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ChemInform Abstract: Synthesis and Structures of Type-I Clathrates: Rb6Na2Ge44.89(1), Cs6Na2Zn4Ge42 and Cs6.40(1)Na1.60(1)Ga8Ge38.
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Rb6Na2Ge44.89, Cs6Na2Zn4Ge42, and Cs6.40Na1.60Ga8Ge38 are prepared by solid state reaction of the elements in stoichiometric proportions (Ta container in evacuated quartz ampoules, 650 °C, 1—2 weeks).

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