Abstract
The structures of molten MgCl2 and of molten MnCl2 have been investigated by applying the technique of neutron diffraction to isotopically enriched samples. For MgCl2, the three partial structure factors and the three pair correlation functions have been extracted from the experimental data. For MnCl2, the total structure factor and total pair correlation function were derived. Since manganese has a negative scattering length, a single experiment on natural MnCl2 was sufficient to extract the Mn-Cl interionic separation and coordination number. It is shown that MnCl2 and MgCl2 are structurally similar in the liquid phase. It is shown that the structure of both melts is significantly different from that of molten ZnCl2.
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