The crystal structure of a mononuclear PrIII complex with cucurbit[6]uril
| Autor: | George V. Fedorenko, Oleksandr I. Zbruyev, Anna V. Pavlishchuk, Lyudmila P. Oleksenko, Sergiu G. Shova, Valentyn A. Chebanov, Vitaly V. Pavlishchuk |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E: Crystallographic Communications, Vol 80, Iss 7, Pp 789-794 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2056-9890 20569890 |
| DOI: | 10.1107/S2056989024005760 |
| Popis: | A new mononuclear complex, pentaaqua(cucurbit[6]uril-κ2O,O′)(nitrato-κ2O,O′)praseodymium(III) dinitrate 9.56-hydrate, [Pr(NO3)(CB6)(H2O)5](NO3)2·9.56H2O (1), was obtained as outcome of the hydrothermal reaction between the macrocyclic ligand cucurbit[6]uril (CB6, C36H36N24O12) with a tenfold excess of Pr(NO3)3·6H2O. Complex 1 crystallizes in the P21/n space group with two crystallographically independent but chemically identical [Pr(CB6)(NO3)(H2O)5]2+ complex cations, four nitrate counter-anions and 19.12 interstitial water molecules per asymmetric unit. The nonacoordinated PrIII in 1 are located in the PrO9 coordination environment formed by two carbonyl O atoms from bidentate cucurbit[6]uril units, two oxygen atoms from the bidentate nitrate anion and five water molecules. Considering the differences in Pr—O bond distances and O—Pr—O angles in the coordination spheres, the coordination polyhedrons of the two PrIII atoms can be described as distorted spherical capped square antiprismatic and muffin polyhedral. |
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