List of inorganic compounds.html



Relevant links for chemical compounds are:

• The CAS Substance Databases, which contains information on about 23 million compounds.
• Chemfinder [1] is helpful for finding information about a chemical (disable and delete cookies!).
• ChemIDplus at http://chem.sis.nlm.nih.gov/chemidplus/ is a useful non-commercial source for chemical lookups
• http://physchem.ox.ac.uk/MSDS/ Material Data Safety Sheets, plus other relevant links.

These (commercial) links may also provide useful information:

• Sigma Aldrich [2]
• Acros Organics [3]
• Lancaster [4]

Whilst most compounds are referred to by their IUPAC systematic names (following IUPAC nomenclature), "traditional" names have also been kept where they are in wide use or of significant historical interest.

See also: inorganic compounds by element, list of compounds, list of organic compounds, organic compound, list of biomolecules, list of minerals, polyatomic ions, list of elements by name, List of alchemical substances.

A

• Aluminium antimonide – AlSb
• Aluminium arsenide – AlAs
• Aluminium nitride – AlN
• Aluminium oxide – Al₂O₃
• Aluminium phosphide – AlP
• Aluminium chloride – AlCl₃
• Aluminium fluoride – AlF₃
• Aluminium hydroxide – Al(OH)₃
• Aluminium nitrate – Al(NO₃)₃
• Aluminium sulfate – Al₂(SO₄)₃
• Ammonia – NH₃
• Ammonium bicarbonate – NH₄HCO₃
• Ammonium cerium(IV) nitrate – (NH₄)₂Ce(NO₃)₆
• Ammonium chloride – NH₄Cl
• Ammonium hydroxide – NH₄OH
• Ammonium nitrate – NH₄NO₃
• Ammonium sulfate – (NH₄)₂SO₄
• Ammonium tetrathiocyanatodiamminechromate(III) – NH₄[Cr(SCN)₄(NH₃)₂
• Antimony hydride – SbH₃
• Antimony pentachloride – SbCl₅
• Antimony pentafluoride – SbF₅
• Antimony trioxide – Sb₂O₃
• Arsine – AsH₃
• Arsenic trioxide (Arsenic(III) oxide) – As₂O₃ easily confused with arsenous acid As(OH)₃

B

• Barium chloride – BaCl₂
• Barium chromate – BaCrO₄
• Baking soda – NaHCO₃
• Barium hydroxide – Ba(OH)₂
• Barium iodide – BaI₂
• Barium nitrate – Ba(NO₃)₂
• Barium sulfate – BaSO₄
• Barium titanate – BaTiO₃
• Beryllium hydroxide– Be(OH)₂
• Beryllium oxide – BeO
• Bismuth(III) oxide – Bi₂O₃
• Bismuth(III) telluride – Bi₂Te₃
• Borane – Diborane: B₂H₆, Pentaborane: B₅H₉ Decaborane: B₁₀H₁₄
• Borax – Na₂B₄O₇·10H₂O
• Boric acid – H₃BO₃
• Boron carbide – B₄C
• Boron nitride – BN
• Boron oxide – B₂O₃
• Boron suboxide – B₆O
• Boron trichloride – BCl₃
• Boron trifluoride – BF₃
• Bromine pentafluoride – BrF₅
• Bromine trifluoride – BrF₃

