Platinum hexafluoride, structure

Hexadiene complexes with gold, 12 348 with iron, 12 263, 264 with platinum, 12 319 with rhodium, 12 297-299 with silver, 12 340 Hexafluorides, structures, 27 106-108 Hexafluoroacetone, 30 223-312, 44 317-318 metal complexes, 30 279-298 of cobalt, 30 286-287 of gold, 30 295... 

The discovery of dioxygenyl hexafluoroplatinate(v), revealed the remarkable oxidizing properties of platinum hexafluoride. The crystal structure and m netic, spectroscopic , and chemical properties of 02PtFe all point to the ionic formulation OJ [PtFel". 

Attempts to confirm the existence of platinum difluoride have been unsuccessful. Platinum tetrafluoride has been shown to be diamagnetic when pure. Although it is not isomorphous with any known tetrafluoride it is apparently related structurally to uranium tetrachloride. The quinque-positive oxidation state of platinum has been established in the simple fluoride, the salts potassium hexafluoroplatinate(v) and dioxygenyl hexa-fluoroplatinate(v), and in the adducts ClFj.PtFj and IFj.PtFj. Platinum hexafluoride has been briefly investigated. 

In 1958, the fluoride long known[l] as OsFg was shown by Weinstock and Malm [2] to be OsFg and, in 1965, the fluoride of iridium, reported [3,4] on two occasions to be a tetraflu.oride was shown [5] by Bartlett and Rao to be a pentafiuoride. New hexafluorides [4,6-8] and pentafiuorides[9-ll] (in addition to RuFj which had long been known) have now established hexafluorides and pentafluorides for all of the platinum metals other than palladium. Moreover, the trifluorides, RuFj, RhFr, PdFi and IrFr have been established by X-ray crystal structure analysis [12] although that of palladium has been shown [13] to be the mixed oxidation state compound Pd(II) Pd(IV)F6. So far only one di-fluoride of the platinum metals, PdF2, has been reported[14-16]. 

Platinum(V) fluoride is a tetramer (structurally like 22.5) PtFg is a red solid and has a molecular structure consisting of octahedral molecules neutron powder diffraction data confirm little deviation from an ideal octahedral structure. The hexafluoride is a very powerful oxidizing agent (equation 22.127, and see Section 5.16) and attacks glass. The oxidizing power of the second row rZ-block hexafluorides... 

---