The topology of the phase diagram of the four-component mutual system Li,Na,Pb//WO4,SO4 has been analyzed. It is shown that it is saturated with the formation of double compounds, as well as triple bonding. Triangulation of the phase diagram into stable elements has been carried out by the graph method and the main chemical reactions of exchange by the conversion method have been revealed. The phase diagram of the internal stable section Li2SO4 -Na2SO4 -PbWO4 was studied by the differential thermal analysis, the coordinates of the three ternary nonvariant points, including eutectics, peritectics and transition point of wedging were revealed. The possibility of chemical synthesis of lead oxide tungsten bronzes in eutectic melts of the three-component system Li2SO4 Na2SO4 -PbWO4 has been shown.

With the advent of methods that effectively solve the problems of modeling metal ions in the gas, water, and solid phases, computational tools are becoming increasingly important in chemical research. here we consider both quantum and classical strategies for modeling systems containing metal ions that have been developed over the past few decades. This experiment was performed to study solutions of copper (II) and Nickel (II) complexes containing the following ligands, such as ammonia, diene, ene, and water in molar ratios, and to characterize the visible spectrum of the prepared solutions. The research was divided into three parts. In the first part, Nickel complexes were prepared and their formulas were determined using the job method. The second part of the experiment was performed to obtain EN-complexes of copper (II), and in the last part diene complexes were obtained. Dien and en were used as ligands.

The Nickel (II) ion forms many stable complexes as predicted by the Irving Williams series. This experiment is about preparation and stereochemistry of nickel phosphine complexes. The nickel phosphine complexes, which were prepared are NiBr2(PPh3)2 and NiBr2(PCy3)2. The first part of the experiment is to prepare the nickel complexes. After preparing nickel phosphine complexes NiBr2 (PPh3)2 and NiBr2 (PCy3)2, the complexes have been analyzed for structural determination. The complexes were analyzed by the Magnetic Moments of solids-The Johnson Matthey Balance, UV-visible (electronic spectra), Infrared spectra (normal range) and Far-infrared spectra (which were supplied in the practical booklet).

The sets of bands in the IR and UV – spectra are the same specific a characteristic of a substance, like a person’s fingerprint. According to these spectra, the substance it can be identified if its vibrational spectrum is already known. In addition, by IR and UV –spectra determine the symmetry and structure of unexplored molecules. Frequencies the main vibrations found from the spectra are necessary for calculating thermodynamic properties of substances. Measuring the intensity of bands in the spectra allows you to quantitative analysis, study chemical equilibria and kinetics of chemical reactions, monitor the progress of technological processes. Nickel (II) ion forms many stable complexes. This work is devoted to the preparation and study of the stereochemistry of nickelphosphine complexes. We obtained nickelphosphine complexes NiBr2(PPh3)2; NiBr2(PCy3)2, and analysed to determine the structure. We studied the magnetic moments of solids from the following spectra in UV-visible (electronic spectra), infrared spectrum (normal range) and far infrared spectrum.

The article describes the results of the study of changes in the concentration of total protein and its fractions in the age range from 16 to 60 years. Concentrations of total protein and its fractions were studied in several age groups formed according to age periodization. Blood donors were the subjects. Biochemical blood analysis was performed using an automatic analyzer. Total protein, albumin and globulin fractions in blood serum were studied. According to the results of the study, it was found that there were age-related differences in some of the studied biochemical components. Mainly age differences were noted in the transition from adolescence to adulthood, the first period. There were no statistically significant differences between the subjects of adolescence and adulthood, the second period. Thus, age-related changes in total protein and its fractions in blood serum were largely absent in the age interval from 16 to 60 years.