查看“︁高锝酸”︁的源代码

{{NoteTA
|G1 = Chemistry
}}
{{Chembox
| ImageFile =Pertechnetic_acid_3D_ball.png
| IUPACName = Pertechnetic acid
| Section1 = {{Chembox Identifiers
|  PubChem = 11805084
|   PubChem_Ref = {{Pubchemcite|correct|pubchem}}
|  ChemSpiderID = 9979749
|   ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
|  SMILES = O[Tc](=O)(=O)=O
|  StdInChI = 1S/H2O.3O.Tc/h1H2;;;;/q;;;;+1/p-1
|   StdInChI_Ref = {{stdinchicite|correct|chemspider}}
|  StdInChIKey = UTQISYNNAQMRBN-UHFFFAOYSA-M
|   StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
|  CASNo = 14332-45-7
|  CASNo_Ref = {{cascite|correct|CAS}}
|  CASNo2 = 41159-96-0
|  CASNo2_Ref = {{cascite|correct|CAS}}
|  CASNo2_Comment = <sup>99</sup>Tc
}}
| Section2 = {{Chembox Properties
|  H = 1
|  O = 4
|  Tc = 1
| Appearance=粉红色溶液<ref name="Nuclear and Radiation Chemistry">{{Literatur|Verlag=Krishna Prakashan Media|Titel=Nuclear and Radiation Chemistry|Seiten=140|ISBN=8185842639}}</ref>或深红色晶体<ref name="Technetium: Chemistry and Radiopharmaceutical Applications">{{Literatur|Autor=Klaus Schwochau|Titel=Technetium: Chemistry and Radiopharmaceutical Application|Verlag=John Wiley & Sons|Datum=2008-11|Seiten=127|ISBN=3527613374}}</ref>
|pKa=0.32 (25&nbsp;°C)<ref name="Journal of Radioanalytical and Nuclear Chemistry">{{Literatur|Autor=T. Omori, K. Asahina, H. Suganuma|Titel=Mechanism of the solvent extraction of pertechnetate with tetraphenylarsonium chloride|Sammelwerk=Journal of Radioanalytical and Nuclear Chemistry|Datum=1995-03|Seiten=99-104|DOI=10.1007/BF02035989}}</ref>
}}
}}

'''高锝酸'''（HTcO<sub>4</sub>）是一种锝的[[含氧酸]]。它可以由[[七氧化二锝]]和水或[[氧化性酸]]（[[硝酸]]、[[浓硫酸]]、[[王水]]等）反应制得。{{sfn|Schwochau|2000|p=127}}它是一种暗红色易[[潮解]]的固体。它是一种强酸，很容易给出质子{{sfn|Schwochau|2000|p={{page needed}}}}，使得在水溶液中几乎以[[高锝酸根]]的形式存在。

如果使用一种非常强的酸（例如浓硫酸）当作溶剂，可以得到高锝酸未被质子化的形态，以 TcO<sub>3</sub>(OH)(H<sub>2</sub>O)<sub>2</sub> 二[[水合物]]的形式存在。<ref>{{cite journal|vauthors=Poineau F, Weck PF, German K, Maruk A, Kirakosyan G, Lukens W, Rego DB, Sattelberger AP, Czerwinski KR|title=Speciation of heptavalent technetium in sulfuric acid: structural and spectroscopic studies|journal=Dalton Transactions|year=2010|volume=39|issue=37|pages=8616–8619|doi=10.1039/C0DT00695E|url=http://radchem.nevada.edu/docs/pub/tc%20in%20h2so4%20%28dalton%29%202010-08-23.pdf|pmid=20730190|access-date=2021-05-01|archive-date=2017-03-05|archive-url=https://web.archive.org/web/20170305152213/http://radchem.nevada.edu/docs/pub/tc%20in%20h2so4%20%28dalton%29%202010-08-23.pdf|dead-url=yes}}</ref>

== 制备 ==
由[[七氧化二锝]]溶于[[水]]而成。<ref name="Technetium: Chemistry and Radiopharmaceutical Applications" />

<chem>Tc2O7 + H2O -> 2 HTcO4</chem>

== 性质==
高锝酸的[[解离常数]]为 2.09&nbsp;±&nbsp;0.18（25&nbsp;°C）。<ref name="Journal of Radioanalytical and Nuclear Chemistry" />这种酸对应的[[盐 (化学)|盐]]，[[高锝酸盐]]比[[高铼酸盐]]更能溶于水。<ref name="Nuclear and Radiation Chemistry" />

== 参考资料 ==
{{Reflist}}

==参考书目==
*{{cite book|url = http://books.google.com/books?id=BHjxH8q9iukC&pg=PP1|author = Schwochau, K.|title = Technetium: chemistry and radiopharmaceutical applications|publisher = Wiley-VCH|year = 2000|isbn = 3527294961|ref = CITEREFSchwochau2000|access-date = 2011-06-18|archive-date = 2013-10-12|archive-url = https://web.archive.org/web/20131012233123/http://books.google.com/books?id=BHjxH8q9iukC&pg=PP1|dead-url = no}}

{{锝化合物}}
{{无机酸}}

[[Category:无机酸|锝]]
[[Category:高锝酸盐]]
[[Category:缺少物质图片的化学品条目]]


{{inorganic-compound-stub}}