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The crystal structure of Li7Sn2 has been determined. It crystallizes orthorhombic, space group Cmmm–D19 2h, a = 9.80 ± 0.02 A, b = 13.80 ± 0.02 Å and c = 4.75 ± 0.01 Å, isotypic to Li7Ge2. The close relations to the structure of Li7Pb2 are shown.
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Frank et al. (1975) studied this question.
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