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Does PrF₅ exist? – A combined matrix isolation and quantum-chemical study

Thomas Vent-Schmidt, Sebastian Riedel – 2015

The chemistry of the lanthanides is mostly dominated by compounds in the oxidation state +III. Only few compounds of Ce, Pr, and Tb are known with the metal in the +IV oxidation state. Removal of the last f-electron on praseodymium +IV would lead to a closed-shell system with formal oxidation state V. In this work we investigated the stability of the PrF₅ molecule by theory and matrix-isolation techniques through the reaction of laser-ablated praseodymium atoms with fluorine in excess of neon, argon, krypton, or neat fluorine. Besides the known PrF₃ molecule, unreported IR bands for PrF₄ could be observed, and there is evidence for the formation of PrF and PrF₂ but not for the formation of PrF₅.

Titel
Does PrF₅ exist? – A combined matrix isolation and quantum-chemical study
Verfasser
Thomas Vent-Schmidt, Sebastian Riedel
Schlagwörter
Praseodym, Matrix-Isolation Spectroscopy, Coupled-Cluster Calculations
Datum
2015
Quelle/n
Erschienen in
Inorg. Chem. 2015, 54, 11114-11120.
Zitierweise
DOI: 10.1021/acs.inorgchem.5b01175
Sprache
eng