Reactions of KBrF4 with platinum metals

Reactions of KBrF4 with platinum metals
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KBrF4 与铂金属的反应

DOI:
10.1016/j.jfluchem.2018.11.010
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发表时间:
2019
影响因子:
1.9
通讯作者:
F. Kraus
F. Kraus
中科院分区:
化学4区
文献类型:
--
作者:
S. I. Ivlev;A. V. Malin;A. J. Karttunen;R. V. Ostvald;F. Kraus

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将各种铂金属(M= Ru, Os, Rh, Ir, Pd, Pt)与kbrf4加热至400℃时,研究了它们的反应。在所有情况下,分别观察到氧化态为+4或+5、k2mf6或KMF6的氟化钾金属铂酸盐的形成。对所得产物在水中的稳定性进行了测试。根据铂金属的不同,它们要么是稳定的,要么被还原到氧化态+4,要么被水解成迄今为止尚未识别的相。利用单晶或粉末x射线衍射、拉曼光谱和红外光谱对K2RuF6、K2OsF6、α-K2PdF6、β-K2PdF6进行了结构分析。前三种化合物在三角晶系中呈等型结晶,后者在六方晶系中呈等型结晶。发现k2pdf6的α→β相变是重构的。使用量子化学计算来研究晶体结构。
The reaction of various platinum metals (M= Ru, Os, Rh, Ir, Pd, Pt) with KBrF4was investigated upon heating their mixtures to 400 °C. The formation of potassium fluorido platinum metallates in oxidation states +4 or +5, K2MF6or 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 K2PdF6was found to be reconstructive. Quantum chemical calculations were used to investigate the crystal structures.
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