<p><b>五碘化鉭</b>是一種無機化合物，化學式 Ta<sub>2</sub>I<sub>10</sub>。它是黑色的，對水分敏感的抗磁性固體。
</p>


<h2><span id=".E5.88.B6.E5.A4.87.E5.92.8C.E7.BB.93.E6.9E.84"></span><span id="制备和结构">製備和結構</span></h2>
<p>五溴化鉭可以由鉭和過量的碘化合而成。  
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {{2Ta}+ 5I2 -&gt; {Ta2I10}}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\ce {{2Ta}+ 5I2 -&gt; {Ta2I10}}}}</annotation>
  </semantics></math></span></span></dd></dl><p>它也可以由五氧化二鉭和三碘化鋁化合而成：</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {{3Ta2O5}+ 10AlI3 -&gt; {3Ta2I10}+ 5Al2O3}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\ce {{3Ta2O5}+ 10AlI3 -&gt; {3Ta2I10}+ 5Al2O3}}}</annotation>
  </semantics></math></span></span></dd></dl><p>如對許多Nb和Ta的五鹵化物所觀察到的，其結構已經通過X射線晶體學驗證，是雙八面體形分子構型。</p>
<h2><span id=".E5.8F.8D.E5.BA.94"></span><span id="反应">反應</span></h2>
<p>五碘化鉭在乙腈中可以和五苯酚鉭發生配體交換反應，生成Ta(OC<sub>6</sub>H<sub>5</sub>)<sub>n</sub>I<sub>5－n</sub>，其中Ta(OC<sub>6</sub>H<sub>5</sub>)I<sub>4</sub>·CH<sub>3</sub>CN已被分離出來；它和<span data-orig-title="五乙醇钽" data-lang-code="en" data-lang-name="英語" data-foreign-title="Tantalum(V) ethoxide"><span>五乙醇鉭</span></span>在乙腈中反應，可以得到TaOI<sub>3</sub>·CH<sub>3</sub>CN。</p><p>它和金屬鉭粉、五氯化鉭在450 °C反應，可以得到TaI<sub>2</sub>Cl<sub>2</sub>它在450 °C以上和氧氣反應，可以得到五氧化二鉭。它可以被鋅或鎘在高溫下還原為金屬鉭。</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {{Ta2I10}+ {5Zn}-&gt; {5ZnI2}+ {2Ta}}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\ce {{Ta2I10}+ {5Zn}-&gt; {5ZnI2}+ {2Ta}}}}</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E5.8F.82.E8.80.83.E8.B5.84.E6.96.99"></span><span id="参考资料">參考資料</span></h2>
<h2><span id=".E6.8B.93.E5.B1.95.E9.98.85.E8.AF.BB"></span><span id="拓展阅读">拓展閱讀</span></h2>
<p><small>
</small></p><small><ul><li><cite class="citation journal">Fabio Marchetti, Guido Pampaloni. Interaction of niobium and tantalum pentahalides with O-donors: coordination chemistry and activation reactions. Chem. Commun. 2012, <b>48</b> (5): 635–653 <span> [<span>2020-12-10</span>]</span>. <span title="國際標準連續出版物號">ISSN 1359-7345</span>. <span title="數位物件識別號">doi:10.1039/C1CC14592D</span> <span title="連接到英語網頁">（英語）</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E4%BA%94%E7%A2%98%E5%8C%96%E9%92%BD&amp;rft.atitle=Interaction+of+niobium+and+tantalum+pentahalides+with+O-donors%3A+coordination+chemistry+and+activation+reactions&amp;rft.au=Fabio+Marchetti%2C+Guido+Pampaloni&amp;rft.date=2012&amp;rft.genre=article&amp;rft.issn=1359-7345&amp;rft.issue=5&amp;rft.jtitle=Chem.+Commun.&amp;rft.pages=635-653&amp;rft.volume=48&amp;rft_id=http%3A%2F%2Fxlink.rsc.org%2F%3FDOI%3DC1CC14592D&amp;rft_id=info%3Adoi%2F10.1039%2FC1CC14592D&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal"><span> </span></span></li>
<li><cite class="citation journal">Xiuquan Zhou, Christophe P. Heinrich, Martin Kluenker, Stephanie Dolique, Derek L. Mull, Cora Lind. Non-hydrolytic sol–gel synthesis of tantalum sulfides. Journal of Sol-Gel Science and Technology. 2014-03, <b>69</b> (3): 596–604 <span> [<span>2020-12-10</span>]</span>. <span title="國際標準連續出版物號">ISSN 0928-0707</span>. <span title="數位物件識別號">doi:10.1007/s10971-013-3262-8</span> <span title="連接到英語網頁">（英語）</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E4%BA%94%E7%A2%98%E5%8C%96%E9%92%BD&amp;rft.atitle=Non-hydrolytic+sol%E2%80%93gel+synthesis+of+tantalum+sulfides&amp;rft.au=Xiuquan+Zhou%2C+Christophe+P.+Heinrich%2C+Martin+Kluenker%2C+Stephanie+Dolique%2C+Derek+L.+Mull%2C+Cora+Lind&amp;rft.date=2014-03&amp;rft.genre=article&amp;rft.issn=0928-0707&amp;rft.issue=3&amp;rft.jtitle=Journal+of+Sol-Gel+Science+and+Technology&amp;rft.pages=596-604&amp;rft.volume=69&amp;rft_id=http%3A%2F%2Flink.springer.com%2F10.1007%2Fs10971-013-3262-8&amp;rft_id=info%3Adoi%2F10.1007%2Fs10971-013-3262-8&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal"><span> </span></span></li></ul></small><small></small><p><small></small>
</p>
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**五碘化鉭**是一種無機化合物，化學式 Ta2I10。它是黑色的，對水分敏感的抗磁性固體。

