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Chromium(II) chloride describes inorganic compounds with the formula Cr Cl 2 (H 2 O) n. The anhydrous solid is white when pure, however commercial samples are often grey or green; it is hygroscopic and readily dissolves in water to give bright blue air-sensitive solutions of the tetrahydrate Cr(H 2 O) 4 Cl 2 .
Chromium(III) chloride (also called chromic chloride) is an inorganic chemical compound with the chemical formula Cr Cl 3.It forms several hydrates with the formula CrCl 3 ·nH 2 O, among which are hydrates where n can be 5 (chromium(III) chloride pentahydrate CrCl 3 ·5H 2 O) or 6 (chromium(III) chloride hexahydrate CrCl 3 ·6H 2 O).
Chromium compounds are compounds containing the element chromium (Cr). Chromium is a member of group 6 of the transition metals. The +3 and +6 states occur most commonly within chromium compounds, followed by +2; charges of +1, +4 and +5 for chromium are rare, but do nevertheless occasionally exist. [3] [4]
chromium(II) bromide: 10049–25–9 CrBr 3: chromium(III) bromide: 10031–25–1 CrBr 4: chromium(IV) bromide: 23098–84–2 Cr(C 6 H 4 NO 2) 3: chromium(III) picolinate: 14639–25–9 Cr(CO) 6: chromium(VI) carbonyl: 13007–92–6 CrCl 2: chromium(II) chloride: 10049–05–5 CrCl 3: chromium(III) chloride: 10025–73–7 CrCl 4: chromium ...
Chromium chloride may refer to: Chromium(II) chloride, also known as chromous chloride; Chromium(III) chloride, also known as chromic chloride or chromium trichloride;
Chromium(IV) chloride (Cr Cl 4) is an unstable chromium compound. It is generated by combining chromium(III) chloride and chlorine gas at elevated temperatures, but reverts to those substances at room temperature. [2] [3]
The anhydrous salt forms green crystals and is very soluble in water (in contrast to anhydrous chromium(III) chloride which dissolves very slowly except under special conditions). At 100 °C it decomposes. The red-violet hydrate is highly soluble in water. Chromium nitrate is used in the production of alkali metal-free catalysts and in pickling.
Prior to the introduction of this chromium-based protocol, olefination reactions generally gave Z alkenes or mixtures of isomers. [1] Similar olefination reactions had been performed using a variety of reagents such as zinc and lead chloride; [5] however, these olefination reactions often lead to the formation of diols—the McMurry reaction—rather than the methylenation or alkylidenation of ...