Abstract
The reactions of cadmium(II) and europium(III) pentafluorobenzoates ([Cd(Pfbz)\(\left( {{{{\text{H}}}_{{\text{2}}}}{\text{O}}} \right)_{{\text{4}}}^{ + }\)}n ∙ n(Pfbz)–] (I) and [Eu2(Pfbz)6(H2O)8] ∙ 2H2O (II), respectively; Pfbz is pentafluorobenzoic acid anion) with the N-donor ligands (pyridine (Py), 2-phenylpyridine (Phpy), and 3-ethynylpyridine (Etypy)) afford a series of new Cd–Ln complexes with Pfbz– anions and Py or its substituted analogues: [Cd2Eu2(Pfbz)10(Py)4] (III), [Cd2Eu2(Pfbz)10(Phpy)2(MeCN)2] · 5MeCN (IV), and [CdEu2(Pfbz)8(Etypy)(H2O)2]n ∙ 3nMeCN ∙ n(Etypy) (VI). Similar reactions of compounds I and II with 2,4-lutidine (Lut), isoquinoline (Iquin), 2,2'-biquinoline (Biquin), and 7,8-benzoquinoline (Bquin) give the following cadmium complexes as the major products of crystallization from the reaction solutions: [Cd(Pfbz)2(Lut)]n (V), [Cd(H2O)(Pfbz)2(Iquin)2]n (VII), [Cd(Рfbz)2(Biquin)] (VIII), and \([{\text{Cd}}{{({\text{Pfbz}})}_{{\text{3}}}}]_{n}^{-}\) ∙ n(HBquin)+ (IX), respectively. The X-ray diffraction data (CIF files CCDC nos. 1987805 (I), 1987808 (III), 1987829 (IV), 1987817 (V), 1987822 (VI), 1987823 (VII), 1987824 (VIII), and 1987826 (IX)) are examples of the formation of new unusual coordination polymers.
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ACKNOWLEDGMENTS
The XRD analyses (complexes I and II), IR spectroscopy, and elemental analyses (of all complexes) were carried out on the equipment of the Center for Collective Use “Physical Methods of Investigation” at the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences) in terms of the state assignment of the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences) in the area of basic research. The data on the structure of compound V were obtained on the X-ray beam of the Belok station of the Kurchatov Synchrotron Radiation Source at the Kurchatov Institute Russian Research Center.
Funding
Complexes I, III, and IV were synthesized and studied in terms of the Russian Science Foundation (project no. 16-13-10537), complexes V and VII–IX were synthesized and studied in terms of the state assignment of the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences) in the area of basic research, and the synthesis and study of complex VI were supported by the Russian Foundation for Basic Research (project no. 18-29-04043).
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The coauthors congratulate Academician I.L. Eremenko on his 70th jubilee
Translated by E. Yablonskaya
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Shmelev, M.A., Gogoleva, N.V., Kuznetsova, G.N. et al. Cd(II) and Cd(II)–Eu(III) Complexes with Pentafluorobenzoic Acid Anions and N-Donor Ligands: Synthesis and Structures. Russ J Coord Chem 46, 557–572 (2020). https://doi.org/10.1134/S1070328420080060
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DOI: https://doi.org/10.1134/S1070328420080060