An octameric fluoridopalladate(IV) [Pd8F36]4− anion in KPd2F9 revealed by 3D electron diffraction

2026/06/03 by Klemen Motaln, Kshitij Gurung, Mirela Dragomir +2 · 1 voice
Chemistry · Pharmacology, Toxicology and Pharmaceutics · #Inorganic Fluorides and Related Compounds #Inorganic Chemistry and Materials #Fluorine in Organic Chemistry

paper · doi:10.1016/j.solidstatesciences.2026.108401

openalex publication_date 2026/06/03 · openalex created_date 2026/06/04 · openalex updated_date 2026/07/23

Abstract

The chemistry of fluoridopalladates(IV) is mainly limited to salts containing the discrete [PdF 6 ] 2− anion. Reaction of K 2 PdF 6 with AsF 5 in anhydrous HF results in the removal of KF as KAsF 6 and the formation of KPd 2 F 9 . The product was characterized by Raman spectroscopy, powder X-ray diffraction and 3D electron diffraction (3D ED). Crystal structure elucidation revealed a rare example of an oligomeric fluoridopalladate(IV) anion, namely the cube-shaped octameric [Pd 8 F 36 ] 4− species. Raman spectroscopic investigations of analogous reactions involving Rb 2 PdF 6 and Cs 2 PdF 6 indicate that related fluoridopalladate(IV) species also likely formed.

Citations

• Mechanochemical Synthesis and Magnetic Properties of the Mixed-Valent Binary Silver(I,II) Fluorides, AgI2AgIIF4 and AgIAgIIF3
• GSAS-II: the genesis of a modern open-source all purpose crystallography software package
• SUPERFLIP– a computer program for the solution of crystal structures by charge flipping in arbitrary dimensions
• A simple cryotransfer method for 3D electron diffraction measurements of highly sensitive samples
• Crystal Structures of XeF2·2PtF4 and XeF2·2PdF4 Determined by 3D Electron Diffraction and Structural Models of XePtF6
• Coordination of XeF 2 to Fluoridometal Cations: The Adduct Cations [PtF 3 (XeF 2 ) 3 ] + and [PdF 3 (XeF 2 ) 3 ] +

Discussions

• We determined the crystal structure of the first oligomeric fluoridopalladate(IV), the cube-shaped [Pd₈F₃₆]⁴⁻ anion in KPd₂F₉, using #3DED / #MicroED. A joint #GACR – #ARIS project. Check out our Soli [bsky, 2 points, 0 comments]

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