The Preparation of Some Organic Mercurials from Diazonium Borofluorides

The pH-dependence of oxygen reduction on quinone-modified glassy carbon electrodes

“…The diazonium tetrafluoroborates of 9,10-anthraquinone (I) and 9,10-phenanthrenequinone (II) were synthesized according to a published procedure [14,40].…”

Oxygen electroreduction on chemically modified glassy carbon electrodes in alkaline solution

“…The diazonium salts used to derivatise glassy carbon are shown in Scheme 3. The following aryldiazonium salts (C 6 H 5 N 2 BF 4 , C 10 H 7 N 2 BF 4 and C 14 -H 9 N 2 BF 4 ) were synthesized according to a published procedures [41]: an ice-cooled solution of 50 mmol of NaNO 2 in 7.5 ml water was added slowly (drop wise $0.5 h) to a mixture of 45 mmol of aryl amine in 30 ml of 48% HBF 4 cooled to 0°C. The temperature was kept at 0-2°C while stirring the solution for an additional 0.5 h. The compound was filtered, washed once with ice cool HBF 4 , once with ice cool water, twice with ice cool ethanol and finally three times with diethyl ether.…”

A study of glassy carbon electrodes modified with azobenzene derivatives

“…Pre-synthesised azobenzene diazonium tetrafluoroborate and commercially available Fast Garnet GBC sulphate salt (2-methyl-4-([2-methylphenyl]azo)benzenediazonium salt, Sigma-Aldrich) and Fast Black K salt (2,5-dimethoxy-4-([4-nitrophenyl]azo)benzenediazonium chloride hemi (zinc chloride), Sigma) were used. Azobenzene diazonium tetrafluoroborate was synthesised from 4-aminoazobenzene hydrochloride (97%, TCI) according to previously established procedures [35][36][37]. Briefly, the corresponding aniline (0.01 mol) was dissolved in 100 mL of the mixture of water and acetone (1:1 by volume).…”