For faster navigation, this Iframe is preloading the Wikiwand page for 氟化钪.

氟化钪

氟化钪
IUPAC名
Scandium(III) fluoride
别名 三氟化钪
氟化钪(III)
识别
CAS号 13709-47-2  checkY
PubChem 83678
SMILES
 
  • F[Sc](F)F
InChI
 
  • 1S/3FH.Sc/h3*1H;/q;;;+3/p-3
EINECS 237-555-4
RTECS VQ8930000
性质
化学式 ScF3
摩尔质量 101.95112 g/mol g·mol⁻¹
外观 白色粉末
密度 2.53 g/cm3
熔点 1,552 °C(1,825 K)[1]
沸点 1,607 °C(1,880 K)[1]
结构
晶体结构 Cubic, Pm3m
空间群 Pm3m, No. 221
危险性
NFPA 704
0
2
0
 
相关物质
其他阴离子 氯化钪
溴化钪
碘化钪
其他阳离子 氟化钇
氟化镧
相关化学品 硫酸钪
硝酸钪
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

氟化钪是一种离子化合物,化学式为ScF
3
。它有着三氟化钒(VF3)的结构,与二氧化铼的ReO3结构单元类似,有六配位的金属离子。它微溶于水,在过量氟化物的存在下形成ScF3−
6
而可溶。[1]

制备

的反应可以生成ScF3[2]氟化氢铵在高温处理钪钇石英语thortveitite也能得到氟化钪。[3]

Sc2O3 + NH4HF2 → 2 ScF3 + 6 NH4F + 3 H2O

性质

氟化钪有着负热膨胀效应英语negative thermal expansion这一不寻常的性质,即它在加热的时候收缩。[4]

参考文献

  1. ^ 1.0 1.1 1.2 Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier, ISBN 0-12-352651-5.
  2. ^ S.A.Cotton, Scandium, Yttrium and the Lanthanides: Inorganic and Coordination Chemistry, Encyclopedia of Inorganic Chemistry, 1994, John Wiley & Sons, ISBN 0-471-93620-0.
  3. ^ Pradyot Patnaik, 2003, Handbook of Inorganic Chemicals, McGraw-Hill Professional, ISBN 0-07-049439-8.
  4. ^ Woo, Marcus. An incredible shrinking material: Engineers reveal how scandium trifluoride contracts with heat. Physorg. 7 November 2011 [8 November 2011]. (原始内容存档于2012-01-19). 
{{bottomLinkPreText}} {{bottomLinkText}}
氟化钪
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?