Reactions of KBrF4 with platinum metals

Sergei I. Ivlev; Artem V. Malin; Antti J. Karttunen; Roman V. Ostvald; Florian Kraus

doi:10.1016/j.jfluchem.2018.11.010

Reactions of KBrF₄ with platinum metals

Sergei I. Ivlev, Artem V. Malin, Antti J. Karttunen, Roman V. Ostvald, Florian Kraus^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

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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.

Original language	English
Pages (from-to)	11-20
Number of pages	10
Journal	Journal of Fluorine Chemistry
Volume	218
DOIs	https://doi.org/10.1016/j.jfluchem.2018.11.010
Publication status	Published - 1 Feb 2019
MoE publication type	A1 Journal article-refereed

Keywords

Platinum metals
Potassium tetrafluoridobromate
Recycling
X-ray diffraction
FREQUENCIES
COMPLEX FLUORIDES
CRYSTAL-STRUCTURES

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10.1016/j.jfluchem.2018.11.010

CHEM_ Ivlev_et_al_Reactions_of_KBrF4_2018_Journal_of_Fluorine_ChemistrySubmitted manuscript, 1.45 MBLicence: Unspecified

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@article{e8b890a8603a42c0ac257a3e71fdbba8,

title = "Reactions of KBrF4 with platinum metals",

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.",

keywords = "Platinum metals, Potassium tetrafluoridobromate, Recycling, X-ray diffraction, FREQUENCIES, COMPLEX FLUORIDES, CRYSTAL-STRUCTURES",

author = "Ivlev, {Sergei I.} and Malin, {Artem V.} and Karttunen, {Antti J.} and Ostvald, {Roman V.} and Florian Kraus",

year = "2019",

month = feb,

day = "1",

doi = "10.1016/j.jfluchem.2018.11.010",

language = "English",

volume = "218",

pages = "11--20",

journal = "Journal of Fluorine Chemistry",

issn = "0022-1139",

publisher = "Elsevier Science",

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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

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DO - 10.1016/j.jfluchem.2018.11.010

M3 - Article

AN - SCOPUS:85057116831

VL - 218

SP - 11

EP - 20

JO - Journal of Fluorine Chemistry

JF - Journal of Fluorine Chemistry

SN - 0022-1139

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