 | |||
| |||
| Names | |||
|---|---|---|---|
| IUPAC name N,N,N-Trimethylmethanaminium pentafluoridoxenonate(−) | |||
| Other names Tetramethylammonium pentafluoroxenate(IV) | |||
| Identifiers | |||
3D model (JSmol) | |||
| ChemSpider | |||
| |||
| |||
| Properties | |||
| [N(CH3)4][XeF5] | |||
| Molar mass | 300.4308 g/mol | ||
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |||
 | This articleneeds additional citations forverification. Please helpimprove this article byadding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Tetramethylammonium pentafluoroxenate" – news ·newspapers ·books ·scholar ·JSTOR(April 2021) (Learn how and when to remove this message) |
Tetramethylammonium pentafluoroxenate is achemical compound with thechemical formula[N(CH3)4]+[XeF5]−. Thissalt consists oftetramethylammoniumcations[N(CH3)4]+ and pentafluoroxenate(IV)anions[XeF5]−. The[XeF5]− ion was the first example of apentagonal planar molecular geometryAX5E2 species.[1] It was prepared by the reaction of[N(CH3)4]F withxenon tetrafluoride,[N(CH3)4]F being chosen because it can be prepared in anhydrous form and is readily soluble in organic solvents.[1] The anion is planar, with the fluorine atoms in a slightly distorted pentagonal coordination (Xe–F bond lengths 197.9–203.4 pm, and F–X–F bond angles 71.5°–72.3°).[1] Other salts have been prepared with sodium, caesium and rubidium, and vibrational spectra show that these contain the same planar ion.[1] The isolated anion has thepoint group ofD5h.[1]
