Röntgenstrukturuntersuchung des flüssigen Silicium‐, Germanium‐ und Zinntetrachlorids. Ein Beitrag zur Frage einer gemeinsamen Flüssigkeitsstruktur I. Streuexperimente an den reinen Komponenten und ihren binären Mischungen

Abstract

AbstractX‐ray diffraction experiments have been performed for liquid tetrachlorides SiCl4, GeCl4, SnCl4 and special binary mixtures including isoelectronic species. They were analysed to yield experimental evidence regarding the question of a common liquid structure that is essential for separating partial structure factors by isomorphic substitution.—The scattering intensity obtained at 20°C using CuKα and AgKα radiation was corrected for background, absorption, polarisation, multiple scattering, Compton scattering, and for the wavelength distribution of the incident beam. The intramolecular contribution calculated from best fit molecular parameters was separated from the coherent differential cross section. The molecular model parameters compare excellently with those of the literature.—Based on the comparison of the properties of the intermolecular scattering functions, the experimental results point to a common type of short range order but establish that the structure factors are affected by the different intramolecular bond lengths.