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	{{Chembox		{{Chembox
			| Watchedfields = changed
	| verifiedrevid = 400872697		| verifiedrevid = 431808387
	| ImageFile = Polonium-dichloride-xtal-2x2x2-1955-3D-balls.png		| ImageFile = Polonium-dichloride-xtal-2x2x2-1955-3D-balls.png
	| ImageSize =		| ImageSize =
	| IUPACName =		| IUPACName =
	| OtherNames =		| OtherNames =
	| Section1 = {{Chembox Identifiers		|Section1={{Chembox Identifiers
	| CASNo =		| CASNo = 60816-56-0
			| CASNo_Ref = {{Cascite|changed|CAS}}
	| PubChem =
	| SMILES = }}		| PubChem = 144504549
			| StdInChI=1S/2ClH.Po/h2*1H;/q;;+2/p-2
⚫	| Section2 = {{Chembox Properties
			| StdInChIKey = DUSGZPHDYXXYGD-UHFFFAOYSA-L
⚫	| Formula = PoCl<sub>2</sub>
			| SMILES =ClCl }}
⚫	| MolarMass = 279.91&nbsp;g&nbsp;mol<sup>−1</sup>
		⚫	|Section2={{Chembox Properties
		⚫	| Formula = {{chem2|PoCl2}}
		⚫	| MolarMass = 279.91 g/mol
	| Appearance = ruby-red solid<ref name="H&W">{{Holleman&Wiberg|page=594}}</ref>		| Appearance = ruby-red solid<ref name="H&W">{{Holleman&Wiberg|page=594}}</ref>
			| Density = 6.50&nbsp;g&nbsp;cm<sup>−3</sup><ref name="Bagnall"/>
	| Density = 6.50&nbsp;g&nbsp;cm<sup>3</sup><ref name="Bagnall">{{ cite journal | journal = ] | year = 1955 | pages = 2320–2326 | doi = 10.1039/JR9550002320 | title = The polonium halides. Part I. Polonium chlorides | author1 = K. W. Bagnall | author2 = R. W. M. D'Eye, J. H. Freeman | author-separator = , | author-name-separator = | last3 = Freeman | first3 = J. H. }}</ref>
			| MeltingPtC = 355
	| MeltingPt = 355&nbsp;°C (] at 130&nbsp;°C)<ref name="H&W"/>		| MeltingPt_notes = (] at 130&nbsp;°C)<ref name="H&W"/>
	| BoilingPt =		| BoilingPt =
	| Solubility = }}		| Solubility = }}
	| Section3 = {{Chembox Hazards		|Section3={{Chembox Structure
			| CrystalStruct = ], ]<ref name="Bagnall">{{cite journal|doi=10.1039/JR9550002320|title=The polonium halides. Part I. Polonium chlorides|year=1955|last1=Bagnall|first1=K. W.|last2=d'Eye|first2=R. W. M.|last3=Freeman|first3=J. H.|journal=Journal of the Chemical Society (Resumed)|pages=2320}}</ref>
	| MainHazards =
			| SpaceGroup = Pmmm (No 47)
	| FlashPt =
			| LattConst_a = 0.367 nm
	| Autoignition = }}
			| LattConst_b = 0.435 nm
			| LattConst_c = 0.450 nm
			}}
	}}		}}
	'''Polonium dichloride''' is a ] of the radioactive metal ] and ]. Its ] is PoCl<sub>2</sub>.		'''Polonium dichloride''' is a ] of the radioactive ], ] and ]. Its ] is {{chem2|PoCl2}}. It is an ionic salt.
	==Structure==		==Structure==
	Polonium dichloride appears to crystallise with an orthorhombic ] in either the ''P''222, ''P''mm2 or ''Pmmm'' ], although this is likely a pseudo-cell. Alternatively, the true space group may be monoclinic or triclinic, with one or more cell angles close to 90°.<ref name="Bagnall"/> Assuming the space group is ''P''222, the structure exhibits distorted cubic coordination of Po as {PoCl<sub>8</sub>} and distorted square planar coordination of Cl as {ClPo<sub>4</sub>}.		Polonium dichloride appears to crystallise with an orthorhombic ] in either the ''P''222, ''P''mm2 or ''Pmmm'' ], although this is likely a pseudo-cell. Alternatively, the true space group may be monoclinic or triclinic, with one or more cell angles close to 90°.<ref name="Bagnall"/> Assuming the space group is ''P''222, the structure exhibits distorted cubic coordination of Po as {{chem2|{PoCl8}|}} and distorted square planar coordination of Cl as {{chem2|{ClPo4}|}}.
	] ]		] ]
	==Preparation==		==Preparation==
	PoCl<sub>2</sub> can be obtained either by ] of polonium metal or by dehalogenation of ], PoCl<sub>4</sub>.<ref name="H&W"/> Methods for dehalogenating PoCl<sub>4</sub> include thermal decomposition at 300&nbsp;°C, reduction of cold, slightly moist PoCl<sub>4</sub> by ]; and heating PoCl<sub>4</sub> in a stream of ] or ] at 150&nbsp;°C.<ref name="Bagnall"/>		{{chem2|PoCl2}} can be obtained either by ] of polonium metal or by dehalogenation of ], {{chem2|PoCl4}}.<ref name="H&W"/> Methods for dehalogenating {{chem2|PoCl4}} include thermal decomposition at 300&nbsp;°C, reduction of cold, slightly moist {{chem2|PoCl4}} by ]; and heating {{chem2|PoCl4}} in a stream of ] or ] at 150&nbsp;°C.<ref name="Bagnall"/>
	==Reactions==		==Reactions==
	PoCl<sub>2</sub> dissolves in dilute ] to give a pink solution, which ] to Po(IV). PoCl<sub>2</sub> is rapidly oxidised by ] or chlorine water. Addition of ] to the pink solution results in a dark brown precipitate – possibly hydrated PoO or Po(OH)<sub>2</sub> – which is rapidly oxidised to Po(IV). With dilute ], PoCl<sub>2</sub> forms a dark red solution followed by a flaky white precipitate of unknown composition.<ref name="Bagnall"/>		{{chem2|PoCl2}} dissolves in dilute ] to give a pink solution, which ] to Po(IV). {{chem2|PoCl2}} is rapidly oxidised by ] or chlorine water. Addition of ] to the pink solution results in a dark brown precipitate – possibly hydrated ] or {{chem2|Po(OH)2}} – which is rapidly oxidised to Po(IV). With dilute ], {{chem2|PoCl2}} forms a dark red solution followed by a flaky white precipitate of unknown composition.<ref name="Bagnall"/>
			==See also==
			*]
	==References==		==References==
	{{reflist}}		{{reflist}}
			{{Polonium compounds}}
			{{Chlorides}}
	]		]
	]		]
			]
	]		]
	]
	]
	]