Issue 35, 2021

Two cluster-based metal–organic frameworks with selective detection of Hg2+ ion and magnetic properties

Abstract

Two cluster-based metal–organic frameworks {[Cd5L4Br10]·2(CH3)2NH}n (1) and {[MnIII3OL(TA)3]F·sol}n (2) (L = 1,3,5-tris(benzimidazol-1-ylmethyl)-2,4,6-trimethylbenzene, TA = terephthalate anion) containing a semi-rigid tribenzimidazol-based ligand were synthesized and characterized. Single crystal X-ray analyses show that the structure of 1 contains pentanuclear cadmium clusters with an interesting four-fan shape, in which each μ2-Br interlinks two crystallographically unique Cd atoms, while 2 contains a trimanganese cluster with three Mn3+ ions present in an equilateral triangle distribution. Furthermore, 1 exhibits highly selective fluorescent detection of trace Hg2+, with the detection limit of 5.26 × 10−7 M−1. 2 shows antiferromagnetic interactions between Mn3+ ions.

Graphical abstract: Two cluster-based metal–organic frameworks with selective detection of Hg2+ ion and magnetic properties

Supplementary files

Article information

Article type
Paper
Submitted
23 jun 2021
Accepted
06 jul 2021
First published
09 jul 2021

CrystEngComm, 2021,23, 6053-6058

Two cluster-based metal–organic frameworks with selective detection of Hg2+ ion and magnetic properties

Q. Lin, Z. Zong, J. Tong, W. Xie and L. Liang, CrystEngComm, 2021, 23, 6053 DOI: 10.1039/D1CE00826A

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