The electrochemical behavior of metal carbonyls in a mixture of a room temperature molten salt and benzene

An electrochemical and spectroscopic study of some aromatic hydrocarbons in the room temperature molten salt system aluminum chloride-n-butylpyridinium chloride

“…Corresponding similarities were also found between the oxidation potentials of a number of metal carbonyls in the AlCh-ethylpyridinium bromide system and CH3CN. 13 An interesting phenomenon was observed when any of the hydrocarbons with an £p/2, in the melt, less than about 1.4 V was added to the most acidic melts: the hydrocarbon was spontaneously oxidized to the cation radical. Such behavior has also been observed when solid anthracene or tetracene is exposed to AICI3 vapor and heated slightly.34,35 The UVvisible spectrum of 9,10-diphenylanthracene in a 2:1 melt was recorded 30 min after mixing and was found to be identical with that of the radical cation in acetonitrile29 and was also found to be invariant over a period of 3 days.…”

The Electrochemical Behavior of Aluminum in the Low Temperature Molten Salt System n Butyl Pyridinium Chloride: Aluminum Chloride and Mixtures of This Molten Salt with Benzene

“…The first such system studied was the 2:1 A1C13: ethyl pyridinium bromide mixture, which was molten at room temperature, and it was demonstrated that this solvent, and its mixtures with benzene, could be successfully used for organic and organometallic electrochemistry (10)(11)(12), as well as for photochemical investigations (13). This work has shown that suitable solvents can be made from mixtures Of alkyl pyridinium halides and aluminum halides.…”

Hydroxycarbene complexes from paramagnetic acylmetals. Electrochemistry of benzoylchromium(0) and -tungsten(0) carbonyls

“…(OC)5CrC(=0)Ph" + HX (OC)5Cr=C(OH)Ph + X" (5) anodic waves, the relative peak currents of which vary with the amount of added acid, as shown in Table V for trifluoroacetic acid. The anodic wave at £p = 0.40 V corresponds to that of the benzoylchromium(O) anion, and that a 0.50 V represents the phenylhydroxycarbene complex, as described in eq 5 (X = 02CCF3).…”

“…-374 (5) 23 C( 6) 4027 ( 8) 4668 ( 8) 2817 (7) 17 0 (7) 4262 ( 6) 5238 ( 6) 3573 (5) 25 C( 8) 3726 ( 8) 5110 ( 8) 723 ( 7) 14 0( 9) 3765( 6) 5925 (5) 210 (5) 21 C( 10) 5565 ( 8) 3587 ( 8) 1990 (6) 16 0 (11) 6698 ( 6) 3484 ( 6) 2273 (5) 27 C( 12) 1725 ( 8) 3849 ( 8) 1206 ( 6) 15 0(13) 915 ( 6) 2954 ( 6) 770 (5) 18 C( 14) 928 ( 8) 4823 ( 8) 1427 (7) 15 C( 15) 1398 ( 8) 6030 ( 8) 1592 ( 7) 17 C( 16) 641 ( 8) 6930 ( 8)…”