Reactions of KBrF4 with platinum metals

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)11-20
Number of pages10
JournalJournal of Fluorine Chemistry
Volume218
Publication statusPublished - 1 Feb 2019
MoE publication typeA1 Journal article-refereed

Researchers

Research units

  • University of Marburg
  • Tomsk Polytechnic University

Abstract

The reaction of various platinum metals (M = Ru, Os, Rh, Ir, Pd, Pt) with KBrF4 was investigated upon heating their mixtures to 400 °C. The formation of potassium fluorido platinum metallates in oxidation states +4 or +5, K2MF6 or KMF6, respectively, was observed in all cases. The obtained products were tested for their stability in water. Depending on the platinum metal, they were either stable, were reduced to the oxidation state +4, or were hydrolyzed to so far unidentified phases. K2RuF6, K2OsF6, α-K2PdF6, β-K2PdF6, which were previously only poorly characterized, were structurally reinvestigated by single crystal or powder X-ray diffraction, Raman and IR spectroscopy. The three former compounds crystallize isotypic in the trigonal, the latter in the hexagonal crystal system. The α→β phase transition of K2PdF6 was found to be reconstructive. Quantum chemical calculations were used to investigate the crystal structures.

    Research areas

  • Platinum metals, Potassium tetrafluoridobromate, Recycling, X-ray diffraction

ID: 30292567