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    Spectrochemistry of Solutions: Part 5.1—Raman Spectroscopic Study of the Coordination of Silver(i) Ions in Liquid Ammonia by Thiocyanate lons
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1978, 74 (02), 1978) Gans, Peter; Gill, J. Bernard; Griffin, Mervyn
    A detailed study of the Raman spectra of mixtures of AgNO3 and KSCN in liquid ammonia solution indicates the formation of a weak S-bonded 1: 1 complex between Ag ■ and SCN-. Formation constants (concentration quotients) arc 3.1±0.5 and 1.3 ±0.4 kg mob1 at 293 and 233 K respectively. The formation of AgSCN is entropy favoured (±5 ~ 37 J mol-1 K-1) but enthalpy hindered (A 7/ ~ 8.2 kJ mol-1); the equilibrium [Ag(NH3)4]++SCN- [Ag(NH3)3SCN] + NH3 is proposed on the basis of these results. The possible existence of species such as [Ag2SCN]+ and [Ag(SCN)2]~ is suggested by some minor spectral features.
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    Kinetics of Electrode Reactions in Liquid Ammonia: Part 2.—FeIII/FeII and CoIII/CoII redox couples
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1974, 70 (1-6), 1974) Brown, Oliver R.; Thornton, Sean A.
    Polarisation data has been obtained for the CoII/CoIII and FeII/FeIII couples at rotating disc electrodes of platinum, gold and vitreous carbon at – 30°C in ammonia acid solution. In addition, metal wires and carbon rod have been used to examine the low level behaviour of the cobalt system and to record charge measurements in the oxidation of the anode surfaces. The iron couple is reversible on carbon but is inhibited by anodic films on gold and platinum. Apparent standard rate constants for the CoII/CoIII reaction are affected only slightly by the electrode material, but the oxidation branch is noticeably inhibited by anodic film formation. The mechanism of inhibition by anodic films is discussed. FeIII is unstable in acid ammonia.