Browse history interactively

Page 1

Page 1Revision 1

Page 2

Page 2Revision 2

← Previous editContent deleted Content addedVisualWikitext

Revision as of 07:40, 8 June 2011 editMaterialscientist (talk | contribs)Edit filter managers, Autopatrolled, Checkusers, Administrators1,994,292 edits Undid revision 433167373 by 203.20.248.4 unsourced; identification of what?← Previous edit		Latest revision as of 09:44, 3 January 2025 edit undoGraeme Bartlett (talk | contribs)Administrators249,755 edits more ids and hazards from pubchem
(55 intermediate revisions by 45 users not shown)
Line 1:		Line 1:
	{{chembox		{{chembox
			| Verifiedfields = changed
⚫	| verifiedrevid = 407865325
			| Watchedfields = changed
		⚫	| verifiedrevid = 433168896
	| ImageFile = Au2O3structure.jpg		| ImageFile = Au2O3structure.jpg
	| IUPACName = Gold(III) oxide		| IUPACName = Gold(III) oxide
	| OtherNames = Gold trioxide, Gold sesquioxide		| OtherNames = Gold trioxide, Gold sesquioxide, Auric oxide
	| Section1 = {{Chembox Identifiers		|Section1={{Chembox Identifiers
			| CASNo_Ref = {{cascite|correct|??}}
	| CASNo = 1303-58-8
	| PubChem =		| CASNo = 1303-58-8
	| SMILES =		| ChemSpiderID = 144478
			| EC_number = 215-122-1
			| UNII_Ref = {{fdacite|correct|FDA}}
			| UNII = LW5Y686RUP
			| PubChem = 164805
			| SMILES = ....
			| InChI = InChI=1S/2Au.3O/q2*+3;3*-2
			| InChIKey = DDYSHSNGZNCTKB-UHFFFAOYSA-N
	}}		}}
	| Section2 = {{Chembox Properties		|Section2={{Chembox Properties
	| Formula = Au<sub>2</sub>O<sub>3</sub>		| Formula = Au<sub>2</sub>O<sub>3</sub>
	| MolarMass = 441.93		| MolarMass = 441.93
	| Appearance = red-brown solid		| Appearance = red-brown solid
	| Density = 11.34 g/cm<sup>3</sup> at 20 °C<ref name=struct>{{cite journal| doi=10.1107/S0567740879006622| title=Gold(III) oxide| year=1979| author=Jones, P. G.| journal=Acta Crystallographica Section B| volume=35| pages=1435| last2=Rumpel| first2=H.| last3=Schwarzmann| first3=E.| last4=Sheldrick| first4=G. M.| last5=Paulus| first5=H.}}</ref>		| Density = 11.34 g/cm<sup>3</sup> at 20 °C<ref name=struct>{{cite journal| doi=10.1107/S0567740879006622| title=Gold(III) oxide| year=1979| author=Jones, P. G.| journal=Acta Crystallographica Section B| volume=35| pages=1435| last2=Rumpel| first2=H.| last3=Schwarzmann| first3=E.| last4=Sheldrick| first4=G. M.| last5=Paulus| first5=H.| issue=6| url=https://link.springer.com/article/10.1007%2FBF03215453}}</ref>
			| MeltingPtC = 298
	| MeltingPt = decomposes at 160 °C
	| BoilingPt =		| MeltingPt_notes =
			| MeltingPt_ref =<ref>{{cite journal | last1=Kawamoto | first1=Daisuke | last2=Ando | first2=Hiroaki | last3=Ohashi | first3=Hironori | last4=Kobayashi | first4=Yasuhiro | last5=Honma | first5=Tetsuo | last6=Ishida | first6=Tamao | last7=Tokunaga | first7=Makoto | last8=Okaue | first8=Yoshihiro | last9=Utsunomiya | first9=Satoshi | last10=Yokoyama | first10=Takushi | title=Structure of a Gold(III) Hydroxide and Determination of Its Solubility | journal=Bulletin of the Chemical Society of Japan | publisher=The Chemical Society of Japan | volume=89 | issue=11 | date=2016-11-15 | issn=0009-2673 | doi=10.1246/bcsj.20160228 | pages=1385–1390| doi-access=free }}</ref>
