InhaltsubersichtEs gelang erstmals, Einkristalle der monoklinen B-Form von Tb,O, darzustellen. Einc Rontgenstrukturuntersuchung zeigt, dal3 B -Tb,O, in der Raumgruppe C& -CC2/m kristallisiert und mit R--Sm,O, isotyp ist.
SummaryWe succeeded for the fird time in preparing single crystals of monoclinic Tb,O,. The investigation of the single crystals by means of X-rays leads to the space group C;,-C2/m. R-Tb,O, is isotypic with B-Sm,O,.
Anhand von Einkristalldaten [96 h0l, MoKα; R = R′ = 0,104] wurde bei NaInO2 z0 0,267 (hexagonale Aufstellung) bestimmt, entsprechend InO = 2.155 Å (6×). NaInO2 bildet mit Na2SnO3 = Na(Na1/3Sn2/3)O2 Mischkristalle, deren Existenzbereich bei 2 Darstellungstemperaturen [700°, 1000°C] annähernd bestimmt wurde.
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