The chemistry of copper and silver in their higher oxidation states

3 – Crystal Chemistry of Fluorides

Rutile-type compounds. IV. SiO2, GeO2 and a comparison with other rutile-type structures Locality: Meteor Crater, Arizona, USA

The structures and stabilities of technetium fluorides in high oxidation states have been studied quantum-chemically at density functional theory (B3LYP) and coupled-cluster (CCSD(T)) levels. The c...

High-valent technetium fluorides. Does TcF7 exist?

IR and Raman spectra of X+ AuF6− (X=CIF2, CIO2, CIOF2, CIF4, CIF6) were studied. The vibration frequencies of these compounds in the solid phase and in solutions in anhydrous HF were assigned. Peculiar features of the vibrational spectra of solid X+ AuF6−, associated both with structural transformations of cations and anions in the crystal lattice field and cation—anion interactions and also with the Jahn—Teller effect, Fermi resonance, non-rigid intramoleciular rearrangements.,etc., were discussed.

Vibrational spectroscopy of complex compounds of gold pentafluoride

Publisher Summary This chapter discusses the solid-state structures of the binary fluorides of the transition metals. There has been a great deal of interest in binary transition metal fluorides, over many years, both from the synthetic and structural points of view. Synthetically, this group of compounds has provided a challenge, ranging as it does from compounds that can be prepared from aqueous solution to those requiring either very sophisticated or very extreme techniques. Thus manganese difluoride can be separated from aqueous hydrofluoric acid solution, whereas the recently characterized gold pentafluoride was synthesized through the intermediate formation of dioxygenyl hexafluoroaurate, which was decomposed thermally under controlled conditions. Chromium hexafluoride and osmium heptafluoride are forrned only under conditions of high temperature and high excess pressure of fluorine, and can be isolated only by rapid quenching to liquid nitrogen temperatures.

A.J. Edwards

Papers

Solid-State Structures of The Binary Fluorides of The Transition Metals