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Calcium cyclic carboxylates as structural models for calcium carbonate scale inhibitors

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Abstract

Cyclic oligocarboxylic acids are the most commonly explored phosphate-free inhibitors for calcium carbonate scale deposition. The structural chemistry of calcium complexes of candidate inhibitors has the potential to give insight into inhibitor mode of action and design. We report a series of calcium compounds of cyclic oligocarboxylic acids of (1α,3α,5α)-1,3,5,-cyclohexanetricarboxylic acid (CHTCA); cyclohexane-1,2,4,5-tetracarboxylic acid (CHTTCA); 1,2,3,4,5,6-cyclohexanehexacarboxylic acid (CHHCA); 1,1-cyclohexandiacetic acid (CHDAA) and cis,cis,cis,cis-1,2,3,4-cyclopentanetetracarboxylic acid (CPTCA) to understand the relationship between ligand stereochemistry and calcium ion coordination mode.

Graphical abstract: Calcium cyclic carboxylates as structural models for calcium carbonate scale inhibitors

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Supplementary files

Article information


Submitted
18 Feb 2020
Accepted
15 Mar 2020
First published
16 Mar 2020

CrystEngComm, 2020, Advance Article
Article type
Paper

Calcium cyclic carboxylates as structural models for calcium carbonate scale inhibitors

Y. Hong, D. S. Yufit, N. Letzelter and J. W. Steed, CrystEngComm, 2020, Advance Article , DOI: 10.1039/D0CE00243G

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