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五氧化二鏷

五氧化二鏷
IUPAC名
Protactinium(V) oxide
识别
CAS号 12036-75-8
SMILES
 
  • O=[Pa](=O)O[Pa](=O)=O
InChI
 
  • 1S/10O.4Pa
InChIKey YHCILLCTPZINHI-UHFFFAOYSA-N
性质
化学式 Pa
2
O
5
摩尔质量 542.0688 g·mol⁻¹
外观 白色不透明晶體
密度 10.96 g/cm3
结构
晶体结构 立方晶系
空间群 Fm3m, No. 225
危险性
GHS危险性符号
《全球化学品统一分类和标签制度》(简称“GHS”)中有毒物质的标签图案《全球化学品统一分类和标签制度》(简称“GHS”)中对人体有害物质的标签图案《全球化学品统一分类和标签制度》(简称“GHS”)中对环境有害物质的标签图案
主要危害 剧毒、有放射性
NFPA 704
0
4
0
 
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

五氧化二鏷是一種氧化物,化學式為Pa
2
O
5
,是白色不透明晶體,外觀和另一個氧化物——二氧化鏷有很大的不同,五氧化二鏷是白色而二氧化鏷是黑色。五氧化二鏷与氢气反应产生二氧化鏷。[1]

歷史

[编辑]

1927年,德国核化学家阿里斯蒂德·格罗斯英语Aristid von Grosse(Aristid von Grosse)制做出2毫克的五氧化二鏷[2]

制備

[编辑]

二氧化鏷和氫氣反應產生五氧化二鏷[1]是可逆反應。

Pa
2
O
5
+ H
2
→ 2PaO
2
+ H
2
O

在空氣中燃燒:

參考文獻

[编辑]
  1. ^ 1.0 1.1 Sellers, Philip A.; Fried, Sherman; Elson, Robert E.; Zachariasen, W. H. The Preparation of Some Protactinium Compounds and the Metal. Journal of the American Chemical Society. 1954, 76: 5935. doi:10.1021/ja01652a011. 
  2. ^ von Grosse, Aristid. Das Element 91; seine Eigenschaften und seine Gewinnung. Berichte der deutschen chemischen Gesellschaft. 1928, 61 (1): 233–245. doi:10.1002/cber.19280610137. 
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五氧化二鏷
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