Detail of "13520-79-1"

CAS Number:
13520-79-1
Name:
Tungsten fluoride oxide
Molecular Structure:
Formula:
F₄OW
Molecular Weight:
275.833
Synonyms:
Tungstentetrafluoride oxide;Tungsten tetrafluoride monoxide;Tungstentetrafluoride monooxide;Tungsten oxytetrafluoride;Tungsten oxyfluoride (WOF₄);Tungsten oxidetetrafluoride;Tungsten oxide fluoride (WOF₄);Tungstenfluoride (WF₄O) (6CI);Tungsten fluoride oxide (WOF₄) (8CI);Tetrafluorooxotungsten;
Melting Point:
110°C
Boiling Point:
185 °C at 760 mmHg
Appearance:
white crystal

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Mass-spectrometric study of the evaporation of tungsten oxide tetrafluoride and its mixture with niobium pentafluoride: Mass-spectrometric study of the evaporation of tungsten oxide tetrafluoride and its mixture with niobium pentafluoride. Gotkis, I. S.; Gusarov, A. V.; Gorokhov, L. N. (USSR). Zh. Neorg. Khim., 22(5), 1197-200 (Russian) 1977. CODEN: ZNOKAQ. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) Evapn. of WOF4 [13520-79-1] and its mixt. with Nb3F15 [63144-38-7] was studied by mass spectroscopy. In addn. to the dimer W2O2F8 [63144-36-5] which existed in WOF4 and in the mixt. vapor phases, the vapor of the mixt. contained NbWOF9 [63144-37-6]. The std. enthalpy of the dimer dissocn. is 15.5 .+-. 5 kcal/mole and that of NbWOF9 dissocn. is 2.3 .+-. 1.7 kcal/mole. The std. enthalpies of W2O2F8(g) and NbWOF9(g) formation are -697.5 .+-. 5.5 and -770.3 .+-. 3.1 kcal/mole, resp.

Force fields and mean amplitudes of vibration of chromium, molybdenum and tungsten oxotetrafluorides: Force fields and mean amplitudes of vibration of chromium, molybdenum and tungsten oxotetrafluorides. Kochikov, I. V.; Yagola, A. G.; Kuramshina, G. M.Some commonly used reagents like 23276-90-6 and 13520-79-1 are used in this experiment.; Kovba, V. M.; Pentin, Yu. A. (Dep. Phys., Moscow State Univ., Moscow 117234, USSR). THEOCHEM, 15(3-4), 355-60 (English) 1984. CODEN: THEODJ. ISSN: 0166-1280. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Force fields and mean amplitudes of vibration of MOF4 (M = Cr, Mo, W) were calcd. by using Tikchonov's regularization method and the results are discussed. .