[en] Present article is devoted to correlation of paramagnetic resonance data and quantum chemical calculations for possible conformations of enin triols. Factors leading to formation of intramolecular hydrogen bonds with using paramagnetic resonance have been revealed. The quantum chemical calculations of obtained conformations has been conducted.

[en] The improved system of basis functions permitting to decrease the error of solid NMR spectra decay up to noise, including polymer spectra is suggested and tested

[en] Heterogeneity and possibility of selection of common grain wheat using NMR-parameters in the value of echo signal amplitude at τ=80μs in crossings imitating selection program on the quality of crops is estimated

[en] The article has describe the synthesis of 2-amino-5 methyl-7-oxo-7 H-1,3,4,-triadiazol [3,2-a] pyrimidine using 2-bromo-5 methyl-7-oxo-7 H-1,3,4-thiadiazole [3,2-a] pyrimidine as a intermediate

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[en] Present article considers the coherent states of density matrix qubit for N-level quantum system. This article in general terms discusses the coherent states of qubit matrix for level quantum system in SU (2) and SU (3) and SU (N), which are usually used in quantum information processing. (author)

[en] Present article is devoted to synthesis of propane -1,2-diol ethers of cholanic acids. The synthesis of propane-1,2-diol esters of a number of cholanic acids has been carried out, their structure has been defined by means of infrared and paramagnetic resonance spectroscopy methods. (author)

No abstract available

No abstract available

[en] Ligand redistribution in the WSF₄-WSCl₄-MeCN and WSF₄-WOCl₄-MeCN systems is studied by the ¹⁹F NMR method. The formation of neutral tungsten thiofluorochloride complexes of the WSFsub(4-n)Clsub(n)xMeCN (n=1-3) composition is established in the acetonitrile solution. The formation of mixed compounds is less preferable at ligand redistribution between WSF₄ and WSCl₄. Tungsten oxofluorochloride complexes were detected besides tungsten thiofluorochloride ones in the WSF₄-WOCl₄ system. Comparing integral curves of the ¹⁹F NMR spectra at various ratios of initial components showed almost equal distribution of fluorine ions between W=O and W=S groups. Difference in multiple-bound ligands is likely to influence insignificantly the process of halogen atom redistribution in octahedral tungsten complexes