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Dinuclear complexes of Mn, Co, Zn and Cd assembled with 1,4-cyclohexanedicarboxylato: Synthesis, crystal structures and acetonitrile fluorescent sensing properties

Abstract

Four dinuclear complexes: [Mn2(H2O)2(chdc)2(bipy)2], 1; [Co2(H2O)2(chdc)2(bipy)2]·H2O, 2; [Zn2(H2O)2(chdc)2(bipy)2]·H2O, 3; and [Cd2(H2O)2(chdc)2(bipy)2]·H2O, 4; chdc = e,a-cis-1,4,cyclohexanedicarboxylate and bipy = 2,2’-bipyridine; were attained as single crystals at ambient conditions. Crystallographic studies show that complexes 1, 2 and 3 are isostructural and crystallize in a monoclinic system with P21/c space group. The metal centers in these complexes are hexa-coordinated with a distorted octahedral coordination sphere. Complex 4 crystallizes in a triclinic system with a P-1 space group; in this compound the metal centers are hepta-coordinated and their coordination sphere is distorted-capped trigonal prismatic. Magnetic properties measurements reveal that complexes 1 and 2 exhibit weak antiferromagnetic ordering. Complex 4 displays solid-state blue emission properties and a high-sensitive response to acetonitrile in water based on turn-on fluorescence with a low detection limit of 1.1 µM and selectivity over common polar organic solvents.

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Supplementary files

Article information


Submitted
22 Mar 2020
Accepted
17 May 2020
First published
18 May 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Dinuclear complexes of Mn, Co, Zn and Cd assembled with 1,4-cyclohexanedicarboxylato: Synthesis, crystal structures and acetonitrile fluorescent sensing properties

L. D. Rosales-Vazquez, D. Martínez-Otero, V. Sanchez-Mendieta, J. Jaramillo-Garcia, A. Tellez-Lopez, R. ESCUDERO, F. Morales, J. Valdes-Garcia and A. Dorazco-González, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/D0NJ01410A

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