The coordination chemistry of KrF₂ has been limited in contrast with that of XeF₂, which exhibits a far richer coordination chemistry with main‐group and transition‐metal cations. In the present work, reactions of [XeF₅][AsF₆] with KrF₂ in anhydrous HF solvent afforded [F₅Xe(FKrF)AsF₆] and [F₅Xe(FKrF)₂AsF₆], the first mixed krypton/xenon compounds. X‐ray crystal structures and Raman spectra show the KrF₂ ligands and [AsF₆]⁻ anions are F‐coordinated to the xenon atoms of the [XeF₅]⁺ cations. Quantum‐chemical calculations are consistent with essentially noncovalent ligand−xenon bonds that may be described in terms of σ‐hole bonding. These complexes significantly extend the XeF₂–KrF₂ analogy and the limited chemistry of krypton by introducing a new class of coordination compound in which KrF₂ functions as a ligand that coordinates to xenon(VI). The HF solvates, [F₅Xe(FH)AsF₆] and [F₅Xe(FH)SbF₆], are also characterized in this study and they provide rare examples of HF coordinated to xenon(VI).

中文翻译：

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K（II）和氙（VI）的混合稀有气体化合物；[F5Xe（FKrF）AsF6]和[F5Xe（FKrF）2AsF6]

与XeF ₂相比，KrF ₂的配位化学受到了限制，而XeF _2的配位化学与主族和过渡金属阳离子的配合化学要丰富得多。在目前的工作中，[XeF ₅ ] [AsF ₆ ]与KrF ₂在无水HF溶剂中的反应得到[F ₅ Xe（FKrF）AsF ₆ ]和[F ₅ Xe（FKrF）₂ AsF ₆ ]，第一种混合k /氙化合物。X射线晶体结构和拉曼光谱显示KrF ₂配体和[AsF ₆ ] ^-阴离子与[XeF ₅ ]的氙原子F配位] ⁺阳离子。量子化学计算与基本上非共价的配体-氙键相一致，可以用σ-孔键表示。这些配合物通过引入一类新的配位化合物来显着扩展了XeF ₂ -KrF ₂类比和and的有限化学，其中KrF ₂充当配位至氙（VI）的配体。HF溶剂化物[F ₅ Xe（FH）AsF ₆ ]和[F ₅ Xe（FH）SbF ₆ ]在本研究中也得到了表征，它们提供了与氙（VI）配位的HF的罕见实例。