Neutron diffraction study of carbontetrachloride, siliciumtetrachloride, titaniumtetrachloride, and tintetrachloride in the liquid state at 295 K

Neutron diffraction data on the molecular liquids CCl4, SiCl4, TiCl4, and sSnCl4 have been collected in an interval of the scattering parameter, kappa = 4πsintheta/lambda, extending from 0.4 A-1 to 13.3 A-1. The neutron wavelength was 0.878 A. The statistical accuracy of the data was better than 0.25 percent, and for titanium and tin tetrachloride a factor of two better. The intermolecular contributions to the diffracted intensity is dealt with in two ways: first a comparison in kappa- and in r-space between the experimental scattering and the corresponding distribution calculated from a model of randomly oriented molecules consisting of hard spheres. Furthermore, the regions in kappa- and in r-space can be identified where positional and where orientational correlations are predominent