查看“︁高锝酸铵”︁的源代码

{{NoteTA
|G1 = Chemistry
}}
{{Chembox
| ImageFile  = Ammoniumpertechnetat.png
|ImageFile2 = Ammonium pertechnetate.jpg
| Section3={{Chembox Structure
| CrystalStructure  = [[四方晶系]]
| SpaceGroup      = I41/a(No.88)
| LattConst_a = 577.5&nbsp;[[皮米|pm]]
| LattConst_c= 1325.2&nbsp;pm
}}
| Section1={{Chembox Identifiers
| CASNo         = 34035-97-7
| CASNo_Ref = {{cascite|correct|CAS}}
| PubChem         = 9577286
| ChemSpider      = 7851725
| SMILES = [NH4+].[O-][Tc](=O)(=O)=O
}}
| Section2={{Chembox Properties
| Formula    = NH<sub>4</sub>TcO<sub>4</sub>
| Appearance    = 白色固体<ref name="The Radiochemistry of Technetium">{{Literatur |Autor=Edward Anders |Titel=The Radiochemistry of Technetium |Auflage=3021 |Verlag=National Academies |Datum=1960 |Seiten=4}}</ref>
| MolarMass    = 179.94
| Dichte          = 
| MeltingPt    = 325&nbsp;°C{{sfn|Schwochau|2008|p=129}}
| Melting_notes=分解
| BoilingPt      = 
| Solubility     = 可溶<ref name="The Radiochemistry of Technetium" />
}}
| Section8={{Chembox Related
|OtherCations=[[高锝酸钠]]<br>[[高锝酸钾]]
| OtherAnions=[[高锰酸铵]]<br>[[高铼酸铵]]
}}
}}

'''高锝酸铵'''，化学式 NH<sub>4</sub>TcO<sub>4</sub> 是[[高锝酸]] HTcO<sub>4</sub>的[[铵]][[盐 (化学)|盐]]。

== 性质 ==
=== 物理性质 ===
高锝酸铵是[[四方晶系]]，空间群 I41/a，[[晶格参数]]为 a&nbsp;= 577.5&nbsp;[[皮米|pm]] 和 c&nbsp;= 1325.2&nbsp;pm （25&nbsp;°C）。<ref>{{cite journal | last=Faggiani | first=R. | last2=Gillespie | first2=R. J. | last3=Lock | first3=C. J. L. | last4=Pocé | first4=J. | title=The structure of ammonium pertechnetate at 295, 208 and 141 K | journal=Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry | volume=36 | issue=2 | date=1980-02-01 | issn=0567-7408 | doi=10.1107/S0567740880002993 | pages=231–233}}</ref>

=== 化学性质 ===
高锝酸铵会和无水[[氟化氢]]反应，形成[[高锝酰氟]] TcO<sub>3</sub>F。<ref>{{cite journal | last=Binenboym | first=J. | last2=El-Gad | first2=U. | last3=Selig | first3=H. | title=Reaction of ammonium pertechnetate with anhydrous hydrogen fluoride. Vibrational spectra of pertechnetyl fluoride | journal=Inorganic Chemistry | volume=13 | issue=2 | date=1974-02-01 | issn=0020-1669 | doi=10.1021/ic50132a015 | pages=319–321}}</ref>

高锝酸铵被[[氢气]][[还原]]时，会形成[[锝]]金属。这个反应要在600&nbsp;°C 下反应，温度太低会产生[[二氧化锝]]。{{sfn|Schwochau|2008|p=94}}

:<chem>NH4TcO4 + 2 H2 -> Tc + 4 H2O + 1/2 N2</chem>

它在[[三氟甲磺酸]]和[[三氟甲磺酸酐]]的混合物中经黄色的三氟甲磺酸高锝酰和紫色的六价锝中间体，最终被还原为绿色的(NH<sub>4</sub>)<sub>2</sub>[TcO(OTf)<sub>5</sub>]，这一化合物在潮湿空气中缓慢水解，得到(NH<sub>4</sub>)<sub>4</sub>[{TcO(TcO<sub>4</sub>)<sub>4</sub>}4]·10H<sub>2</sub>O。<ref>{{cite journal | last=Zegke | first=Markus | last2=Grödler | first2=Dennis | last3=Roca Jungfer | first3=Maximilian | last4=Haseloer | first4=Alexander | last5=Kreuter | first5=Meike | last6=Neudörfl | first6=Jörg M. | last7=Sittel | first7=Thomas | last8=James | first8=Christopher M. | last9=Rothe | first9=Jörg | last10=Altmaier | first10=Marcus | last11=Klein | first11=Axel | last12=Breugst | first12=Martin | last13=Abram | first13=Ulrich | last14=Strub | first14=Erik | last15=Wickleder | first15=Mathias S. | title=Ammonium Pertechnetate in Mixtures of Trifluoromethanesulfonic Acid and Trifluoromethanesulfonic Anhydride | journal=Angewandte Chemie International Edition | volume=61 | issue=3 | date=2022-01-17 | issn=1433-7851 | pmid=34752692 | pmc=9299680 | doi=10.1002/anie.202113777}}</ref>

== 参考资料 ==
{{reflist}}

==参考书目==
* {{cite book | last=Schwochau | first=Klaus | title=Technetium | publisher=John Wiley & Sons | date=2008-11-21 | isbn=3-527-61337-4|ref=harv}}

{{锝化合物}}
{{铵化合物}}

[[Category:铵盐]]
[[Category:高锝酸盐]]