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The γ polymorph of cerium(III) sulfide adopts a cation-deficient form of the Th 3 P 4 structure. 8 out the 9 metal positions in the Th 3 P 4 structure are occupied by cerium in γ-Ce 2 S 3, with the remainder as vacancies. This composition can be represented by the formula Ce 2.667 0.333 S 4.
Cerium sulfide forms yellow crystalline solid of cubic syngony crystals, space group Fm3m, cell parameter a = 0.5780 nm, Z = 4, of NaCl-type structure. [citation needed] The compound melts congruently at a temperature of 2450 °C.
Cerium(IV) oxide ("ceria") has the fluorite structure, similarly to the dioxides of praseodymium and terbium. Ceria is a nonstoichiometric compound, meaning that the real formula is CeO 2−x, where x is about 0.2. Thus, the material is not perfectly described as Ce(IV). Ceria reduces to cerium(III) oxide with hydrogen gas. [3]
Cerium sulfide may refer to: Cerium monosulfide, CeS; Cerium(III) sulfide, Ce 2 S 3 This page was last edited on 21 January 2024, at 18:17 (UTC). Text is ...
This is a list of CAS numbers by chemical formulas and chemical compounds, indexed by formula.The CAS number is a unique number applied to a specific chemical by the Chemical Abstracts Service (CAS).This list complements alternative listings to be found at list of inorganic compounds and glossary of chemical formulae
calcium sulfide hepar calcies sulfurated lime oldhamite: 20548-54-3 CaSO 3: calcium sulfite: 10257-55-3 CaSO 4: calcium sulfate: 7778-18-9 CaSO 4 · 0.5H 2 O: plaster of paris calcium sulfate hemihydrate: 10034-76-1 CaSe: calcium selenide: 1305-84-6 CaSeO 3: calcium selenite: 13780-18-2 CaSeO 4: calcium selenate: 14019-91-1 CaSiO 3: calcium ...
Cerium(III) sulfate is a hygroscopic white solid, which begins to decompose above 600°C. It has a monoclinic crystal structure. Cerium(III) sulfate tetrahydrate is a white solid that releases its water of crystallisation at 220 °C. It has (like the white octahydrate) a monoclinic crystal structure with the space group P2 1 /c (space group 14).
Cerium(IV) sulfate, also called ceric sulfate, is an inorganic compound. It exists as the anhydrous salt Ce(SO 4) 2 as well as a few hydrated forms: Ce(SO 4) 2 (H 2 O) x, with x equal to 4, 8, or 12. These salts are yellow to yellow/orange solids that are moderately soluble in water and dilute acids.