⚫	| Solubility = insoluble in water, soluble in hydrochloric and nitric acid
			| BoilingPt =
		⚫	| Solubility = insoluble in water, soluble in hydrochloric and nitric acid
	}}		}}
	| Section3 = {{Chembox Structure		|Section3={{Chembox Structure
	| CrystalStruct = ], ], SpaceGroup = Fdd2, No. 43<ref name=struct/>		| CrystalStruct = ], ]
			| SpaceGroup = = ''Fdd''2, No. 43<ref name=struct/>
	}}		}}
		⚫	|Section7={{Chembox Hazards
			| GHS_ref=
⚫	| Section7 = {{Chembox Hazards
			| GHSPictograms = {{GHS07}}
⚫	| MainHazards =
			| GHSSignalWord = Warning
	| FlashPt =
			| HPhrases = {{H-phrases|315|319}}
	| Autoignition =
			| PPhrases = {{P-phrases|264|264+265|280|302+352|305+351+338|321|332+317|337+317|362+364}}
		⚫	| MainHazards =
			| NFPA-H = 1
			| NFPA-F = 0
			| NFPA-R = 0
	}}		}}
	}}		}}
	'''Gold(III) oxide''' (Au<sub>2</sub>O<sub>3</sub>) is the most stable ] of ]. It is a red-brown, thermally unstable solid that decomposes at 160&nbsp;°C.<ref name = "Greenwood"> {{Greenwood&Earnshaw}}</ref> The hydrated form is weakly ] and dissolves in concentrated ] to form salts that are believed to contain the <sup><nowiki>&minus;</nowiki></sup> ion.<ref name = "Greenwood"/>
			'''Gold(III) oxide''' (Au<sub>2</sub>O<sub>3</sub>) is an ] of ] and ] with the formula Au<sub>2</sub>O<sub>3</sub>. It is a red-brown solid that decomposes at 298&nbsp;°C.<ref name = "Greenwood">{{Greenwood&Earnshaw}}</ref>
	Anhydrous Au{{sub|2}}O{{sub|3}} can be prepared by heating amorphous hydrated gold(III) oxide with ] and an ] ] in a sealed ] tube at a temperature of around 250&nbsp;°C and a pressure of around 30 MPa.<ref>Jones PG, Rumpel H, Sheldrick GM, Schwartzmann E, , Anorganisch-Chemisches Institut der Universität Göttingen</ref>
			According to ], Au{{sub|2}}O{{sub|3}} features square planar gold centers with both 2- and 3-coordinated oxides. The four Au-O bond distances range from 193 to 207 ]s.<ref name=struct/> The crystals can be prepared by heating amorphous hydrated gold(III) oxide with ] and an ] ] in a sealed ] tube at a temperature of around 250&nbsp;°C and a pressure of around 30 MPa.<ref>{{cite journal|doi=10.1007/BF03215453|format=open access|title=Gold(III) oxide and oxychloride|journal=Gold Bulletin|volume=13|issue=2|pages=56|year=1980|last1=Jones|first1=Peter G.|last2=Rumpel|first2=Horst|last3=Sheldrick|first3=George M.|last4=Schwarzmann|first4=Einhard|doi-access=free}}</ref>
	Gold oxide is used to make highly-valued cranberry or red-colored glass, which, like ] gold suspensions, contains evenly-sized spherical gold ].
	==References==		==References==
	{{reflist}}		{{reflist}}
			==External links==
			*{{Commons category inline}}
			{{oxygen compounds}}
	{{Gold compounds}}		{{Gold compounds}}
	]		]
	]
	]		]
	{{inorganic-compound-stub}}		{{inorganic-compound-stub}}
			]
			]
	]
	]
	]
	]
	]
	]
	]
	]
	]