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NaGe—High-Pressure Formation of the NaPb-Type Structure
Angewandte Chemie International Edition in English, 24 (6): 500--501 (1985)
DOI: 10.1002/anie.198505001
Аннотация
An increase in coordination numbers from 6:6 to 7:7 accompanies the conversion of the normal-pressure modification of NaGe, the only compound of the NaGe type, into a NaPb-type modification under pressure. This increase is in turn accompanied by an increase in density of ca. 5%. The Ge substructure, consisting of isolated tetrahedra, remains unaltered. Large changes in electrical properties are to be expected in a modification with 8:8 coordination, which could be obtained at still higher pressures.
