�ber Hexafluoroplatinate (IV): Cs2 [PtF6] und Rb2 [PtF6]

Zeitschrift anorg allge chemie

Kraus

2015

We report on the single crystal structure of Na2PtF6, which was synthesized from (NH4)2PtCl6 and NaCl in a flow of 10 % F2 in argon. The light yellow compound crystallizes in the Na2SiF6 structure type with the trigonal space group P321 and the lattice parameters a = 9.2981(2), c = 5.1147(1) Å, and V = 382.95(1) Å3 at 123 K with Z = 3. Na2PtF6 reacts with liquid ammonia yielding bis triamminesodium hexafluoridoplatinate(IV) [Na(NH3)3]2[PtF6]. It crystallizes in the monoclinic space group C2/c with a = 14.0508(4), b = 8.4894(1), c = 12.8820(4) Å, β = 120.495(4)°, and V = 1324.05(6) Å3 at 123 K with Z = 4. In contrast to the aqueous system, the solvolysis in NH3 does not lead to the cleavage of the Pt–F bonds, at least not at the temperatures employed in this study.

Section: Introductionmentioning

confidence: 99%

Na₂PtF₆, its Crystal Structure, Characterization, and Ammonolysis to [Na(NH₃)₃]₂[PtF₆]

Rudel

Zeitschrift anorg allge chemie

Kraus

2015

Fluoride mit Kupfer, Silber, Gold und Palladium

1987

Angewandte Chemie

Professor Rudolf Hoppe zum 65. Geburtstag gewidmetFluor, das weitaus reaktivste aller Nichtmetalle, vermag rnit fast allen Elementen (auBer (bislang): He, Ne, Ar) bereits unter vergleichsweise ,,milden" Bedingungen zahlreiche Verbindungen zu bilden, die meist sowohl in ihrer Zusammensetzung und Struktur als auch in ihren chemischen und physikalischen Eigenschaften deutlich von jenen der schweren Homologen abweichen. So sind beispielsweise Fluoride mit Elementen in hohen (oft maximalen) Oxidationsstufen im allgemeinen recht einfach zuganglich (z. B. AgF,, CsAgF,, PdF3, CsAuF,), wahrend man die formelgleichen Chloride, Bromide oder gar Iodide hingegen oft (noch) gar nicht kennt. Umgekehrt bereitet die Synthese von Fluoriden rnit Elementen in mittleren oder niedrigen Oxidationsstufen (wenn iiberhaupt darstellbar, z. B. CuF, AuF, PtF2, SeF2) oft betrachtliche Schwierigkeiten. Schliealich gibt es auch einige Beispiele fur Verbindungen MX,, die mit X = F ,,stabil", mit X = CI dagegen unbestandig oder leicht zersetzlich sind (z. B. CoF3/CoCI,, VF4/VCI4, PbF4/PbC14, AsF,/AsC15). Fluorverbindungen verdienen somit durchaus allgemeineres Interesse.

Fluorides of Copper, Silver, Gold, and Palladium

Angew. Chem. Int. Ed. Engl.

1987

Dedicated to Professor Rudolf Hoppe on the occasion of his 65th birthdayFluorine, by far the most reactive of the non-metals, is capable of forming a large number of compounds with nearly all other elements (exceptions (so far): He, Ne, and Ar), even under comparatively "mild" reaction conditions. These compounds usually differ markedly from those of the heavier halogens in composition, structure, and chemical and physical properties. Thus, for example, it is generally quite easy to prepare fluorides containing elements in high oxidation states (often their maximum), as in AgF,, CsAgF4, PdF3, CsAuF, etc., whereas the corresponding chlorides, bromides or iodides are in many cases (still) unknown. Conversely, the synthesis of fluorides containing these elements in middle or low oxidation states often meets with considerable difficulty, even where it is possible at all, as, e.g., in the case of CuF, AuF, PtF,, SeF,. Finally, there are also some examples of compounds MX,, which with X = F are stable, but with X = C1 are unstable or decompose easily (e.g. CoFJCoCI,, VF4/VC14, PbF4/PbC14, AsF,/AsCI,). Consequently, fluorine compounds are of great general interest.