Neutron diffraction measurements of mixtures of TiCl4/SiCl4and TiCl4/SnCl4liquids have been made using the total scattering spectrometer of the Harwell Electron Linac. The highQ-value (5–20 Å-1) data exhibit a beat effect and have been analysed in terms of summed molecular form factors. The bond-length parameters are found to be in good agreement with other values and confirm the treatment adopted in the analysis of the data for the pure liquids.