## 製備和結構

五溴化鉭可以由鉭和過量的碘化合而成。

　
: ${\ce {{2Ta}+ 5I2 -> {Ta2I10}}}$

它也可以由五氧化二鉭和三碘化鋁化合而成：

　
: ${\ce {{3Ta2O5}+ 10AlI3 -> {3Ta2I10}+ 5Al2O3}}$

如對許多 Nb 和 Ta 的五鹵化物所觀察到的，其結構已經通過 X 射線晶體學驗證，是雙八面體形分子構型。

## 反應

五碘化鉭在乙腈中可以和五苯酚鉭發生配體交換反應，生成 Ta (OC6H5)nI5－n，其中 Ta (OC6H5)I4·CH3CN 已被分離出來；它和五乙醇鉭在乙腈中反應，可以得到 TaOI3·CH3CN。

它和金屬鉭粉、五氯化鉭在 450 °C 反應，可以得到 TaI2Cl2 它在 450 °C 以上和氧氣反應，可以得到五氧化二鉭。它可以被鋅或鎘在高溫下還原為金屬鉭。

　
: ${\ce {{Ta2I10}+ {5Zn}-> {5ZnI2}+ {2Ta}}}$

## 參考資料

## 拓展閱讀

* Fabio Marchetti, Guido Pampaloni. Interaction of niobium and tantalum pentahalides with O-donors: coordination chemistry and activation reactions. Chem. Commun. 2012, **48** (5): 635–653 [2020-12-10]. ISSN 1359-7345. doi:10.1039/C1CC14592D （英語）.
* Xiuquan Zhou, Christophe P. Heinrich, Martin Kluenker, Stephanie Dolique, Derek L. Mull, Cora Lind. Non-hydrolytic sol–gel synthesis of tantalum sulfides. Journal of Sol-Gel Science and Technology. 2014-03, **69** (3): 596–604 [2020-12-10]. ISSN 0928-0707. doi:10.1007/s10971-013-3262-8 （英語）.
14693-81-3