Bhattacharya, Dibyendu (2014) pH-driven structure modulations in cobalt(II) coordination polymers constructed from 2,2 '-bipyridine-5,5 '-dicarboxylic acid. Indian Journal of Chemistry, 53A. pp. 46-51.

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Two new Co(II) coordination polymers, viz., [{Co(bpdc)(H2O)}.CH3OH] (1) and [Co(bpdc)(H2O)3] (2) (H2bpdc = 2,2’-bipyridine-5,5’-dicarboxylic acid) are obtained in quantitative yields from the reaction of CoCl2.6H20 and H2bpdc in a water-rich environment in the presence of KOH at ambient temperature. While at pH = 5, compound (2) showing a 1D zigzag chain is obtained, at pH = 2, compound (1) is obtained which has a 2D rhombic grid-work from two sets of parallel {Co(H2O)(bpdc)} chains which cross at the Co(II) sites at an angle 70o with (4,4)-topology. Hence the pH of the solution is found to be an important factor in determining the coordination mode and dimensionality in the self-assembly of Co(II) and H2bpdc under mild conditions.

Item Type: Article
Subjects: Chemistry
Depositing User: Dr. Sarita Ghosh
Date Deposited: 22 Sep 2016 11:03
Last Modified: 22 Sep 2016 11:31

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