Search results

1

Local Structure and Molecular Correlations in Liquid Naphthalene

100%

Bochyński Z., Dejneka L.

Acta Physica Polonica A

|

1998

|

vol. 93

|

issue 3

471-478

EN

X-ray diffraction studies of liquid naphthalene and, for the sake of comparison, of liquid benzene and diphenyl were performed. The results permitted the determination of the intermolecular distances and the packing coefficient. A comparison of the structures of liquid naphthalene, benzene, and diphenyl shows that in benzene and diphenyl 3 coordination spheres of molecular ordering can be distinguished in the range up to 18 Å, while in naphthalene only two in the range up to 15 Å. Analysis of the space packing in (benzene, naphthalene, and diphenyl) all liquids studied has proved its substantial increase with increasing volume of their molecules.

2

Molecular Correlations in Liquid mono- and Dlichloroalkanes

100%

Bochyński Z., Drozdowski H.

Acta Physica Polonica A

|

1996

|

vol. 89

|

issue 4

547-554

EN

This paper reports results of the X-ray diffraction structural studies of a series of liquid monochloroalkanes (chlorohexane, 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 Å, 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 similar. Correlations were found between certain physical and chemical properties of the studied compounds and the spatial arrangement of their molecules.

3

Structure and Molecular Correlation of Liquid Alkanes

100%

Bochyński Z., Drozdowsκi H.

Acta Physica Polonica A

|

1995

|

vol. 88

|

issue 6

1089-1096

EN

The paper reports structural investigations of a series of liquid alkanes, from n-C_{6}H_{14} (n-hexane) to n-C_{16}H_{34} (n-hexadecane), differing by two methyl groups (CH_{2})_{2}, n-C_{20}H_{42} (n-eicosane) and n-C_{30}H_{62} (n-triacontane) performed in temperatures from 20°C to 70°C. The average angular distribution of intensity was determined by diffraction of monochromatic X-ray radiation Mo K_{α}, λ = 0.7107 Å and the functions of radial distribution of electron density were calculated for the studied compounds. Mean structural parameters including distances between molecules and atoms, coordination numbers as well as correlation parameters were obtained. The suitability of the method for structural studies of n-alkanes with the number of carbon atoms from 6 to 30 is discussed.

Refine search results

3 Acta Physica Polonica A

1 1998

1 1996

1 1995

3 Bochyński Z.

1 Dejneka L.

1 Drozdowski H.

1 Drozdowsκi H.

Local Structure and Molecular Correlations in Liquid Naphthalene

Molecular Correlations in Liquid mono- and Dlichloroalkanes

Structure and Molecular Correlation of Liquid Alkanes