Tungsten tetrafluoride

Tungsten tetrafluoride [13766-47-7], WF4, is a nonvolatile, hygroscopic, reddish-brown solid. It has been prepared in low yields by the reduction of... 

Miscellaneous derivatives are hydrolyzed back to the starting carbonyl compounds. Hienylhydtazones of ketones are converted into the parent ketones tqion treatment with manganese dioxide.Tosylhydra-zones react with molybdenyl chloride or tungsten tetrafluoride to give both aldehydes and ketones. Sodium peroxide converts aldoximes into carboxylic acids. 

Suljur hexafluoride (SF(). At 500-700 °C the ternary compound WSF4 is formed, besides tungsten tetrafluoride 3W + 2SF -> 2WSF4 + WF4. 

VCI3 VANADIUM TRICHLORIDE 1768 WOF4 TUNGSTEN TETRAFLUORIDE OXIDE 1813... 

VCI4 VANADIUM TETRACHLORIDE 1769 WOF4[g] TUNGSTEN TETRAFLUORIDE OXIDE (GAS) 1814... 

In agreement with earlier work, tellurium tetrafluoride oxide dimer has been found to be strongly oxygen-bridged, in sharp contrast to tungsten tetrafluoride oxide, which is weakly fluorine-bridged in the solid state but which readily dissociates to a square-pyramidal monomer. Despite variable-temperature i.r. and Raman studies, no trace of reversible equilibria involving a terminal Te—O bond was detected... 

Tungsten tetrabromide oxide, 0294 Undecaamminetetraruthenium dodecaoxide, 4598 Xenon difluoride dioxide, 4322 Xenon tetrafluoride oxide, 4346 Zinc ethylsulfinate, 1711... 

Dimethyl sulfoxide reacts exothermically with tungsten(VI) fluoride to give a viscous oil which could be a complex, and from which a low yield of bis(fluoromethyl) ether can be obtained 44 sulfur tctrafluoride gives the same product, but in good yield. Also like sulfur tetrafluoride, tungsten(VI) fluoride will cleave45 sulfites [(RO)2SO] into fluorosulfites (ROSOF) at 0 C. 

The oxide tetrafluorides and dioxide difluorides of molybdenum and tungsten are the most studied transition-metal oxide fluorides, and their preparation and properties are discussed separately below. 

Suspensions of R-NiFs at 20 °C slowly evolve F2 over several days to give yellow-brown NiF2. This loss of F2 in aHF at 20 °C may be the cause of the formation of a hexagonal tungsten bronze form of the trifluoride (H-NiFt) when the tetrafluoride is decomposed, in aHF, at 20 °C rather than at 0 °C ... 

N. Bartlett and P. L. Robinson, Fluorination of the Trioxides of Chromium, Molybdenum, Tungsten and Uranium by Selenium Tetrafluoride, J. Chem. Soc. (1961) 3549-3550. 

F4OW, Tungsten fluoride oxide, 24 37 F4SE, Selenium tetrafluoride, 24 28 FsCJH, Benzene, pentafluoro-cobalt complexes, 23 23-25 lithium and thallium complexes, 21 71,... 

Infrared spectra of 1 1 adducts of xenon difluoride with molybdenum and tungsten hexafluorides and 2 1 adducts with tin, zirconium and hafnium tetrafluorides have been assigned on the basis of their containing [XeF]+ cations [XeF]+[MF6]2-(M = Ti, Zr, Hf) 84-85>. This is supported in the case of 2 XeF2 SnF4 by Mossbauer work 86). Data on nXeF2 TiF4 (n = 1.5, 1 and 0.5) are less well defined 87). 

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