advance Article
Article type
Research Article

Coordinative helix–helix association of heteroleptic metallosupramolecular helicates

P. Kang and H. Yoo, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/C9QI01381D

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