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IUPAC name Ammonium hexafluorotantalate | |
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Properties | |
F6H4NTa | |
Molar mass | 312.977 g·mol−1 |
Appearance | White crystals or powder |
Density | 3.819 g/cm3 |
soluble | |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Ammonium hexafluorotantalate is an inorganic chemical compound with the chemical formula NH4TaF6. [1] [2] [3]
Ammonium hexafluorotantalate forms white crystals of the hexagonal system, space group R3m. Unit cell parameters are a=7.70 and c=7.95, with 3 formulas per unit cell. [4]
Ammonium hydrosulfide is the chemical compound with the formula [NH4]SH.
Indium(III) sulfate (In2(SO4)3) is a sulfate salt of the metal indium. It is a sesquisulfate, meaning that the sulfate group occurs 11/2 times as much as the metal. It may be formed by the reaction of indium, its oxide, or its carbonate with sulfuric acid. An excess of strong acid is required, otherwise insoluble basic salts are formed. As a solid indium sulfate can be anhydrous, or take the form of a pentahydrate with five water molecules or a nonahydrate with nine molecules of water. Indium sulfate is used in the production of indium or indium containing substances. Indium sulfate also can be found in basic salts, acidic salts or double salts including indium alum.
Ammonium dichromate is an inorganic compound with the formula (NH4)2Cr2O7. In this compound, as in all chromates and dichromates, chromium is in a +6 oxidation state, commonly known as hexavalent chromium. It is a salt consisting of ammonium ions and dichromate ions.
Ammonium heptamolybdate is the inorganic compound whose chemical formula is (NH4)6Mo7O24, normally encountered as the tetrahydrate. A dihydrate is also known. It is a colorless solid, often referred to as ammonium paramolybdate or simply as ammonium molybdate, although "ammonium molybdate" can also refer to ammonium orthomolybdate, (NH4)2MoO4, and several other compounds. It is one of the more common molybdenum compounds.
Isostructural chemical compounds have similar chemical structures. "Isomorphous" when used in the relation to crystal structures is not synonymous: in addition to the same atomic connectivity that characterises isostructural compounds, isomorphous substances crystallise in the same space group and have the same unit cell dimensions. The IUCR definition used by crystallographers is:
Two crystals are said to be isostructural, if they have the same structure, but not necessarily the same cell dimensions nor the same chemical composition, and with a 'comparable' variability in the atomic coordinates to that of the cell dimensions and chemical composition. For instance, calcite CaCO3, sodium nitrate NaNO3 and iron borate FeBO3 are isostructural. One also speaks of isostructural series, or of isostructural polymorphs or isostructural phase transitions. The term isotypic is synonymous with isostructural.
Americium(III) iodide or americium triiodide is the chemical compound, a salt composed of americium and iodine with the formula AmI3.
Plutonium (IV) nitrate is an inorganic compound, a salt of plutonium and nitric acid with the chemical formula Pu(NO3)4. The compound dissolves in water and forms crystalline hydrates as dark green crystals.
Rhenium compounds are compounds formed by the transition metal rhenium (Re). Rhenium can form in many oxidation states, and compounds are known for every oxidation state from -3 to +7 except -2, although the oxidation states +7, +4, and +3 are the most common. Rhenium is most available commercially as salts of perrhenate, including sodium and ammonium perrhenates. These are white, water-soluble compounds. The tetrathioperrhenate anion [ReS4]− is possible.
Actinium compounds are compounds containing the element actinium (Ac). Due to actinium's intense radioactivity, only a limited number of actinium compounds are known. These include: AcF3, AcCl3, AcBr3, AcOF, AcOCl, AcOBr, Ac2S3, Ac2O3, AcPO4 and Ac(NO3)3. Except for AcPO4, they are all similar to the corresponding lanthanum compounds. They all contain actinium in the oxidation state +3. In particular, the lattice constants of the analogous lanthanum and actinium compounds differ by only a few percent.
Lithium hexafluorotitanate is an inorganic compound of lithium, fluorine, and titanium with the chemical formula Li2TiF6.
Lithium hexafluorostannate is an inorganic chemical compound with the chemical formula Li2SnF6.
Ammonium hexafluorovanadate is an inorganic chemical compound with the chemical formula (NH4)3VF6.
Ammonium hexafluorochromate is an inorganic chemical compound with the chemical formula (NH4)3CrF6.
Ammonium hexachlorostannate is an inorganic chemical compound with the chemical formula (NH4)2SnCl6.
Ammonium hexafluorogermanate is an inorganic chemical compound with the chemical formula (NH4)2GeF6.
Ammonium hexafluoroindate is an inorganic chemical compound with the chemical formula (NH4)3InF6.
Ammonium hexafluoroniobate is an inorganic chemical compound with the chemical formula NH4NbF6.
Ammonium hexafluorogallate is an inorganic chemical compound with the chemical formula (NH4)3GaF6.
Ammonium hexafluoroantimonate is an inorganic chemical compound with the chemical formula NH4SbF6.
Ammonium hexafluoroarsenate is an inorganic chemical compound with the chemical formula NH4AsF6.