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三氟化碘

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三氟化碘
IUPAC名
三氟化碘
别名 氟化碘(III)
识别
CAS号 22520-96-3  ✓
ChemSpider 10329096
SMILES
InChI
InChIKey VJUJMLSNVYZCDT-UHFFFAOYAM
性质
化学式 IF3
摩尔质量 183.9 g·mol⁻¹
外观 黄色固体
熔点 −28 °C以上分解
相关物质
其他阴离子 三氯化碘
其他阳离子 三氟化溴
相关化学品 三氟化氯
五氟化碘
若非注明,所有数据均出自一般条件(25 ℃,100 kPa)下。

三氟化碘(IF3)是一种−28 °C以上就会分解的黄色固体。它可以通过单质直接化合来制备,但必须小心以避免形成IF5

反应

−45 °C下,F2I2三氯氟甲烷中反应产生IF3。另外在低温下也可使用这个氟化反应:

I2 + 3XeF2 → 2IF3 + 3Xe

对三氟化碘的了解不多因为它很不稳定。

化学性质

三氟化碘有5对价层电子,与三氟化氯类似,价层电子对互斥理论预测它的空间构型为T形。它在很低的温度下能与碱金属氟化物或氟化亚硝酰反应得到加合物。这些物质具有M+
IF
4
结构,对热较稳定,遇水立即分解。[1]

参考资料

  1. ^ 张青莲. 《无机化学丛书》第六卷:卤素、铜分族、锌分族. 北京: 科学出版社. : P414. ISBN 7-03-002238-6. 
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三氟化碘
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