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Hexafluoroplatinate
A hexafluoroplatinate is a chemical compound which contains the hexafluoroplatinate anion. It is produced by combining substances with platinum hexafluoride. Examples of hexafluoroplatinates * Dioxygenyl hexafluoroplatinate (O2PtF6), containing the rare dioxygenyl oxycation. * Xenon hexafluoroplatinate ("XePtF6"), the first noble gas compound ever synthesised. (The Xe+ ion in XePtF6 is unstable, being a radical; as a result, XePtF6 itself is unstable and quickly disproportionates In chemistry, disproportionation, sometimes called dismutation, is a redox reaction in which one compound of intermediate oxidation state converts to two compounds, one of higher and one of lower oxidation state. The reverse of disproportionatio ... into XeFPtF5, XeFPt2F11, and Xe2F3PtF6.)Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. . See also * Hexachloroplatinate References Anions Fluorometallates {{Inorganic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PtF6
Platinum hexafluoride is the chemical compound with the formula Pt F6, and is one of seventeen known binary hexafluorides. It is a dark-red volatile solid that forms a red gas. The compound is a unique example of platinum in the +6 oxidation state. With only four d-electrons, it is paramagnetic with a triplet ground state. PtF6 is a strong fluorinating agent and one of the strongest oxidants, capable of oxidising xenon and O2. PtF6 is octahedral in both the solid state and in the gaseous state. The Pt-F bond lengths are 185 picometers. Synthesis PtF6 was first prepared by reaction of fluorine with platinum metal. This route remains the method of choice. :Pt + 3 F2 → PtF6 PtF6 can also be prepared by disproportionation of the pentafluoride ( PtF5), with the tetrafluoride ( PtF4) as a byproduct. The required PtF5 can be obtained by fluorinating PtCl2: :2 PtCl2 + 5 F2 → 2 PtF5 + 2 Cl2 :2 PtF5 → PtF6 + PtF4 Hexafluoroplatinates Platinum hexafluoride can gain an electron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platinum Hexafluoride
Platinum hexafluoride is the chemical compound with the formula Pt F6, and is one of seventeen known binary hexafluorides. It is a dark-red volatile solid that forms a red gas. The compound is a unique example of platinum in the +6 oxidation state. With only four d-electrons, it is paramagnetic with a triplet ground state. PtF6 is a strong fluorinating agent and one of the strongest oxidants, capable of oxidising xenon and O2. PtF6 is octahedral in both the solid state and in the gaseous state. The Pt-F bond lengths are 185 picometers. Synthesis PtF6 was first prepared by reaction of fluorine with platinum metal. This route remains the method of choice. :Pt + 3 F2 → PtF6 PtF6 can also be prepared by disproportionation of the pentafluoride ( PtF5), with the tetrafluoride ( PtF4) as a byproduct. The required PtF5 can be obtained by fluorinating PtCl2: :2 PtCl2 + 5 F2 → 2 PtF5 + 2 Cl2 :2 PtF5 → PtF6 + PtF4 Hexafluoroplatinates Platinum hexafluoride can gain an elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenon Hexafluoroplatinate
Xenon hexafluoroplatinate is the product of the reaction of platinum hexafluoride with xenon, in an experiment that proved the chemical reactivity of the noble gases. This experiment was performed by Neil Bartlett at the University of British Columbia, who formulated the product as "Xe+ tF6sup>−", although subsequent work suggests that Bartlett's product was probably a salt mixture and did not in fact contain this specific salt. Preparation "Xenon hexafluoroplatinate" is prepared from xenon and platinum hexafluoride (PtF6) as gaseous solutions in SF6. The reactants are combined at 77 K and slowly warmed to allow for a controlled reaction. Structure The material described originally as "xenon hexafluoroplatinate" is probably not Xe+ tF6sup>−. The main problem with this formulation is "Xe+", which would be a radical and would dimerize or abstract a fluorine atom to give XeF+. Thus, Bartlett discovered that Xe undergoes chemical reactions, but the nature and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexachloroplatinate
Hexachloroplatinate is an anion with the chemical formula tCl6sup>2−. Chemical compounds containing the hexachloroplatinate anion include: *Chloroplatinic acid (or dihydrogen hexachloroplatinate), H2PtCl6 *Ammonium hexachloroplatinate, (NH4)2PtCl6 *Potassium hexachloroplatinate, K2PtCl6 * Sodium hexachloroplatinate, Na2PtCl6 Related compounds/anions *The unstable hexachloropalladic acid (H2PdCl6) *Hexachloropalladate () *Hexafluoroplatinate A hexafluoroplatinate is a chemical compound which contains the hexafluoroplatinate anion. It is produced by combining substances with platinum hexafluoride. Examples of hexafluoroplatinates * Dioxygenyl hexafluoroplatinate (O2PtF6), containing ... () Anions Inorganic chlorine compounds Platinum(IV) compounds Chloro complexes Chlorometallates {{inorganic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluoroanion
In chemistry, a fluoroanion or fluorometallate anion is a polyatomic anion that contains one or more fluorine atoms. The ions and salts form from them are also known as complex fluorides. They can occur in salts, or in solution, but seldom as pure acids. Fluoroanions often contain elements in higher oxidation states. They mostly can be considered as fluorometallates, which are a subclass of halometallates. Anions that contain both fluorine and oxygen can be called "oxofluoroanions" (or rarely "fluorooxoanions"). The following is a list of fluoroanions in atomic number order. * trifluoroberyllate * tetrafluoroberyllate * tetrafluoroborate * magnesium tetrafluoride * trifluoroaluminate * tetrafluoroaluminate * pentafluoroaluminate * hexafluoroaluminate * heptafluoroaluminate *hexafluorosilicate *hexafluorophosphate Hexafluorophosphate is an fluoroanion, anion with chemical formula of . It is an Octahedral molecular geometry, octahedral species that imparts no color to its sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioxygenyl Hexafluoroplatinate
