KHfF5: MIMIVF5家族的新代表。

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Acta Crystallographica Section C Structural Chemistry Pub Date : 2025-04-01 Epub Date: 2025-03-14 DOI:10.1107/S2053229625002177

Oksana P Grigorieva, Viktor A Tafeenko, Peter S Berdonosov, Valery A Dolgikh

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引用次数: 0

摘要

报道了水热法制备的五氟化铪钾KHfF5的制备及其晶体结构。化合物在正交非中心对称空间群P212121中结晶，晶胞参数为a = 6.2843 (3), b = 7.8063 (3), c = 15.8286 (7) Å。Hf原子与8个F原子配位，形成方形反棱镜多面体。成对结合，HfF8反棱镜通过共同的f原子边缘相互连接，形成双链的铪多面体。KHfF5与其他碱金属和铪、锆或铽（IV）的配合氟化物的结构比较表明，该化合物在一般组成物MIMIVF5的已知相中没有类似物。

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KHfF₅: a new representative in the M^IM^IVF₅ family.

We report the preparation and crystal structure of potassium hafnium pentafluoride, KHfF₅, obtained by the hydrothermal technique. The compound crystallizes in the orthorhombic noncentrosymmetric space group P2₁2₁2₁, with the unit-cell parameters a = 6.2843 (3), b = 7.8063 (3) and c = 15.8286 (7) Å. Hf atoms are coordinated by eight F atoms, forming square antiprismatic polyhedra. Bonding in pairs, HfF₈ antiprisms are interconnected via common F-atom edges and form a double chain of hafnium polyhedra. A comparison of the structure of KHfF₅ with other complex fluorides of alkali metals and hafnium, zirconium or terbium(IV) revealed that this compound has no isostructural analogue among the known phases of general composition M^IM^IVF_5.

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来源期刊

Acta Crystallographica Section C Structural Chemistry CHEMISTRY, MULTIDISCIPLINARYCRYSTALLOGRAPH-CRYSTALLOGRAPHY

CiteScore

1.60

自引率

12.50%

发文量

148

期刊介绍： Acta Crystallographica Section C: Structural Chemistry is continuing its transition to a journal that publishes exciting science with structural content, in particular, important results relating to the chemical sciences. Section C is the journal of choice for the rapid publication of articles that highlight interesting research facilitated by the determination, calculation or analysis of structures of any type, other than macromolecular structures. Articles that emphasize the science and the outcomes that were enabled by the study are particularly welcomed. Authors are encouraged to include mainstream science in their papers, thereby producing manuscripts that are substantial scientific well-rounded contributions that appeal to a broad community of readers and increase the profile of the authors.