C

• Cacodylic acid – (CH₃)₂AsO₂H
• Cadmium arsenide – Cd₃As₂
• Cadmium bromide – CdBr₂
• Cadmium chloride – CdCl₂
• Cadmium fluoride – CdF₂
• Cadmium iodide – CdI₂
• Cadmium nitrate – Cd(NO₃)₂
• Cadmium selenide – CdSe (of quantum dot fame)
• Cadmium sulfate – CdSO₄
• Cadmium telluride – CdTe
• Caesium bicarbonate – CsHCO₃
• Caesium carbonate – Cs₂CO₃
• Caesium chromate – Cs₂CrO₄
• Caesium chloride – CsCl
• Caesium fluoride – CsF
• Calcium carbide – CaC₂
• Calcium chlorate – Ca(ClO₃)₂
• Calcium chloride – CaCl₂
• Calcium chromate – CaCrO₄
• Calcium cyanamide – CaCN₂
• Calcium fluoride – CaF₂
• Calcium hydride – CaH₂
• Calcium hydroxide – Ca(OH)₂
• Calcium sulfate (Gypsum) – CaSO₄
• Carbon dioxide – CO₂
• Carbon disulfide – CS₂
• Carbon monoxide – CO
• Carbonic acid – H₂CO₃
• Carbon tetrabromide – CBr₄
• Carbon tetrachloride – CCl₄
• Carbon tetraiodide – CI₄
• Carbonyl fluoride – COF₂
• Carbonyl sulfide – COS
• Carboplatin – C₆H₁₂N₂O₄Pt
• Cerium(III) chloride – CeCl₃
• Cerium(III) bromide – CeBr₃
• Cerium(IV) sulfate – Ce(SO₄)₂
• Cerium magnesium – CeMg
• Cerium aluminium – CeAl
• Cerium zinc – CeZn
• Cerium silver – CeAg
• Cerium cadmium – CeCd
• Cerium mercury – CeHg
• Cerium thallium – CeTl
• Chromic acid – CrO₃
• Chromium(III) chloride – CrCl₃
• Chromium(II) chloride – CrCl₂ (also chromous chloride)
• Chromium(III) oxide – Cr₂O₃
• Chromium(IV) oxide – CrO₂
• Chromium trioxide (Chromic acid) – CrO₃
• Chromyl chloride – CrO₂Cl₂
• Cisplatin (cis-platinum(II) chloride diammine]] – PtCl₂(NH₃)₂
• Cobalt(II) bromide – CoBr₂
• Cobalt(II) chloride – CoCl₂
• Cobalt(II) carbonate – CoCO₃
• Cobalt(II) sulfate – CoSO₄
• Copper(II) carbonate – CuCO₃
• Copper(I) chloride – CuCl
• Copper(II) chloride – CuCl₂
• Copper(II) hydroxide – Cu(OH)₂
• Copper(II) nitrate – Cu(NO₃)₂
• Copper(I) oxide – Cu₂O
• Copper(II) oxide – CuO
• Copper(II) sulfate – CuSO₄
• Copper(I) sulfide – Cu₂S
• Copper(II) sulfide – CuS
• Cyanogen – (CN)₂
• Cyanogen chloride – CNCl
• Cyanuric chloride – C₃Cl₃N₃
• Chrome-alum; K₂SO₄Cr₂(SO₄)₃.24H₂O

D

• Decaborane (Diborane) – B₁₀H₁₄
• Diborane – B₂H₆
• Dichlorosilane – SiH₂Cl₂
• Dinitrogen pentoxide (nitronium nitrate) – N₂O₅
• Disilane – Si₂H₆
• Dysprosium(III) chloride – DyCl₃

E

• Erbium(III) chloride – ErCl₃
• Europium(III) chloride – EuCl₃
• Erbium-copper – ErCu
• Erbium-gold – ErAu
• Erbium-silver – ErAg
• Erbium-Iridium – ErIr

F

• Fluorosulfuric acid – FSO₂(OH)

G

• Gadolinium(III) chloride – GdCl₃
• Gadolinium(III) oxide – Gd₂O₃
• Gallium antimonide – GaSb
• Gallium arsenide – GaAs
• Gallium(III) chloride – GaCl₃
• Gallium nitride – GaN
• Gallium phosphide – GaP
• Germanium(IV) hydride – GeH₄
• Germanium(III) hydride – Ge₂H₆
• Germanium(II) fluoride – GeF₂
• Germanium(IV) fluoride – GeF₄
• Germanium(II) chloride – GeCl₂
• Germanium(IV) chloride – GeCl₄
• Germanium(II) bromide – GeBr₂
• Germanium(IV) bromide – GeBr₄
• Germanium(II) iodide – GeI₂
• Germanium(IV) iodide – GeI₄
• Germanium(II) oxide – GeO
• Germanium(IV) oxide – GeO₂
• Germanium(II) sulfide – GeS
• Germanium(IV) sulfide – GeS₂
• Germanium(II) selenide – GeSe
• Germanium(IV) selenide – GeSe₂
• Germanium telluride – GeTe
• Germanium (IV) nitride – Ge₃N₄
• Gold(I) chloride – AuCl
• Gold(III) chloride – AuCl₃
• Gold(I,III) chloride – Au₄Cl₈
• Gold(III) chloride – (AuCl₃)₂
• Gold(III) fluoride – AuF₃
• Gold(V) fluoride – AuF₅
• Gold(I) bromide – AuBr
• Gold(III) bromide – (AuBr₃)₂
• Gold(I) iodide – AuI
• Gold(III) iodide – AuI₃
• Gold(III) oxide – Au₂O₃
• Gold(I) sulfide – Au₂S
• Gold(III) sulfide – Au₂S₃
• Gold(III) selenide – AuSe
• Gold(III) selenide – Au₂Se₃
• Gold ditelluride – AuTe₂

