<p><b>溴化鐵</b>，化學式為FeBr<sub>3</sub>，棕黃色或深紅棕色固體。易溶於水，溶於水略顯酸性，其水溶液可以結晶出暗綠色的FeBr<sub>3</sub>·6H<sub>2</sub>O。可溶於給電子溶劑（如乙醚、乙醇）中。
</p><p>固體溴化鐵具有和氯化鐵相似的聚合物結構，每個鐵原子為六配位，八面體型結構，與六個溴原子相連。
</p>
<h2><span id=".E5.88.B6.E5.8F.96"></span><span id="制取">製取</span></h2>
<p>溴化鐵可由鐵與溴反應製備：
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\rm {2Fe+3Br_{2}\rightarrow 2FeBr_{3}\,}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\rm {2Fe+3Br_{2}\rightarrow 2FeBr_{3}\,}}}</annotation>
  </semantics></math></span></span></dd></dl><p>溴化亞鐵與溴在170-200 °C時反應也可以得到溴化鐵：
</p>
<dl><dd><span><span><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\rm {2FeBr_{2}+Br_{2}\rightarrow 2FeBr_{3}\,}}}">
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    <annotation encoding="application/x-tex">{\displaystyle {\rm {2FeBr_{2}+Br_{2}\rightarrow 2FeBr_{3}\,}}}</annotation>
  </semantics></math></span></span></dd></dl><h2><span id=".E5.8F.8D.E5.BA.94"></span><span id="反应">反應</span></h2>
<p>溴化鐵可以催化苯與液溴生成溴苯的反應：
</p>
<dl><dd></dd></dl><p>溴化鐵樣品難以制純，原因是它不穩定，Br<sup>−</sup>會被Fe<sup>3+</sup>氧化，生成Br<sub>2</sub>和Fe<sup>2+</sup>。加熱溴化鐵至200 °C以上時容易分解，煮沸其水溶液也會使其分解，生成溴化亞鐵和溴。
</p>
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**溴化鐵**，化學式為 FeBr3，棕黃色或深紅棕色固體。易溶於水，溶於水略顯酸性，其水溶液可以結晶出暗綠色的 FeBr3·6H2O。可溶於給電子溶劑（如乙醚、乙醇）中。

固體溴化鐵具有和氯化鐵相似的聚合物結構，每個鐵原子為六配位，八面體型結構，與六個溴原子相連。

## 製取

溴化鐵可由鐵與溴反應製備：

　
: ${\rm {2Fe+3Br_{2}\rightarrow 2FeBr_{3}\,}}$

溴化亞鐵與溴在 170-200 °C 時反應也可以得到溴化鐵：

　
: ${\rm {2FeBr_{2}+Br_{2}\rightarrow 2FeBr_{3}\,}}$

## 反應

溴化鐵可以催化苯與液溴生成溴苯的反應：

　
:

溴化鐵樣品難以制純，原因是它不穩定，Br−會被 Fe3+ 氧化，生成 Br2 和 Fe2+。加熱溴化鐵至 200 °C 以上時容易分解，煮沸其水溶液也會使其分解，生成溴化亞鐵和溴。

　
: ${\rm {2FeBr_{3}\rightarrow 2FeBr_{2}+Br_{2}\,}}$
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