<p><b>四氟化鐠</b>是鑭系元素鐠的氟化物之一，化學式為PrF<sub>4</sub>，它於90 °C分解為三氟化鐠和氟氣。</p>
<h2><span id=".E5.88.B6.E5.A4.87"></span><span id="制备">製備</span></h2>
<p>它可由十一氧化六鐠和氟氣在無水氟化氫中紫外線照射下反應得到。它也能由三氟化鐠或十一氧化六鐠和二氟化氪反應得到，以氧化物為原料產率可達100%。另一種方法是Na<sub>2</sub>PrCl<sub>5</sub>經過氟化得到Na<sub>2</sub>PrF<sub>6</sub>，它在無水氟化氫中分解，得到四氟化鐠。</p>
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**四氟化鐠**是鑭系元素鐠的氟化物之一，化學式為 PrF4，它於 90 °C 分解為三氟化鐠和氟氣。

## 製備

它可由十一氧化六鐠和氟氣在無水氟化氫中紫外線照射下反應得到。它也能由三氟化鐠或十一氧化六鐠和二氟化氪反應得到，以氧化物為原料產率可達 100%。另一種方法是 Na2PrCl5 經過氟化得到 Na2PrF6，它在無水氟化氫中分解，得到四氟化鐠。

　
: ${\mathsf {PrO_{2}+2KrF_{2}\ {\xrightarrow {}}\ PrF_{4}+O_{2}+2Kr}}$

　
: ${\mathsf {Na_{2}[PrF_{6}]+2HF\ {\xrightarrow {}}\ PrF_{4}\downarrow +2NaHF_{2}}}$

## 參考文獻
15192-24-2