Synthesis, Crystal Structure, and Hirshfeld Surface Analysis of Hexachloroplatinate and Tetraclorouranylate of 3-Carboxypyridinium—Halogen Bonds and π-Interactions vs. Hydrogen Bonds
oleh: Anton Petrovich Novikov, Mikhail Alexandrovich Volkov, Alexey Vladimirovich Safonov, Mikhail Semenovich Grigoriev
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2022-02-01 |
Deskripsi
This work aimed to synthesize new platinum and uranium compounds with nicotinic acid. In this article we describe the synthesis of two new anionic complexes (HNic)<sub>2</sub>[PtCl<sub>6</sub>] and (HNic)<sub>2</sub>[UO<sub>2</sub>Cl<sub>4</sub>] using wet chemistry methods. The structure of the obtained single crystals was established by single-crystal X-ray diffraction. The Hirshfeld surface analysis of the obtained complexes and their analogue (HNic)<sub>2</sub>[SiF<sub>6</sub>] was carried out for the analysis of intermolecular interactions. Hydrogen bonds (H···Hal/Hal···H and O···H/H···O) make the main contribution to intermolecular interactions in all compounds. Other important contacts in cations in all compounds are H···H, C···H/H···C and C···Hal/Hal···C; in anions H···Hal/Hal···H. The Pt-containing complex has a halogen-π interaction and halogen bonds, but Si-containing complex has a π–π staking interaction; these types of interactions are not observed in the U-containing compound.