Two novel 2-fold interpenetration frameworks constructed by 4,4′-bis(1H-imidazol-1-yl-methyl)biphenyl cobalt(II) coordination polymer and the effect of dicarboxylic acid

Add time:07/18/2019    Source:sciencedirect.com

To investigate the construction of interpenetrating frameworks, two novel coordination polymers [Co(bimb)3](NO3)2·2H2O (1) and [Co(bimb)(bdc)]·H2O (2) [bimb = 4,4′-bis(1H-imidazol-1-yl-methyl)biphenyl; H2bdc = 1,2-benzenedicarboxylic acid] were hydrothermally synthesized and characterized by elemental analysis, IR, PXRD and TGA. Complex 1 shows a 2-fold pcu interpenetrating framework. However, complex 2 exhibits a rare 2-fold uoc interpenetrating framework due to the introduction of bdc anion. The results indicate that the presence of the second ligand could tune the product structures. Photoluminescence properties of complexes 1 and 2 reveal the cobalt ion disturbed ligand emission.

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