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. 2019 Aug 13;10:544. doi: 10.3389/fendo.2019.00544

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Copyright © 2019 Idrees, Price, Piccariello and Bianco.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Strong bonding interactions (coordinate covalent bonds) between Zn and ligand donor atoms of T3^2- are shown in black; weak bonding interactions (halogen bonds) between iodine and X-bond acceptor atoms of T3^2- are shown in red dashed line. Both bonding modes contribute to polymer formation and stabilization. Two and 3-D structures, including metal organic frameworks, are possible.