Study of Complex Formation in B15C5–Chloroform–Substituted Acetic Acids Extraction Systems by IR Spectroscopy

Демина, Л. И.; Костикова, Г. В.; Zhilov, V. I.

doi:10.1134/s0036023619030082

Cited by 4 publications

(1 citation statement)

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“…the spectrum of 2. These bands characterize HÁ Á ÁCl hydrogen bonds (Demina et al, 2019). Since the Cl atoms of the complex [AuCl 4 ] À anions are involved in the binding of species in the crystal structure of 2, the bands characterizing the formation of these hydrogen bonds are more intense and localized than in the spectrum of 1, where the [AuCl 4 ] À complexes are shielded from hydrogen bonding by the cells of adenine cations.…”

Section: Figurementioning

confidence: 99%

Syntheses and crystal structures of new aurate salts of adenine or guanine nucleobases

et al. 2020

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Two new gold(III) complexes with adenine or guanine nitrogenous bases as counter-cations were synthesized. These are 6-amino-7H-purine-1,9-diium tetrachloridogold(III) chloride monohydrate, (C 5 H 7 N 5 )[AuCl 4 ]ClÁH 2 O, 1, and 2-amino-6-oxo-6,7-dihydro-1H-purin-9-ium tetrachloridogold(III) hemihydrate, (C 5 H 6 N 5 O)[AuCl 4 ]Á0.5H 2 O, 2. Their crystal structures were studied using singlecrystal X-ray diffraction and FT-IR spectroscopic techniques. The arrangement of species in the studied crystal structures implies -stacking interactions, as well as concomitant C-HÁ Á Á interactions, hydrogen bonds and other types of noncovalent interactions, which were studied qualitatively and quantitatively using the method of molecular Voronoi-Dirichlet polyhedra. The variation of the nitrogenous base from adenine to guanine results in evident differences in the packing of the species in the crystals of 1 and 2. The splitting and shifting of bands in the FT-IR spectra of the title compounds reveals several features representative of noncovalent interactions in their crystal structures.

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Section: Figurementioning

confidence: 99%