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Osmium(IV) Chloride
Osmium(IV) chloride or osmium tetrachloride is the inorganic compound composed of osmium and chlorine with the empirical formula OsCl4. It exists in two Polymorphism (materials science), polymorphs (crystalline forms). The compound is used to prepare other osmium complexes. Preparation, structure, reactions It was first reported in 1909 as the product of chlorination of osmium metal. This route affords the high temperature polymorph: :Os + 2 Cl2 → OsCl4 This reddish-black polymorph is Orthorhombic crystal system, orthorhombic and adopts a structure in which osmium centres are octahedrally coordinated, sharing opposite edges of the OsCl6 octahedra to form a chain. A brown, apparently cubic polymorph forms upon reduction of osmium tetroxide with thionyl chloride: :OsO4 + 4 SOCl2 → OsCl4 + 2 Cl2 + 4 SO2 Osmium tetraoxide dissolves in hydrochloric acid to give the hexachloroosmate anion: :OsO4 + 10 HCl → H2OsCl6 + 2 Cl2 + 4 H2O References {{Chlorides Osmium com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Orthorhombic Crystal System
In crystallography, the orthorhombic crystal system is one of the 7 crystal systems. Orthorhombic lattices result from stretching a cubic lattice along two of its orthogonal pairs by two different factors, resulting in a rectangular prism with a rectangular base (''a'' by ''b'') and height (''c''), such that ''a'', ''b'', and ''c'' are distinct. All three bases intersect at 90° angles, so the three lattice vectors remain mutually orthogonal In mathematics, orthogonality (mathematics), orthogonality is the generalization of the geometric notion of ''perpendicularity''. Although many authors use the two terms ''perpendicular'' and ''orthogonal'' interchangeably, the term ''perpendic .... Bravais lattices There are four orthorhombic Bravais lattices: primitive orthorhombic, base-centered orthorhombic, body-centered orthorhombic, and face-centered orthorhombic. For the base-centered orthorhombic lattice, the primitive cell has the shape of a right rhombic prism;See , ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
