Alexander Missyul, Martin Kreuzer, Oleg Usoltsev, Maxim Arsentev, Mikhail Chislov
{"title":"三（草酸）铝酸锂及其水合物：结构、相互转化和热分解","authors":"Alexander Missyul, Martin Kreuzer, Oleg Usoltsev, Maxim Arsentev, Mikhail Chislov","doi":"10.1002/zaac.202400032","DOIUrl":null,"url":null,"abstract":"The double oxalates MI3[MIII(C2O4)3] possess rich crystallochemistry and can be used as precursors for various ceramic materials. The article discusses a case of Li3[Al(C2O4)3]. A series of previously unknown hydrates (Li3[Al(C2O4)3]·5.5H2O, Li3[Al(C2O4)3]·4H2O, Li3[Al(C2O4)3]·H2O) was found for this composition, their crystal structure and temperatures of mutual transformations determined. Transformation from Li3[Al(C2O4)3]·4H2O to Li3[Al(C2O4)3]·H2O was found to be accompanied by a change in the topology of the bonding network. Uniaxial negative thermal expansion was found for anhydrous Li3[Al(C2O4)3]. Thermal decomposition of Li3[Al(C2O4)3] was demonstrated to be a promising way to obtain precursors for aluminate ceramics.","PeriodicalId":23934,"journal":{"name":"Zeitschrift für anorganische und allgemeine Chemie","volume":"90 14","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Lithium tris(oxalato)aluminate and its hydrates: structure, mutual transformations and thermal decomposition\",\"authors\":\"Alexander Missyul, Martin Kreuzer, Oleg Usoltsev, Maxim Arsentev, Mikhail Chislov\",\"doi\":\"10.1002/zaac.202400032\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The double oxalates MI3[MIII(C2O4)3] possess rich crystallochemistry and can be used as precursors for various ceramic materials. The article discusses a case of Li3[Al(C2O4)3]. A series of previously unknown hydrates (Li3[Al(C2O4)3]·5.5H2O, Li3[Al(C2O4)3]·4H2O, Li3[Al(C2O4)3]·H2O) was found for this composition, their crystal structure and temperatures of mutual transformations determined. Transformation from Li3[Al(C2O4)3]·4H2O to Li3[Al(C2O4)3]·H2O was found to be accompanied by a change in the topology of the bonding network. Uniaxial negative thermal expansion was found for anhydrous Li3[Al(C2O4)3]. Thermal decomposition of Li3[Al(C2O4)3] was demonstrated to be a promising way to obtain precursors for aluminate ceramics.\",\"PeriodicalId\":23934,\"journal\":{\"name\":\"Zeitschrift für anorganische und allgemeine Chemie\",\"volume\":\"90 14\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-06-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Zeitschrift für anorganische und allgemeine Chemie\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1002/zaac.202400032\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift für anorganische und allgemeine Chemie","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/zaac.202400032","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Lithium tris(oxalato)aluminate and its hydrates: structure, mutual transformations and thermal decomposition
The double oxalates MI3[MIII(C2O4)3] possess rich crystallochemistry and can be used as precursors for various ceramic materials. The article discusses a case of Li3[Al(C2O4)3]. A series of previously unknown hydrates (Li3[Al(C2O4)3]·5.5H2O, Li3[Al(C2O4)3]·4H2O, Li3[Al(C2O4)3]·H2O) was found for this composition, their crystal structure and temperatures of mutual transformations determined. Transformation from Li3[Al(C2O4)3]·4H2O to Li3[Al(C2O4)3]·H2O was found to be accompanied by a change in the topology of the bonding network. Uniaxial negative thermal expansion was found for anhydrous Li3[Al(C2O4)3]. Thermal decomposition of Li3[Al(C2O4)3] was demonstrated to be a promising way to obtain precursors for aluminate ceramics.
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