TY - JOUR
T1 - Reactions of KBrF4 with platinum metals
AU - Ivlev, Sergei I.
AU - Malin, Artem V.
AU - Karttunen, Antti J.
AU - Ostvald, Roman V.
AU - Kraus, Florian
PY - 2019/2/1
Y1 - 2019/2/1
N2 - 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.
AB - 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.
KW - Platinum metals
KW - Potassium tetrafluoridobromate
KW - Recycling
KW - X-ray diffraction
KW - FREQUENCIES
KW - COMPLEX FLUORIDES
KW - CRYSTAL-STRUCTURES
UR - http://www.scopus.com/inward/record.url?scp=85057116831&partnerID=8YFLogxK
U2 - 10.1016/j.jfluchem.2018.11.010
DO - 10.1016/j.jfluchem.2018.11.010
M3 - Article
AN - SCOPUS:85057116831
SN - 0022-1139
VL - 218
SP - 11
EP - 20
JO - Journal of Fluorine Chemistry
JF - Journal of Fluorine Chemistry
ER -