Voltammetry and electrocatalytic properties of cobalt (1,4,8,12-tetraazacyclopentadecane) in aqueous solution

✍ Scribed by Hulin Li; Boyan Zhang; Lin Ma; Liliu Wu; James Q. Chambers

• Book ID: 104636338
• Publisher: Springer
• Year: 1995
• Tongue: English
• Weight: 479 KB
• Volume: 20
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00136418

✦ Synopsis

The spectrochemical, electrochemical and electrocatalytic properties of Co[15]aneN 4 ([15]aneN 4 = 1,4,8,12-tetraazacyclopentadecane) have been investigated. The results show that, in aqueous solution, this compound mainly exists as three species whose axial coordination positions are occupied by water and/or hydroxy ligands; it is marginal whether other substrates such as C1-and NO 3 interact with the central ion in acid-base solutions.

The approximate Pourbaix diagram of ColII/II[ 15]ane N 4

was determined. There is an electrochemically-induced isomerization between two trans conformational isomers of the Co[15]aneN 4 complexes in acid and netural solutions. The Co[15]aneN 4 complex has electrocatalytic properties for reduction of nitrate and nitrite only in strong alkaline solution.