H

• Hafnium fluoride
• Hafnium tetrachloride – HfCl₄
• Hydrazine – N₂H₄
• Hydrazoic acid – HN₃
• Hydrobromic acid – HBr
• Hydrochloric acid – HCl
• Hydroiodic acid – HI
• Hydrogen bromide – HBr
• Hydrogen chloride – HCl
• Hydrogen fluoride – HF
• Hydrogen peroxide – H₂O₂
• Hydrogen selenide – H₂Se
• Hydrogen sulfide – H₂S
• Hydrogen telluride – H₂Te
• Hydroxylamine – NH₂OH
• Hypochlorous acid – HClO
• Hypophosphorous acid – H₃PO₂

I

• Indium antimonide – InSb
• Indium arsenide – InAs
• Indium(I) chloride
• Indium nitride – InN
• Indium phosphide – InP
• Iodic acid – HIO₃
• Iodine heptafluoride – IF₇
• Iodine pentafluoride – IF₅
• Iodine monochloride – ICl
• Iridium(IV) chloride
• Iron(II) chloride – FeCl₂ including hydrate
• Iron(III) chloride – FeCl₃
• Iron(II) oxide – FeO
• Iron(III) nitrate – Fe(NO₃)₃(H₂O)₉
• Iron(II,III) oxide – Fe₃O₄
• Iron(III) oxide – Fe₂O₃
• Iron-sulfur cluster
• Iron(III) thiocyanate

J

K

Krypton Difluoride - KrF₂

L

• Lanthanum carbonate – La₂(CO₃)₃
• Lanthanum magnesium – LaMg
• Lanthanum aluminium – LaAl
• Lanthanum zinc – LaZn
• Lanthanum silver – LaAg
• Lanthanum cadmium – LaCd
• Lanthanum mercury – LaHg
• Lanthanum tallium – LaTl
• Lead(II) carbonate – Pb(CO₃)
• Lead(II) chloride – PbCl₂
• Lead(II) iodide – PbI₂
• Lead(II) nitrate – Pb(NO₃)₂
• Lead(II) oxide – PbO
• Lead(IV) oxide – PbO₂
• Lead(II) phosphate – Pb₃(PO₄)₂
• Lead(II) sulfate – Pb(SO₄)
• Lead(II) selenide – PbSe
• Lead(II) sulfide – PbS
• Lead(II) telluride – PbTe
• Lead zirconate titanate – Pb[Ti_xZr_1-xO₃ (e.g., x = 0.52 is Lead zirconium titanate)
• Lithium aluminium hydride – LiAlH₄
• Lithium bromide – LiBr
• Lithium carbonate (Lithium salt) – Li₂CO₃
• Lithium chloride – LiCl
• Lithium hydride – LiH
• Lithium hydroxide – LiOH
• Lithium iodide – LiI
• Lithium nitrate – LiNO₃
• Lithium sulfate – Li₂SO₄

M

• Magnesium carbonate – MgCO₃
• Magnesium chloride – MgCl₂
• Magnesium oxide – MgO
• Magnesium phosphate – Mg₃(PO₄)₂
• Magnesium sulfate – MgSO₄
• Manganese(IV) oxide (manganese dioxide) – MnO₂
• Manganese(II) sulfate monohydrate – MnSO₄.H₂O
• Manganese(II) chloride – MnCl₂
• Manganese(III) chloride – MnCl₃
• Manganese(IV) fluoride – MnF₄
• Manganese(II) phosphate – Mn₃(PO₄)₂
• Mercury(I) chloride – Hg₂Cl₂
• Mercury(II) chloride – HgCl₂
• Mercury fulminate – Hg(ONC)₂
• Mercury(II) selenide – HgSe
• Mercury(I) sulfate – Hg₂SO₄
• Mercury(II) sulfate – HgSO₄
• Mercury(II) sulfide – HgS
• Mercury(II) telluride – HgTe
• Metaphosphoric acid – HPO₃
• Molybdate orange
• Molybdenum trioxide – MoO₃
• Molybdenum disulfide – MoS₂
• Molybdenum hexacarbonyl – C₆O₆Mo
• Molybdic acid – H₂MoO₄

