Abstract
Coordination polymers of cadmium(II) with the di(pyrazol-1-yl)alkane derivatives, bis(3,5-dimethylpyrazol-1-yl)methane-4,4′-dicarboxylic acid (H2L1) and 1,3-bis(pyrazol-1-yl)propane-4,4′-dicarboxylic acid (H2L2), are synthesized. The crystal structures of the products are determined by X-ray diffraction (CIF files CCDC nos. 2172853 (I) and 2172854 (II)). The Cd2+ ions and dicarboxylic acid with one methylene group between the pyrazole cycles form a three-dimensional coordination polymer with a single mutual intergrowing of coordination networks, whereas three methylene groups result in the formation of a two-dimensional coordination polymer, the layers of which are linked by hydrogen bonds involving water molecules in the coordination sphere of the Cd2+ ions. The luminescence spectra of the synthesized coordination polymers exhibit two bands: with the local intraligand excitation and with the metal–ligand charge transfer.
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Funding
This work was supported by the Committee of Science of the Ministry of Education and Science of Kazakhstan (grant no. AP08856049). The physicochemical characterization of the synthesized compounds was carried out at the Center for Collective Use at the Nikolaev Institute of Inorganic Chemistry (Siberian Branch, Russian Academy of Sciences) and supported by the Ministry of Science and Higher Education of the Russian Federation (projects nos. 121031700321-3 and 121031700313-8).
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Dedicated to Academician Yu.A. Zolotov in the year of his 90th birthday
Translated by E. Yablonskaya
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Pershina, E.A., Burlutskiy, N.P., Pavlov, D.I. et al. Coordination Polymers of Cadmium with Di(pyrazol-1-yl)alkane-4,4'-dicarboxylic Acids: Synthesis, Crystal Structures, and Luminescence Properties. Russ J Coord Chem 48, 601–607 (2022). https://doi.org/10.1134/S1070328422100049
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DOI: https://doi.org/10.1134/S1070328422100049