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Polymorphism in metal complexes of thiazole-4-carboxylic acid

Meundaeng, Natthaya; Rujiwatra, Apinpus; Prior, Timothy J.

Authors

Natthaya Meundaeng

Apinpus Rujiwatra



Abstract

Five new molecular complexes of chemical formula [M(4-tza)₂(H₂O)₂] (M = Co, Ni, and Cu) and a complex of [Cu(4-tza)₂]∙4H₂O using thiazole-4-carboxylic acid (4-tza) as the ligand have been successfully synthesized and structurally characterized by single crystal X-ray diffraction. Two district polymorphs (α and β) are found for both [Co(4-tza)₂(H₂O)₂] and [Ni(4-tza)₂(H₂O)₂]. The effects of solvent composition and temperature on the formation of these polymorphs have been investigated and phase behaviour of the polymorphs was studied through X-ray powder diffraction. Unlike two complexes of Co and Ni, [Cu(4-tza)₂(H₂O)₂] does not display polymorphism but exhibits irreversible structural transformation from [Cu(4-tza)₂(H₂O)₂] to the dehydrated form, [Cu(4-tza)₂], upon heating.

Citation

Meundaeng, N., Rujiwatra, A., & Prior, T. J. (2016). Polymorphism in metal complexes of thiazole-4-carboxylic acid. Transition Metal Chemistry, 41(7), 783-793. https://doi.org/10.1007/s11243-016-0079-7

Journal Article Type Article
Acceptance Date Jun 30, 2016
Online Publication Date Jul 26, 2016
Publication Date 2016-10
Deposit Date Jul 5, 2016
Publicly Available Date Jul 26, 2016
Journal Transition metal chemistry
Print ISSN 0340-4285
Electronic ISSN 1572-901X
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 41
Issue 7
Pages 783-793
DOI https://doi.org/10.1007/s11243-016-0079-7
Keywords Thiazole-4-carboxylic acid; Crystal structure; Nickel; Cobalt; Copper; Polymorph
Public URL https://hull-repository.worktribe.com/output/440626
Publisher URL http://link.springer.com/article/10.1007/s11243-016-0079-7?view=classic
Copyright Statement © The Author(s) 2016
Open Access
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Additional Information This is a copy of an open access article published in: Transition metal chemistry. The final publication is available at Springer via http://dx.doi.org/10.1007/s11243-016-0079-7

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Copyright Statement
© The Author(s) 2016
Open Access
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.



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