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氧化铊

氧化铊
别名 三氧化铊,倍半氧化铊
识别
CAS号 1314-32-5  checkY
PubChem 9804116
ChemSpider 7979876
SMILES
 
  • [O-2].[O-2].[O-2].[Tl+3].[Tl+3]
EINECS 215-229-3
性质[1]
化学式 Tl2O3
摩尔质量 456.76 g/mol g·mol⁻¹
外观 暗棕色固体
密度 10.19 g/cm3,固体 (22 °C)
熔点 717 °C(990 K)
沸点 875 °C(1148 K) (分解)
溶解性 不可溶
磁化率 +76.0·10−6 cm3/mol
结构
晶体结构 立方晶系, cI80[2]
空间群 Ia-3, No. 206
危险性
欧盟分类 未列出
NFPA 704
0
4
0
 
致死量或浓度:
LD50中位剂量
44 mg/kg (大鼠口服)
相关物质
其他阳离子 氧化硼
氧化铝
氧化镓
氧化铟
相关化学品 氧化亞铊
氢氧化铊
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

氧化铊,又称氧化高铊是一种由组成的化合物。 它存在于自然界中,以稀有矿物褐铊矿英语avicennite的形式存在。[3] 它的结构类似 Mn2O3 ,有着方铁锰矿英语bixbyite的结构 。Tl2O3 是具有高电导率的金属性物质,并且是一种 n型半导体,可能在太阳能电池中具有潜在的用途。 [4] 一种生产 Tl2O3MOCVD是已知的。[5] 氧化铊的任何实际使用都必须始终考虑到铊的有毒性质。氧化铊与接触都会形成有毒的铊化合物。

制备

[编辑]

它是通过铊与氧气或过氧化氢在碱性铊(I)溶液中反应生成的。它也可以通过在氢氧化钾水溶液中用氯将硝酸亚铊氧化而成。 [6]

参考资料

[编辑]
  1. ^ Weast, Robert C. (编). CRC Handbook of Chemistry and Physics 62nd. Boca Raton, FL: CRC Press. 1981: B156. ISBN 0-8493-0462-8. .
  2. ^ Otto H.H.; Baltrasch R.; Brandt H.J. Further evidence for Tl3+ in Tl-based superconductors from improved bond strength parameters involving new structural data of cubic Tl2O3. Physica C. 1993, 215 (1-2): 205. doi:10.1016/0921-4534(93)90382-Z. 
  3. ^ http://www.handbookofmineralogy.org/pdfs/avicennite.pdf页面存档备份,存于互联网档案馆) Handbook of Mineralogy
  4. ^ Phillips R. J.; Shane M. J.; Switzer J. A. Electrochemical and photoelectrochemical deposition of Thallium(III) Oxide thin films. Journal of Materials Research. 1989, 4 (04): 923. doi:10.1557/JMR.1989.0923. 
  5. ^ D. Berry; R. T. Holm; R. L. Mowery; N. H. Turner & M. Fatemi. Thallium(III) Oxide by Organometallic Chemical Vapor Deposition. Chemistry of Materials. 1991, 3 (1): 72–77. doi:10.1021/cm00013a019. 
  6. ^ Georg Brauer; Handbuch der präparativen anorganischen Chemie, Band 2, S.884; ISBN 3-432-87813-3 (in German)
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氧化铊
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