Über das elektrolytische Leitvermögen geschmolzener Chloride

50 Jahre “Chemie in unserer Zeit”

“…42 %) that may indicate a reformation of crystalline PrCl 3 . The approval of the latter interpretation is supported by the endothermic signal 4 at 755 °C, which roughly matches with the melting point reported for PrCl 3 (785 °C) 18. Additionally, this assumption is supported by a temperature dependent X‐ray powder diffraction pattern (see Figure S3, Supporting Information).…”

“…This observation may reveal that LaCl 3 is recovered. Further proof of this interpretation is given by the endothermic signal 3 at 830 °C, that fits roughly with the melting point of LaCl 3 (860 °C) 18. Furthermore, this result is supported by temperature dependent X‐ray powder diffraction (see Figure 6).…”

Electrospray ionization mass spectrometric characterization of key Te(IV) cationic intermediates for the addition of TeCl4 to alkynes

“…For TeCl 4 , its dipole moment in benzene solution,29, 30 its solubility in nonpolar solvents, its nuclear quadrupole resonance spectrum,31 and its Raman and infrared spectra32, 33 have all been presented as evidence for its molecular nature. However, molten TeCl 4 conducts electricity,34 whereas the Raman and far‐infrared spectra on molten, solid, and dissolved TeCl 4 have been most often interpreted as being consistent with the ionic formulation [TeCl 3 ] + Cl − . [TeCl 3 ] + has been isolated in the form of a complex with halide acceptors, such as [TeCl 3 ] + [AlCl 4 ] − 35, 36.…”

Preparation and reactions of some lower tungsten halides and halide complexes

“…Reduction of tungsten(VI) chloride with hydrogen at 200°C., according to Equation 7, results in the formation of the penta-2WC16 + H 2 = 2WCI5 + 2HC1 (7) chloride (7,8,21). The resulting product is separated from the other chlorides by sublimation in a stream of nitrogen.…”

“…The first synthesis of tungsten(IV) chloride involved the hydrogen reduction of tungsten hexachloride (7,8,21). Other methods of preparation include the chlorination of tungsten(IV) oxide with carbon tetrachloride in a sealed tube at 280°C.…”