作者:C. L. Chernick、H. H. Claassen、P. R. Fields、H. H. Hyman、J. G. Malm、W. M. Manning、M. S. Matheson、L. A. Quarterman、F. Schreiner、H. H. Selig、I. Sheft、S. Siegel、E. N. Sloth、L. Stein、M. H. Studier、J. L. Weeks、M. H. Zirin
DOI:10.1126/science.138.3537.136
日期:1962.10.12
Xenon and fluorine combine readily. Xenon tetrafluoride is a colorless crystalline material, stable at room remperature. The existence of at least one other fluoride and two oxyfluorides has been demonstrated. The heaviest "inert gas," radon, also reacts with fluorine, yielding a compound less volatile than xenon tetrafluoride.
Preparation, Magnetic Properties, and Pressure-Induced Transitions of Some MIIMIVF6 (MII=Ni, Pd, Cu; MIV=Pd, Pt, Sn) Complex Fluorides
作者:Alain Tressaud、Neil Bartlett
DOI:10.1006/jssc.2001.9331
日期:2001.12
MIIMIVF6 (MII=Ni, Pd, Cu; MIV=Pd, Pt) and PdSnF6 complexfluorideshave been synthesized via different preparative methods using either BrF3 as oxidizer and solvent, or solid state reactions. For MII=Ni, Pd, the phases crystallize in the rhombohedral space group R (LiSbF6 type). Cationic ordering has been studied by X-ray diffraction and 119Sn Mössbauer resonance for PdSnF6. A lowering of symmetry
通过使用BrF 3作为氧化剂和溶剂,或通过固态反应,通过不同的制备方法合成了M II M IV F 6(M II = Ni,Pd,Cu;M IV = Pd,Pt)和PdSnF 6复合氟化物。当M II = Ni,Pd时,相在菱面体空间群R(LiSbF 6型)中结晶。通过X射线衍射和PdSnF 6的119 SnMössbauer共振研究了阳离子有序性。当所涉及的二价阳离子呈现Jahn–Teller构型(CuII)。除了低至4 K顺磁性的PdSnF 6以外,所有化合物均为低温下的Pd 2 F 6型铁磁体。这种行为已经涉及到半满的订货Ë摹二价阳离子的轨道和空Ë摹四价阳离子的轨道。在高压下已观察到电导率急剧增加。尤其是在Pd 2 F 6中在压力(最高80 kbar)下引起的绝缘体-半导体跃迁对应于电阻率降低了六个数量级。已经提出了在压力下从混合氧化态(M II + M IV)诱导成独特的三价M III氧化态的电子跃迁的假设。
The saturated vapour of platinum tetrafluoride was studied by Knudsen-cell mass spectrometry. The only gaseous species found was PtF4(g). The molar sublimation enthalpy: ΔsubHmo(PtF4, 298.15 K) = (207 ± 16) kJ · mol−1 was obtained.