Dioxygenyl hexafluoroplatinate is a compound with formula O2PtF6. It is a hexafluoroplatinate of the unusual dioxygenyl cation, O2+, and is the first known compound containing this cation. It can be produced by the reaction of dioxygen with platinum hexafluoride. The fact that is strong enough to oxidise , whose first ionization potential is 12.2 eV, led Neil Bartlett to correctly surmise that it might be able to oxidise xenon (first ionization potential 12.13 eV). This led to the discovery of xenon hexafluoroplatinate, which proved that the noble gases, previously thought to be inert, are able to form chemical compounds. Preparation Dioxygenyl hexafluoroplatinate can be synthesized from the elements by the action of a mixture of oxygen and fluorine gas on platinum sponge at 450 °C. It can also be prepared by the reaction of oxygen difluoride () with platinum sponge. At 350 °C, platinum tetrafluoride is produced; above 400 °C, dioxygenyl hexaf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioxygenyl
The dioxygenyl ion, , has been studied in both the gas phase and in salts with anions that cannot be oxidized. The first synthesis was []. Rather than the triple bond of , the bond order is considered to be . Relative to most molecules, this ionization energy is very high at 1175 kJ/mol.Michael Clugston; Rosalind Flemming (2000). ''Advanced Chemistry'', Oxford University Press, , , p. 355. As a result, the scope of the chemistry of is quite limited, acting mainly as a 1-electron oxidiser. Structure and molecular properties has a bond order of 2.5, and a bond length of 112.3 pm in solid O2[AsF6]. It is isoelectronic with nitric oxide and is paramagnetic. The bond energy is 625.1 kJ mol−1 and the stretching frequency is 1858 wavenumber, cm−1, both of which are high relative to most of the molecules. Synthesis Neil Bartlett (chemist), Neil Bartlett demonstrated that dioxygenyl hexafluoroplatinate (O2PtF6), containing the dioxygenyl cation, can be prepared at room tempera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxycation
In chemistry, an oxycation is an ion with the generic formula (where A represents a chemical element and O represents an oxygen atom). They usually end with the suffix "-ium" or "-yl". However, the International Union of Pure and Applied Chemistry standard book on nomenclature of inorganic chemistry does not mention "oxycation". Examples * * and See also *Oxyanion An oxyanion, or oxoanion, is an ion with the generic formula (where A represents a chemical element and O represents an oxygen atom). Oxyanions are formed by a large majority of the chemical elements. The formulae of simple oxyanions are determine ... * List of aqueous ions by element References Cations {{Inorganic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noble Gas Compound
In chemistry, noble gas compounds are chemical compounds that include an element from the noble gases, group 8 or 18 of the periodic table. Although the noble gases are generally unreactive elements, many such compounds have been observed, particularly involving the element xenon. From the standpoint of chemistry, the noble gases may be divided into two groups: the relatively reactive krypton ( ionisation energy 14.0 eV), xenon (12.1 eV), and radon (10.7 eV) on one side, and the very unreactive argon (15.8 eV), neon (21.6 eV), and helium (24.6 eV) on the other. Consistent with this classification, Kr, Xe, and Rn form compounds that can be isolated in bulk at or near standard temperature and pressure, whereas He, Ne, Ar have been observed to form true chemical bonds using spectroscopic techniques, but only when frozen into a noble gas matrix at temperatures of or lower, in supersonic jets of noble gas, or under extremely high pressures with metal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radical (chemistry)
In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron. With some exceptions, these unpaired electrons make radicals highly chemically reactive. Many radicals spontaneously dimerize. Most organic radicals have short lifetimes. A notable example of a radical is the hydroxyl radical (HO·), a molecule that has one unpaired electron on the oxygen atom. Two other examples are triplet oxygen and triplet carbene (꞉) which have two unpaired electrons. Radicals may be generated in a number of ways, but typical methods involve redox reactions. Ionizing radiation, heat, electrical discharges, and electrolysis are known to produce radicals. Radicals are intermediates in many chemical reactions, more so than is apparent from the balanced equations. Radicals are important in combustion, atmospheric chemistry, polymerization, plasma chemistry, biochemistry, and many other chemical processes. A majority ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disproportionation
In chemistry, disproportionation, sometimes called dismutation, is a redox reaction in which one compound of intermediate oxidation state converts to two compounds, one of higher and one of lower oxidation state. The reverse of disproportionation, such as when a compound in an intermediate oxidation state is formed from precursors of lower and higher oxidation states, is called ''comproportionation'', also known as ''symproportionation''. More generally, the term can be applied to any desymmetrizing reaction where two molecules of one type react to give one each of two different types: : This expanded definition is not limited to redox reactions, but also includes some molecular autoionization reactions, such as the self-ionization of water. In contrast, some authors use the term ''redistribution'' to refer to reactions of this type (in either direction) when only ligand exchange but no redox is involved and distinguish such processes from disproportionation and comproportionati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anions
An ion () is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convention. The net charge of an ion is not zero because its total number of electrons is unequal to its total number of protons. A cation is a positively charged ion with fewer electrons than protons (e.g. K+ ( potassium ion)) while an anion is a negatively charged ion with more electrons than protons (e.g. Cl− ( chloride ion) and OH− (hydroxide ion)). Opposite electric charges are pulled towards one another by electrostatic force, so cations and anions attract each other and readily form ionic compounds. Ions consisting of only a single atom are termed ''monatomic ions'', ''atomic ions'' or ''simple ions'', while ions consisting of two or more atoms are termed polyatomic ions or ''molecular ions''. If only a + or − is present, it indica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
