“…This is not the case since our STM measurements below show a bare Au(1 1 1) surface after jumping the potential into this region. Previous studies demonstrated that Bi(I) or homopolyatomic Bi ions can exist in AlCl 3 -based molten salts [23][24][25]. Therefore, we tentatively assign this process to an oxidation reaction from Bi(I) or homopolyatomic Bi ions formed during the anodic dissolution to Bi(III).…”
“…This is not the case since our STM measurements below show a bare Au(1 1 1) surface after jumping the potential into this region. Previous studies demonstrated that Bi(I) or homopolyatomic Bi ions can exist in AlCl 3 -based molten salts [23][24][25]. Therefore, we tentatively assign this process to an oxidation reaction from Bi(I) or homopolyatomic Bi ions formed during the anodic dissolution to Bi(III).…”
“…Topol (27) was able to polarographically detect a reduced bismuth ion during an e.m.f. study of the Bi-BiClg system that had similar negative deviations.…”
Section: Initial Impuritiesmentioning
confidence: 99%
“…determinations to examine the species involved in molten systems (16,21,23,27). In general, this involves plot For constant temperature the slope of such a graph is equal to -RT/nF, and since R, T, and F are known, n may be deter mined.…”
mentioning
confidence: 99%
“…Some aspects of the approach outlined above have been successfully used for studies of lower oxidation states in molten halides by Topol and co-workers (16,27). Their measurements were made in three-compartment cells which contained asbestos fibers or ultrafine frits for junctions.…”
“…The initial decrease in solubility followed by its Increase as the temperature was increased to the consolute temperature was interpreted as the resultant of two processes, one predominant at lower temperatures and the other predomi nant at higher temperatures; for example, the solution of bismuth as a polymeric subhallde at lower temperatures followed by decomposition at higher temperatures. Polarographlc mea surements (10) on very dilute solutions gave results consistent with a Bl"^ solute species, while EMP concentration cells (11) showed Bi"^ to be present below 0.6 mole % metal with poly merization to a species such as BlJ^ at higher metal concentrations, A spectrophotometrlc study (12) established the presence of two chromophores in the range 0.01 to 6 mole % metal. An unambiguous identification of the solute species was not possible, but the simplest equilibrium consistent with the data (13), 4B1* ^ BiR*, was In agreement with the EMP measurements.…”
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