PLATINUM HEXAFLUORIDE¹

Revising the Highest Oxidation States of the 5d Elements: The Case of Iridium(+VII)

“…These computational results suggest a possible pathway to obtain Ir VII . Interestingly, in contrast to several known [KrF][MF 6 ] complexes of platinum and gold, [24][25][26] and in spite of the existence of [XeF][IrF 6 ], [24] observation of [KrF][IrF 6 ] has never been reported.…”

“…[6] The isolation of [AuF 7 ], claimed almost 20 years ago, [7] has recently been shown by high-level quantum chemical calculations to be highly improbable. [8] As the existence of [AuF 6 ] is also unlikely, [8] oxidation state + V remains the highest oxidation state of gold that is known beyond doubt.…”

Die höchsten Oxidationszustände der 5d‐Elemente: der Fall Iridium(+VII)

“…Die höchsten Oxidationsstufen der auf Osmium folgenden Übergangsmetalle wurden in den Hexafluoriden des Iridiums und Platins, [IrF 6 ] [5] und [PtF 6 ], [6] gefunden. Die behauptete Isolierung von [AuF 7 ] vor fast 20 Jahren [7] wurde kürzlich durch genaue quantenchemische Rechnungen wiAbbildung 1.…”

A Facile Synthesis of Pure O2PtF6

“…Reactions using PtF 6 as a starting material require its demanding synthesis. [7,8] A structure determination of the cubic phase of O 2 PtF 6 had only been possible on powder X-ray and neutron diffraction data, before Müller and co-workers obtained single crystals in a high pressure synthesis requiring a special autoclave technique for the handling of fluorine under 300 bar of pressure at temperatures of 400°C. [3,9,10] The structure of the low temperature rhombohedral phase, observed by Bartlett, has not been elucidated yet.…”