N

• Neodymium(III) chloride – NdCl₃
• Nessler's reagent – K₂[HgI₄
• Nickel(II) carbonate – NiCO₃
• Nickel(II) chloride – NiCl₂ and hexahydrate
• Nickel(II) hydroxide – Ni(OH)₂
• Nickel(II) nitrate – Ni(NO₃)₂
• Nickel(II) oxide – NiO
• Niobium pentachloride – NbCl₅
• Nitric acid – HNO₃
• Nitric oxide – NO
• Nitrogen dioxide – NO₂
• Nitrosylsulfuric acid – NOHSO₄
• Nitrous acid – HNO₂
• Nitrous oxide – N₂O

O

• Orthophosphoric acid – H₃PO₄
• Osmium tetroxide (osmium(VIII) oxide) – OsO₄
• Osmium trioxide (osmium(VI) oxide) – OsO₃
• Oxybis(tributyltin) – C₂₄H₅₄OSn₂
• Oxygen difluoride – OF₂
• Ozone – O₃

P

• Palladium(II) chloride – PdCl₂
• Palladium(II) nitrate – Pd(NO₃)₂
• Pentaborane – B₅H₉
• Pentasulfide antimony – Sb₂S₅
• Perchloric acid – HClO₄
• Perchloryl fluoride – ClFO₃
• Persulfuric acid (Caro's acid) – H₂SO₅
• Perxenic acid – H₄XeO₆
• Phenylarsine oxide – (C₆H₅)AsO
• Phenylphosphine – C₆H₇P
• Phosgene – COCl₂
• Phosphine – PH₃
• Phosphite – HPO₃^2-
• Phosphomolybdic acid – HMoNiO₆P-₄
• Phosphoric acid – H₃PO₄
• Phosphorous acid (Phosphoric(III) acid) – H₃PO₃
• Phosphorus pentabromide – PBr₅
• Phosphorus pentafluoride – PF₅
• Phosphorus pentasulfide – P₄S₁₀
• Phosphorus pentoxide – P₂O₅
• Phosphorus sesquisulfide – P₄S₃
• Phosphorus tribromide – PBr₃
• Phosphorus trichloride – PCl₃
• Phosphorus trifluoride – PF₃
• Phosphorus triiodide – PI₃
• Phosphotungstic acid – H₃PW₁₂O₄₀
• Platinum(II) chloride – PtCl₂
• Platinum(IV) chloride – PtCl₄
• Plutonium(III) chloride – PuCl₃
• Plutonium dioxide (Plutonium(IV) oxide) – PuO₂
• Potash Alum– K₂SO₄.Al₂(SO₄)₃·24H₂O
• Potassium Aluminium Fluoride – KALF₄
• Potassium borate – K₂B₄O₇•4H₂O
• Potassium bromide – KBr
• Potassium carbonate – K₂CO₃
• Potassium chlorate – KClO₃
• Potassium chloride – KCl
• Potassium ferrioxalate – K₃[Fe(C₂O₄)₃
• Potassium hydrogencarbonate – KHCO₃
• Potassium hydrogen fluoride – HF₂K
• Potassium hydroxide – KOH
• Potassium iodide – KI
• Potassium monopersulfate – K₂SO₄·KHSO₄·2KHSO₅
• Potassium nitrate – KNO₃
• Potassium perbromate – KBrO₄
• Potassium perchlorate – KClO₄
• Potassium permanganate – KMnO₄
• Potassium sulfate – K₂SO₄
• Potassium sulfide – K₂S
• Potassium titanyl phosphate – KTiOPO₄
• Potassium vanadate – KVO₃
• Praseodymium(III) chloride – PrCl₃
• Protonated molecular hydrogen – H₃⁺
• Prussian blue (Iron(III) hexacyanoferrate(II)) – Fe₄[Fe(CN)₆₃
• Pyrosulfuric acid – H₂S₂O₇

