Publications by authors named "Alla Tolstikhina"
Features of the crystal structure and surface of superprotonic conductor caesium hydrogen sulfate phosphate.
Acta Crystallogr B Struct Sci Cryst Eng Mater
June 2024
The crystal structure of superprotonic conductor caesium hydrogen sulfate phosphate [Cs(HSO)(HPO)] have been analyzed using neutron diffraction methods. Additionally, its structure and surface layers have been investigated using atomic force microscopy. From the diffraction data obtained, Fourier syntheses of neutron scattering densities were calculated, and the localization of hydrogen atoms and the parameters of three types of hydrogen bonds in the crystal structure were accurately determined.
View Article and Find Full Text PDFConductivity, its anisotropy and changes as a manifestation of the features of the atomic and real structures of superprotonic [K(NH)]H(SO) crystals.
Acta Crystallogr B Struct Sci Cryst Eng Mater
February 2023
Article Synopsis
- The study focuses on single crystals of [K(NH)]H(SO) that were grown in a specific water-salt system, revealing details about their atomic structure, including hydrogen atoms.
- The crystals exhibit trigonal symmetry and have disordered hydrogen-bond networks at room temperature, resembling high-temperature phases of related compounds.
- Impedance measurements indicate high conductivity typical of superprotonic phases, with notable differences in conductivity based on crystal orientation and structure.
The protective effect of the bisphosphonate drug xydiphone (K,Na-ethidronate) on membrane-bound enzyme damaged by lead ions has been studied. A protein/lipid film of Ca-ATPase/phosphatedylethanolamine deposited on a silicon substrate was used as a model system. The position of lead ions within the molecular film before and after the xydiphone treatment was determined using the total-reflection X-ray fluorescence method.
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