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Potassium pentasulphide

The alkali pentasulphides.—J. J. Berzelius 5 prepared potassium pentasulphide,... [Pg.636]

Uranium Oxysulphide, U3O2S4 or UO3.2US2, is formed when uranous oxide, urano-uranic oxide, or ammonium uranate is heated in a stream of hydrogen sulphide or carbon disulphide vapour when one of the oxides is heated with a mixture of ammonium chloride and sulphur or when uranyl sulphate is heated in hydrogen or with potassium pentasulphide. It is a greyish-black powder, which is decomposed by nitric acid %vith deposition of sulphur. [Pg.314]

Z = 8. The structure is built up of unbranched S ions surrounded by Na+ ions. The distance between different S ions was found to be about 3.60 A. The S ions lie on a two-fold axis, with sulphur-sulphur bond distances of 2.074 A (end), and 2.061 A (middle), a SSS bond angle of 109.76°, and a dihedral angle of 97.81°. The sodium-sulphur polyhedra co-ordination consists of two types, a distorted tetrahedron, with two pairs of distances of 2.826 and 2.842 A, and a distorted octahedron, with three pairs of distances of 2.887, 3.043, and 3.081 A. The potassium pentasulphide KgSg has been prepared by the reactions ... [Pg.578]

See other pages where Potassium pentasulphide is mentioned: [Pg.637]    [Pg.637]    [Pg.637]    [Pg.638]    [Pg.638]    [Pg.638]    [Pg.639]    [Pg.639]    [Pg.639]    [Pg.640]    [Pg.644]    [Pg.637]    [Pg.637]    [Pg.637]    [Pg.638]    [Pg.638]    [Pg.638]    [Pg.639]    [Pg.639]    [Pg.639]    [Pg.640]    [Pg.644]    [Pg.135]    [Pg.309]    [Pg.55]   
See also in sourсe #XX -- [ Pg.172 ]



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