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Electrosynthesis of Unique Ag II Fluoride Quantum Antiferromagnets in Anhydrous HF
Author(s) -
Połczyński Piotr,
Jurczakowski Rafał,
Mazej Zoran,
Dobrzycki Łukasz,
Grzelak Adam,
Grochala Wojciech
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000363
Subject(s) - electrosynthesis , chemistry , anhydrous , hydrogen fluoride , fluoride , inorganic chemistry , hydrogen , boron , electrochemistry , electrode , organic chemistry
The first successful electrosynthesis of polycrystalline Ag II FBF 4 and single crystalline Ag II F 2 in both galvanostatic and potentiostatic conditions was achieved at the Boron‐Doped Diamond electrode in anhydrous hydrogen fluoride. Silver(I) oxidation and the F 2 evolution reactions are well separated in the potential scale. Temperature of performing electrosynthesis as well as BF 3 overpressure were found to be key variables of the process. Impedance spectroscopy measurements provided insight into the mechanism of formation of silver(II) fluorides pointing out to the presence of HF‐soluble Ag(BF 4 ) 2 intermediate. The phase purity of the products was determined by X‐ray diffraction.