{{chembox
| verifiedrevid = 417316717
| Name = 氯化镨
| ImageFile = Praseodymium(III)-chloride-heptahydrate.jpg
| ImageFileL1 = UCl3 without caption.png
| ImageFileR1 = Cerium bromide (space filling) 2.png
| ImageName =
| IUPACName = 氯化镨
Praseodymium(III) chloride
| OtherNames = 三氯化镨
| Section1 =
| Section2 =
| Section3 = {{Chembox Structure
| Coordination = Tricapped trigonal prismatic
(nine-coordinate)
| CrystalStruct = 六方
:2 Pr + 6 HCl → 2 PrCl3 + 3 H2
它通常通过真空升华法提纯也可以用氯化亚砜来脱水

无水氯化镨很容易吸水并潮解

氯化镨的水溶液可以制备难溶的镨化合物。例如，磷酸镨(III)和氟化镨(III)可以通过相应的复分解反应制备：

:PrCl3 + K3PO4 → PrPO4 + 3 KCl
:PrCl3 + 3 NaF → PrF3 + 3 NaCl

当和碱金属氯化物加热时，会形成一系列的三元化合物，它们的化学式为MPr2Cl7, M3PrCl6、 M2PrCl5和M3Pr2Cl9。（其中M = K, Rb, Cs）

参考资料
补充阅读

CRC Handbook of Chemistry and Physics (58th edition), CRC Press, West Palm Beach, Florida, 1977.

N. N. Greenwood, A. Earnshaw, Chemistry of the Elements, Pergamon Press, 1984.

S. Sugiyama, T. Miyamoto, H. Hayashi, M. Tanaka, J. B. Moffat Journal of Molecular Catalysis A, 118, 129-136 (1997).

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