Krypton difluoride
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| Krypton difluoride | |
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| General | |
| Systematic name | krypton(II) fluoride |
| Other names | krypton difluoride, krypton fluoride |
| Molecular formula | KrF2 |
| Molar mass | 121.7968 g mol−1 |
| Appearance | colourless solid |
| CAS number | [13773-81-4] |
| Properties | |
| Density and phase | ? g/cm³, ? |
| Solubility in water | ? g/100 ml (?°C) |
| Melting point | ?°C (? K) |
| Boiling point | ?°C (? K) |
| Structure | |
| Molecular shape | linear |
| Crystal structure | ? |
| Dipole moment | 0 D |
| Hazards | |
| MSDS | External MSDS |
| Main hazards | ? |
| NFPA 704 | |
| Flash point | ? °C |
| R/S statement | R: ? S: ? |
| RTECS number | ? |
| Supplementary data page | |
| Structure and properties |
n, εr, etc. |
| Thermodynamic data |
Phase behaviour Solid, liquid, gas |
| Spectral data | UV, IR, NMR, MS |
| Related compounds | |
| Other krypton compounds | Kr(OTeF5)2 |
| Related fluorides | XeF2 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Krypton difluoride, KrF2, was the first compound of krypton discovered.[1] It is a volatile, colourless solid. The structure of the KrF2 molecule is linear, with Kr−F distances of 188.9 pm. It reacts with strong Lewis acids to form salts of the KrF+ and Kr2F3+ cations.[2]
Contents |
[edit] Related compounds
- xenon difluoride, XeF2
[edit] References
- ^ Grosse, A. V.; Kirschenbaum, A. D.; Streng, A. G.; Streng, L. V. "Krypton Tetrafluoride: Preparation and Some Properties" Science, 1963, volume 139, pages 1047-1048. DOI:10.1126/science.139.3559.1047.
- ^ Lehmann, J. F.; Dixon, D. A.; Schrobilgen, G. J. "X-ray Crystal Structures of α-KrF2, [KrF][MF6] (M = As, Sb, Bi), [Kr2F3][SbF6].KrF2, [Kr2F3]2[SbF6]2.KrF2, and [Kr2F3][AsF6].[KrF][AsF6]; Synthesis and Characterization of [Kr2F3][PF6].nKrF2; and Theoretical Studies of KrF2, KrF+, Kr2F3+, and the [KrF][MF6] (M = P, As, Sb, Bi) Ion Pairs” Inorganic Chemistry 2001, volume 40, pages 3002-3017. DOI:10.1021/ic001167w
[edit] General reading
- Greenwood, N. N.; A. Earnshaw (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.
[edit] External links
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