Bariumstannat‐Pulver durch hydrothermale Synthese und durch Thermolyse von Bariumzinn(IV)‐glykolaten. Synthese und Struktur von [Ba(C2H6O2)4][Sn(C2H4O2)3] und [Ba(C2H6O2)2][Sn(C2H4O2)3]·CH3OH |
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Authors: | Lothar J ger,Volker Lorenz,Thomas Mü ller,Hans‐Peter Abicht,Michael R ssel,Helmar G rls |
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Affiliation: | Lothar Jäger,Volker Lorenz,Thomas Müller,Hans‐Peter Abicht,Michael Rössel,Helmar Görls |
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Abstract: | Barium Stannate Powders from Hydrothermal Synthesis and by Thermolysis of Barium‐Tin(IV)‐Glycolates. Synthesis and Structure of [Ba(C2H6O2)4][Sn(C2H4O2)3] and [Ba(C2H6O2)2][Sn(C2H4O2)3]·CH3OH The hydrothermal reaction as well as the microwave assisted hydrothermal reaction of SnO2·aq with barium hydroxide gives Ba[Sn(OH)6] ( 1 ) as powder with bar like particles. Compound 1 of the same morphology can also be isolated from a hydrothermal reaction of [Ba(C2H6O2)4][Sn(C2H4O2)3] ( 3 ). The reaction of SnO2·aq with Ba(OH)2·8H2O in ethylene glycol yields the glycolate [Ba(C2H6O2)4][Sn(C2H4O2)3] ( 3 ), which forms in methanol the solvate [Ba(C2H6O2)2][Sn(C2H4O2)3]·CH3OH ( 4 ). Compounds 1 , 3 and 4 react at different temperatures to BaSnO3 ( 2 ) consisting of powders with different morphologies; because of the grain size of the resulting powders compounds 3 and 4 are suitable as precursor for the fabrication of corresponding ceramics. |
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Keywords: | Hydrothermal synthesis Tin(IV) glycolate Barium stannate Crystal structure |
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