Neptunium(VI) fluoride: Difference between revisions
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'''Neptunium hexafluoride''' is the highest fluoride of [[Neptunium]]. It is an orange volatile crystalline solid.<ref name="GMELIN_108_114"/> It is relatively hard to handle, being very corrosive and radioactive. It is prepared by fluorination of [[Neptunium(IV) fluoride]] |
'''Neptunium hexafluoride''' (NpF<sub>6</sub>) is the highest fluoride of [[Neptunium]]. It is an orange volatile crystalline solid.<ref name="GMELIN_108_114"/> It is relatively hard to handle, being very corrosive and radioactive. It is prepared by fluorination of [[Neptunium(IV) fluoride]] (NpF<sub>4</sub>) by powerful fluorinating agents such as elemental fluorine.<ref name="NPF6_PREPARATION">John G. Malm, Bernard Weinstock, E. Eugene Weaver: „The Preparation and Properties of NpF<sub>6</sub>; a Comparison with PuF<sub>6</sub>“, ''[[The Journal of Physical Chemistry|J. Phys. Chem.]]'', '''1958''', ''62'' (12), p. 1506–1508 ({{DOI|10.1021/j150570a009}}).</ref> |
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:<math>\mathrm{NpF_4\ +\ F_2\ \longrightarrow \ NpF_6}</math> |
:<math>\mathrm{NpF_4\ +\ F_2\ \longrightarrow \ NpF_6}</math> |
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It can also be obtained by fluorination of [[Neptunium(III) fluoride]].<ref>Sherman Fried, Norman Davidson: „The Preparation of Solid Neptunium Compounds“, ''[[J. Am. Chem. Soc.]]'', '''1948''', ''70'' (11), p. 3539–3547 |
It can also be obtained by fluorination of [[Neptunium(III) fluoride]].<ref>Sherman Fried, Norman Davidson: „The Preparation of Solid Neptunium Compounds“, ''[[J. Am. Chem. Soc.]]'', '''1948''', ''70'' (11), p. 3539–3547 ({{DOI|10.1021/ja01191a003}}).</ref> |
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:<math>\mathrm{2\ NpF_3\ +\ 3\ F_2\ \longrightarrow \ 2\ NpF_6}</math> |
:<math>\mathrm{2\ NpF_3\ +\ 3\ F_2\ \longrightarrow \ 2\ NpF_6}</math> |
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Revision as of 19:51, 22 January 2013
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| Names | |
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| IUPAC name
Neptunium(VI) fluoride
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| Identifiers | |
3D model (JSmol)
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PubChem CID
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| Properties | |
| F6Np | |
| Molar mass | 351 g·mol−1 |
| Appearance | orange crystals |
| Melting point | 54.4 °C (129.9 °F; 327.5 K) |
| Boiling point | 55.18 °C (131.32 °F; 328.33 K) |
| Structure | |
| Orthorhombic, oP28 | |
| Pnma, No. 62 | |
| octahedral (Oh) | |
| 0 D | |
| Related compounds | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Neptunium hexafluoride (NpF6) is the highest fluoride of Neptunium. It is an orange volatile crystalline solid.[1] It is relatively hard to handle, being very corrosive and radioactive. It is prepared by fluorination of Neptunium(IV) fluoride (NpF4) by powerful fluorinating agents such as elemental fluorine.[2]
It can also be obtained by fluorination of Neptunium(III) fluoride.[3]
References
- ^ a b Gmelins Handbuch der anorganischen Chemie, System Nr. 71, Transurane, Teil C, p. 108–114.
- ^ John G. Malm, Bernard Weinstock, E. Eugene Weaver: „The Preparation and Properties of NpF6; a Comparison with PuF6“, J. Phys. Chem., 1958, 62 (12), p. 1506–1508 (doi:10.1021/j150570a009).
- ^ Sherman Fried, Norman Davidson: „The Preparation of Solid Neptunium Compounds“, J. Am. Chem. Soc., 1948, 70 (11), p. 3539–3547 (doi:10.1021/ja01191a003).