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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.
In chemistry, the molar mass (M) (sometimes called molecular weight or formula weight, but see related quantities for usage) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured in moles) of any sample of the compound. [1] The molar mass is a bulk, not molecular, property of a substance.
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.
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 ...
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]
Ammonium cerium(IV) sulfate is an inorganic compound with the formula (NH 4) 4 Ce(SO 4) 4 ·2H 2 O. It is an orange-colored solid. It is a strong oxidant, the potential for reduction is about +1.44V. Cerium(IV) sulfate is a related compound.
Cerium(III) chloride (CeCl 3), also known as cerous chloride or cerium trichloride, is a compound of cerium and chlorine. It is a white hygroscopic salt; it rapidly absorbs water on exposure to moist air to form a hydrate , which appears to be of variable composition, [ 1 ] though the heptahydrate CeCl 3 ·7H 2 O is known.