Supramolecular isomorphic dodecanuclear cobalt clusters with the same metal shell but different core ligands?

Dalton Transactions Pub Date: 2022-05-01 DOI: 10.1039/D2DT00915C

Abstract

In this work, we report two supramolecular isomorphic dodecanuclear cobalt complexes, [Co12(mtz)3(L)6(NO3)2(OH)(N3)3]·(OH)3 (1) and [Co12(mtz)3(L)6(NO3)2(OH)(N3)(OAc)]·(OH)4 (2), (Hmtz = 5-methyl-1H-tetrazole, H2L = 7,7′-(ethane-1,1-diyl) diquinolin-8-ol) crystallizing in the [P with combining macron] space group with the same unit cell parameters. In 1 and 2, two pirate hat-like hexanuclear Co6(NO3)(L)3 units form the same dodecanuclear metal shell, but the ligands between the hexanuclear units as the core are distinct. The introduction of acetate anions leads to a blue shift of the absorption band in the visible region. Magnetism studies indicate an antiferromagnetic interaction between the CoII ions in the clusters.

Graphical abstract: Supramolecular isomorphic dodecanuclear cobalt clusters with the same metal shell but different core ligands
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