This paper reports results of the X-ray diffraction structural studies of a series of liquid monochloroalkanes (chIorohexane, chlorooctane, chlorodecane, chlorododecane) and dichloroalkanes (1, 6-dichlorohexane, 1,8-dichlorooctane, 1,10-dichlorodecane, 1,12-dichlorododecane) performed at 20 and 40° C. From the X-ray diffraction patterns, obtained using Mo K α radiation of the wavelength λ = 0.7107 A, the mean angular distributions of intensities were determined. Then, the functions of radial distributions of electron density were numerically found using Fourier analysis. The mean structural parameters of the studied liquids (the inter-and intramolecular distances, the radii of coordination spheres, the coordination numbers) and the local arrangement of their molecules were established. The intermolecular arrangements in the studied liquid mono-and dichloroalkanes were found to be simiłar. Correlations were found between certain physical and chemical . properties of the studied compounds and the spatial arrangement of their molecules.

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