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Issue 45, 2013

Sr2+ and Cd2+ coordination polymers: the effect of the different coordinating behaviour of a newly designed tricarboxylic acid

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Abstract

This article presents the investigation of the coordination behavior of a newly synthesized tricarboxylate ligand, obtained by joining imidazole dicarboxylic acid and 4-carboxybenzyl moieties [cbimdaH3, 1-(4-carboxybenzyl)-1H-imidazole-4,5-dicarboxylic acid]. Two novel coordination polymers were obtained through solvothermal reactions under similar conditions namely [Sr(cbimdaH)(H2O)]n (1) and [Cd2(cbimdaH)2(H2O)6]n·(DMF)3n(H2O)3n (2), with the ligand behaving as a dianionic tricarboxylate linker. The single crystal X-ray structures show that while 1 forms a 3D coordination polymer, 2 forms a 1D polymer which is further assembled in three dimensions through supramolecular interactions (H-bonding). Complex 1 consists of Sr2+ ions in a distorted dodecahedral coordination geometry, while 2 consists of Cd2+ ions in distorted pentagonal bipyramidal geometries. A topology study reveals that 1 has a new topology based on the 5,6-coordinated 3D net architecture. The luminescence properties of the complexes in the solid state and their thermal stabilities were studied.

Graphical abstract: Sr2+ and Cd2+ coordination polymers: the effect of the different coordinating behaviour of a newly designed tricarboxylic acid

Supplementary files

Article information


Submitted
10 Jun 2013
Accepted
07 Aug 2013
First published
08 Aug 2013

CrystEngComm, 2013,15, 9596-9602
Article type
Paper

Sr2+ and Cd2+ coordination polymers: the effect of the different coordinating behaviour of a newly designed tricarboxylic acid

B. Roy, S. Mukherjee and P. S. Mukherjee, CrystEngComm, 2013, 15, 9596 DOI: 10.1039/C3CE41080C

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