Q

R

• Radium chloride – RaCl₂
• Radon difluoride – RnF₂
• Rhodium(III) chloride – RhCl₃
• Rubidium bromide – RbBr
• Rubidium chloride – RbCl
• Rubidium fluoride – RbF
• Rubidium hydroxide – RbOH
• Rubidium iodide – RbI
• Rubidium nitrate – RbNO₃
• Rubidium oxide – Rb₂O
• Rubidium telluride – Rb₂Te
• Ruthenium(VIII) oxide – RuO₄

S

• Samarium(II) iodide – SmI₂
• Samarium(III) chloride – SmCl₃
• Scandium(III) triflate – Sc(OSO₂CF₃)₃
• Scandium(III) chloride – ScCl₃ and hydrate
• Scandium(III) fluoride – ScF₃
• Scandium(III) nitrate – Sc(NO₃)₃
• Scandium(III) oxide – Sc₂O₃
• Selenic acid – H₂SeO₄
• Selenious acid – H₂SeO₃
• Selenium trioxide – SeO₃
• Selenium dioxide – SeO₂
• Silane – SiH₄
• Silica gel – SiO₂·nH₂O
• Silicic acid – [SiO_x(OH)_4-2xn
• Silicochloroform – Cl₃HSi
• Silicofluoric acid – H₂SiF₆
• Silicon dioxide – SiO₂
• Silver chloride – AgCl
• Silver(I) fluoride – AgF
• Silver(II) fluoride – AgF₂
• Silver iodide – AgI
• Silver nitrate – AgNO₃
• Silver sulfide – Ag₂S

• Soda lime –
• Sodamide – NaNH₂
• Sodium borohydride – NaBH₄
• Sodium bromide – NaBr
• Sodium bromate – NaBrO₃
• Sodium carbonate – Na₂CO₃
• Sodium chloride – NaCl
• Sodium chlorate – NaClO₃
• Sodium cyanide – NaCN
• Sodium ferrocyanide – Na₄Fe(CN)₆
• Sodium hydride – NaH
• Sodium hydrogen carbonate (Sodium bicarbonate) – NaHCO₃
• Sodium hydrosulfide – NaSH
• Sodium hydroxide – NaOH
• Sodium iodide – NaI
• Sodium monofluorophosphate (MFP) – Na₂PFO₃
• Sodium nitrate – NaNO₃
• Sodium nitrite – NaNO₂
• Sodium percarbonate – 2Na₂CO₃.3H₂O₂
• Sodium phosphate; see Trisodium phosphate – Na₃PO₄
• Sodium silicate – Na₂SiO₃
• Sodium sulfate – Na₂SO₄
• Sodium sulfide – Na₂S
• Sodium sulfite – Na₂SO₃
• Sodium tellurite – Na₂TeO₃
• Stannous chloride (tin(II) chloride) – SnCl₂
• Stibine – SbH₃
• Strontium chloride – SrCl₂
• Strontium nitrate – Sr(NO₃)₂
• Strontium titanate – SrTiO₃
• Sulfamic acid – H₃NO₃S
• Sulfane – H₂S
• Sulfur dioxide – SO₂
• Sulfuric acid – H₂SO₄
• Sulfurous acid – H₂SO₃
• Sulfuryl chloride – SO₂Cl₂

