Electrochemical properties of the solvent SbCl/sub 3/-AlCl/sub 3/-N-(1-butyl)pyridinium chloride and electrochemical and spectroelectrochemical studies of the solute 9,10-dimethylanthracene. [Oxidation of 9,10-dimethylanthracene to radical cation]

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5693194

Chapman, D M; Smith, G P; Sorlie, M; Petrovic, C; Mamantov, G

Specific conductivities of the compositions (mole %) 60:19:21 (basic) and 60:21:19 (acidic) SbCl/sub 3/-AlCl/sub 3/-BPCl, measured over the temperature range 24 to 100/sup 0/C, varied from 0.00395 to 0.02759 S cm/sup -1/. Viscosities of the 60:21:19 and 60:19:21 melts were 22.8 +- 0.7 and 31.5 +- 0.9 cp, respectively, at 25.1 +- 0.5/sup 0/C. For a potentiometric titration between the compositions 60:18:22 and 60:22:18 with SbCl/sub 3/ fixed at 60 mol %, the potential of the Sb(III)/Sb(0) couple increased by 0.43 V at 27/sup 0/C. Current-overvoltage curves for the oxidation of antimony metal in a 60:21:19 melt at an Sb rod electrode displayed Tafel behavior. The feasibility of performing electrochemical studies in these media was demonstrated using cyclic voltammetry, differential pulse polarography and double potential-step chronocoulometry to elucidate the electrochemical behavior of 9,10-dimethylanthracene (DMA) in the 60:19:21 melt. The solute was reversibly oxidized to its radical cation at an anodic peak potential of + 0.50 V relative to the reference electrode (SbCl/sub 3/-BPCl(l), sat. SbCl/sub 3//Sb at 27/sup 0/C. Spectroelectrochemical experiments on DMA using an optical multichannel spectrometer over the range 479 to 984 nm are reported. The spectrum of the DMA radical cation has four bands with the most intense at 678 nm.

• Research Organization: Oak Ridge National Lab., TN (USA); Tennessee Univ., Knoxville (USA); Tennessee Univ., Knoxville (USA). Dept. of Chemistry
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5693194
• Report Number(s): CONF-8305100-6; ON: DE83015764
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
ANTIMONY CHLORIDES
ANTIMONY COMPOUNDS
AROMATICS
AZINES
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMISTRY
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
IONS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PHYSICAL PROPERTIES
PYRIDINES
PYRIDINIUM COMPOUNDS
QUATERNARY COMPOUNDS
RADICALS
SPECTRA
VISCOSITY