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A systematic study of halide-template effects in the assembly of lanthanide hydroxide cluster complexes with histidine

Abstract

A series of polynuclear lanthanide (Ln) complexes were prepared by the hydrolysis of the lanthanide ions using L-histidine as supporting ligand. Halide ions (X- = Cl-, Br-, and I-) have been found to play a major role in templating the assembly of pentadecanuclear complexes for Nd(III) and Gd(III) with the definitive showing of a μ5-X- in the cluster core formed by five corner-shared cubane units of [Ln(μ3-OH)4]8+. For the heavier and smaller Er(III), analogous pentadecanuclear complexes templates by μ5-Cl- and μ5-Br- were also isolated, but an otherwise identical reaction in the presence of added I- afforded a dodecanuclear complex with a core of four corner-shared cubanes. Two I- guests are found, one on each side of the wheel-like structure and in close contact with the μ3-OH groups. For the medium size Gd(III), dodecanuclear complex with two I- also can be formed by changing the metal-ligand ratio. The halide-template effects are analyzed, and the production of different cluster

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Supplementary files

Article information


Submitted
17 Aug 2020
Accepted
29 Sep 2020
First published
30 Sep 2020

Inorg. Chem. Front., 2020, Accepted Manuscript
Article type
Research Article

A systematic study of halide-template effects in the assembly of lanthanide hydroxide cluster complexes with histidine

Z. Zheng, L. Messerle, W. Huang, W. Chen, Z. Zhang, Y. Wu and D. Rotsch, Inorg. Chem. Front., 2020, Accepted Manuscript , DOI: 10.1039/D0QI01004A

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