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Synthesis, Structure, and Spectroscopic Properties of Calcium Thiophenecarboxylate Polymers. Structural Comparison with Analogous Lead Complexes

Abstract

Three novel calcium coordination polymers [Ca(2tpCOO)2(2mpa)(H2O)]n (1), [Ca(3tpCOO)2(2mpa)(H2O)]n (2), and {[Ca(3tpacCOO)2(H2O)2]⋅⋅⋅H2O}n (3) (2tpCOO− or 3tpCOO− – thiophene-2- or thiophene-3-carboxylate, 3tpacCOO− – thiophene-3-acetate, 2mpa – 2-methylpropanal), were synthesised using a self-assembly method. The obtained polymers were characterised using SC-XRD, FTIR, UV-Vis DRS, thermogravimetric and luminescence analyses. The polymer fluorescence studies showed that calcium complexes can emit light of different colours ranging from violet (1) and blue (2) to green (3). The molecular structure of each polymer consists of a calcium ion at the centre of a dodecahedral coordination sphere. The crystal structure consists of one dimensional zigzag chains that form a three-dimensional network via π⋅⋅⋅π, C−H⋅⋅⋅π and O−H⋅⋅⋅O or O−H⋅⋅⋅S interactions. Additionally, a comparative structural analysis of CaCPs with lead(II) coordination polymers containing analogous linkers was performed as part of modelling studies to explore the substitution of calcium ions by lead ions in biological polymers.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY no. 29, pages 1 - 10,
ISSN: 1434-1948
Language:
English
Publication year:
2022
Bibliographic description:
Masternak J., Kazimierczuk K., Kupcewicz B., Brzeski J., Kowalik M.: Synthesis, Structure, and Spectroscopic Properties of Calcium Thiophenecarboxylate Polymers. Structural Comparison with Analogous Lead Complexes// EUROPEAN JOURNAL OF INORGANIC CHEMISTRY -Vol. 29, (2022), s.1-10
DOI:
Digital Object Identifier (open in new tab) 10.1002/ejic.202200353
Sources of funding:
  • Free publication
Verified by:
Gdańsk University of Technology

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