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Tungsten hexachloride is an inorganic chemical compound of tungsten and chlorine with the chemical formula W Cl 6. This dark violet-blue compound exists as volatile crystals under standard conditions. It is an important starting reagent in the preparation of tungsten compounds. [1]
A hexachloride is a compound or ion that contains six chlorine atoms or ions. It is the highest chloride that an element can form. Common hexachlorides include: Molybdenum hexachloride, MoCl 6; Tungsten hexachloride, WCl 6; Rhenium hexachloride, ReCl 6; Uranium hexachloride, UCl 6; Some hexachloroanions are also known: Hexachloroaluminate [AlCl ...
The material is prepared by reduction of tungsten hexachloride. One method involves the use of tetrachloroethylene as the reductant [2] 2 WCl 6 + C 2 Cl 4 → W 2 Cl 10 + C 2 Cl 6. The blue green solid is volatile under vacuum and slightly soluble in nonpolar solvents. The compound is oxophilic and is highly reactive toward Lewis bases.
A typical reduction reaction is the conversion of tungsten hexachloride to the tetrachloride using the silylated pyrazine reagent: Me 3 SiNC 4 Me 4 NSiMe 3 + WCl 6 + 2 thf → NC 4 Me 4 N + 2 Me 3 SiCl + WCl 4 (thf) 2
The latter cation is formed by the reaction of tellurium with tungsten hexachloride: [38] ... Lead telluride exhibits promise in far-infrared detectors. [11]
Tungsten-halogen lamps are frequently used as a near-infrared light source in Infrared spectroscopy. Halogen lamps were used on the Times Square Ball from 1999 to 2006. However, from 2007 onward, the halogen lamps were replaced with LEDs, due to the much longer lifespan, about ten times longer for LED over incandescent. [32]
Examples include MCl 6 (M = Mo, W), [MCl 6] − (M = Nb, Ta, Mo, W, Re), [MCl 6] 2-(M = Ti Zr, Hf, Mo, Mn, Re, Ir, Pd, Pt), and [MCl 6] 3-(M = Ru Os, Rh, Ir). In chemistry, a transition metal chloride complex is a coordination complex that consists of a transition metal coordinated to one or more chloride ligand. The class of complexes is ...
Tungsten(VI) fluoride, also known as tungsten hexafluoride, is an inorganic compound with the formula W F 6. It is a toxic, corrosive, colorless gas, with a density of about 13 kg/m 3 (22 lb/cu yd) (roughly 11 times heavier than air). [2] [3] It is the densest known gas under standard ambient temperature and pressure (298 K, 1 atm). [4]
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