Magnetochemische Untersuchungen. 4. Notiz über den Magnetismus der Ag(II)‐Verbindungen

Higher Oxidation States of Silver.

“…From magnetic susceptibility measurements, the pyridine mono-, di-, and tricarboxylates have an effective number of magnetons per silver atom of 1.7-1.8 which indicates strong orbital quenching and, therefore, spin-only paramagnetism (6,7,8,37,101,175). Former paramagnetic resonance measurements of Agpy4S208 ( 64) and of Ago-phn2S208 (29) have been improved and extended to several other compounds (123).…”

The Silver Oxide Electrode

“…In any event, the conductivity is considerably better than that of Ag,~O and this indicates that there are unpaired or mobile electrons present in the solid material. The magnetic susceptibility per mole has been given as +40 • 10 -6 (paramagnetic) (30) and--19 • 10 _6 (diamagnetic) (29). The latter value was used as evidence for the conclusion that the bonding in the AgO lattice is covalent or metallic and the silver is trivalent.…”

The oxidation states of silver

“…It formed orange-red prisms which he found to be isomorphous with those of the corresponding cupric salt. These salts, and several others of similar nature, have been shown to be paramagnetic, as would be expected of divalent coordinated silver ions (24,25,28). Dipyridyl coordinates more firmly than pyridine itself, and complex dipyridyl argentic ions have been studied extensively (24,26,27,28).…”