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Boric acid co-crystals in guar gelation.

Perrin, Andrea and Goodwin, Melissa J. and Musa, Osama M. and Yufit, Dimitrii S and Steed, Jonathan W. (2017) 'Boric acid co-crystals in guar gelation.', CrystEngComm., 19 (47). pp. 7125-7131.


A series of bis(pyrrolidone) and ε-caprolactam co-crystals of boric acid and 1,4-phenylenediboronic acid are reported. The high polarity of the lactam carbonyl group is highly complementary to the boronic acid hydrogen bond donor functionalities and co-crystals are based on cyclic boronic acid tape motifs, including an unusual donor-donor motif, with strong perpendicular interactions to the lactam functionalities. All of the co-crystals are able to act as a source of boric or boronic acid cross-linker in guar gelation.

Item Type:Article
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Date accepted:16 November 2017
Date deposited:17 November 2017
Date of first online publication:16 November 2017
Date first made open access:16 November 2018

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