T

• Tantalum carbide – TaC
• Tantalum(V) oxide – Ta₂O₅
• Telluric acid – H₆TeO₆
• Tellurium dioxide – TeO₂
• Tellurium tetrachloride – TeCl₄
• Tellurous acid – H₂TeO₃
• Terbium(III) chloride – TbCl₃
• Tetraborane(10) – B₄H₁₀
• Tetrachloroauric acid – AuCl₃
• Tetrafluorohydrazine – N₂F₄
• Tetramminecopper(II) sulfate – [Cu(NH₃)₄SO₄
• Tetrasulfur tetranitride – S₄N₄
• Thallium(I) carbonate – T_l2CO₃
• Thallium(I) fluoride – TlF
• Thallium(III) oxide Tl₂O₃
• Thallium(III) sulfate
• Thionyl chloride – SOCl₂
• Thiophosgene – CSCl₂
• Thiophosphoryl chloride – Cl₃PS
• Thorium dioxide – ThO₂
• Thortveitite – (Sc,Y)₂Si₂O₇
• Thulium(III) chloride – TmCl₃
• Tin(II) chloride – SnCl₂
• Tin(II) fluoride – SnF₂
• Tin(IV) chloride – SnCl₄
• Titanium boride – TiB₂
• Titanium carbide – TiC
• Titanium dioxide (titanium(IV) oxide) – TiO₂
• Titanium dioxide (B) (titanium(IV) oxide) – TiO₂
• Titanium nitride – TiN
• Titanium(IV) bromide (titanium tetrabromide) – TiBr₄
• Titanium(IV) chloride (titanium tetrachloride) – TiCl₄
• Titanium(III) chloride – TiCl₃
• Titanium(II) chloride – TiCl₂
• Titanium(IV) iodide (titanium tetraiodide) – TiI₄
• Trifluoromethylisocyanide – C₂NF₃
• Trifluoromethanesulfonic acid – CF₃SO₃H
• Trimethylphosphine – C₃H₉P
• Trioxidane – H₂O₃
• Tripotassium phosphate – K₃PO₄
• Trisodium phosphate – Na₃PO₄
• Tungsten carbide – WC
• Tungsten(VI) chloride – WCl₆
• Tungsten(VI) Fluoride – WF₆
• Tungstic acid – H₂WO₄
• Tungsten hexacarbonyl – W(CO)₆

U

• Uranium hexafluoride – UF₆
• Uranyl nitrate – UO₂(NO₃)₂
• Triuranium octaoxide (pitchblende or yellowcake) – U₃O₈

V

• Vanadium carbide – VC
• Vanadium oxytrichloride (Vanadium(V) oxide trichloride) – VOCl₃
• Vanadium(IV) chloride – VCl₄
• Vanadium(II) chloride – VCl₂
• Vanadium(II) oxide – VO
• Vanadium(III) nitride – VN
• Vanadium(III) bromide – VBr₃
• Vanadium(III) chloride – VCl₃
• Vanadium(III) fluoride – VF₃
• Vanadium(IV) fluoride – VF₄
• Vanadium(III) oxide – V₂O₃
• Vanadium(IV) oxide – VO₂
• Vanadium(IV) sulfate – VOSO₄
• Vanadium(V) oxide – V₂O₅

W

• Water – H₂O

X

• Xenon difluoride – XeF₂
• Xenon hexafluoroplatinate – Xe[PtF₆
• Xenon tetrafluoride – XeF₄
• Xenon tetroxide – XeO₄
• Xenic acid – H₂XeO₄

Y

• Ytterbium(III) chloride – YbCl₃
• Ytterbium(III) oxide – Yb₂O₃
• Yttrium(III) antimonide – YSb
• Yttrium(III) arsenide – YAs
• Yttrium(III) bromide – YBr₃
• Yttrium aluminium garnet – Y₃A_l5O₁₂
• Yttrium barium copper oxide – YBa₂Cu₃O₇
• Yttrium(III) fluoride – YF₃
• Yttrium iron garnet – Y₃Fe₅O₁₂
• Yttrium(III) oxide – Y₂O₃
• Yttrium(III) sulfide – Y₂S₃
• Yttrium copper – YCu
• Yttrium silver – YAg
• Yttrium gold – YAu
• Yttrium rhodium – YRh
• Yttrium iridium – YIr
• Yttrium zinc – YZn
• Yttrium cadmium – YCd
• Yttrium magnesium – YMg

Z

• Zinc bromide – ZnBr₂
• Zinc carbonate – ZnCO₃
• Zinc chloride – ZnCl₂
• Zinc cyanide – Zn(CN)₂
• Zinc fluoride – ZnF₂
• Zinc iodide – ZnI₂
• Zinc oxide – ZnO
• Zinc selenide – ZnSe
• Zinc sulfate – ZnSO₄
• Zinc sulfide – ZnS
• Zinc telluride – ZnTe
• Zirconia hydrate – ZrO₂.nH₂O
• Zirconium carbide – ZrC
• Zirconium(IV) chloride – ZrCl₄
• Zirconium nitride – ZrN
• Zirconium hydroxide – Zr(OH)₄
• Zirconium(IV) oxide – ZrO₂
• Zirconium orthosilicate – ZrSiO₄
• Zirconium tetrahydroxide – H₄O₄Zr
• Zirconium tungstate – ZrW₂O₈