<p><b>連二硫酸鎳</b>是一種無機化合物，為連二硫酸的鎳鹽，化學式為NiS<sub>2</sub>O<sub>6</sub>，可溶於水，可以形成綠色的水合物晶體。
</p>


<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>連二硫酸鎳可由硫酸鎳和連二硫酸鋇的複分解反應製得：
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\mathsf {NiSO_{4}+BaS_{2}O_{6}\ {\xrightarrow {}}\ NiS_{2}O_{6}+BaSO_{4}\downarrow }}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\mathsf {NiSO_{4}+BaS_{2}O_{6}\ {\xrightarrow {}}\ NiS_{2}O_{6}+BaSO_{4}\downarrow }}}</annotation>
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<p>連二硫酸鎳可溶於水、乙醇和甲醇。它可以形成綠色的六水合物三斜晶體，空間群P<u style="text-decoration: overline;">1</u>，晶胞參數a=0.643 nm, b=0.648 nm, c=0.676 nm, α=103.23°, β=96.7°, γ=96.5°。它和氨可以形成NiS<sub>2</sub>O<sub>6</sub>·6NH<sub>3</sub>。
</p><p>連二硫酸鎳六水合物受熱可以分解：:
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\mathsf {NiS_{2}O_{6}\cdot 6H_{2}O\ {\xrightarrow {130-135^{o}C}}\ NiSO_{4}+SO_{2}+6H_{2}O}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\mathsf {NiS_{2}O_{6}\cdot 6H_{2}O\ {\xrightarrow {130-135^{o}C}}\ NiSO_{4}+SO_{2}+6H_{2}O}}}</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span><span id="参考文献">參考文獻</span></h2>

<h3><span id=".E5.8F.82.E8.80.83.E4.B9.A6.E7.B1.8D"></span><span id="参考书籍">參考書籍</span></h3>
<ul><li><cite class="citation book">Справочник химика <b>2</b> 3-е изд., испр. Л.: Химия. Редкол.: Никольский Б.П. и др. 1971 <span title="連接到俄語網頁">（俄語）</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E8%BF%9E%E4%BA%8C%E7%A1%AB%E9%85%B8%E9%95%8D&amp;rft.btitle=%D0%A1%D0%BF%D1%80%D0%B0%D0%B2%D0%BE%D1%87%D0%BD%D0%B8%D0%BA+%D1%85%D0%B8%D0%BC%D0%B8%D0%BA%D0%B0&amp;rft.date=1971&amp;rft.edition=3-%D0%B5+%D0%B8%D0%B7%D0%B4.%2C+%D0%B8%D1%81%D0%BF%D1%80&amp;rft.genre=book&amp;rft.place=%D0%9B.&amp;rft.pub=%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook"><span> </span></span></li></ul>
**連二硫酸鎳**是一種無機化合物，為連二硫酸的鎳鹽，化學式為 NiS2O6，可溶於水，可以形成綠色的水合物晶體。

## 製備

連二硫酸鎳可由硫酸鎳和連二硫酸鋇的複分解反應製得：

　
: ${\mathsf {NiSO_{4}+BaS_{2}O_{6}\ {\xrightarrow {}}\ NiS_{2}O_{6}+BaSO_{4}\downarrow }}$

## 性質

連二硫酸鎳可溶於水、乙醇和甲醇。它可以形成綠色的六水合物三斜晶體，空間群 P1，晶胞參數 a=0.643 nm, b=0.648 nm, c=0.676 nm, α=103.23°, β=96.7°, γ=96.5°。它和氨可以形成 NiS2O6·6NH3。

連二硫酸鎳六水合物受熱可以分解：:

　
: ${\mathsf {NiS_{2}O_{6}\cdot 6H_{2}O\ {\xrightarrow {130-135^{o}C}}\ NiSO_{4}+SO_{2}+6H_{2}O}}$

## 參考文獻

### 參考書籍

* Справочник химика **2** 3-е изд., испр. Л.: Химия. Редкол.: Никольский Б.П. и др. 1971 （俄語）.
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