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The structure of molten ZnCl2 has been investigated by applying the technique of neutron diffraction to isotopically enriched samples. The three partial structure factors relating to Zn-Zn, Cl-Cl and Zn-Cl correlations have been successfully extracted from the experimental data. It is concluded that the correct structural description of the melt is in terms of Zn2+ and Cl- ions rather than the range of complex ionic species which have earlier been proposed. It is further shown that specific chemical bonding effects associated with the Zn-Cl interaction make a very minor contribution to the structure.
Biggin et al. (Mon,) studied this question.