Generation and characterisation of the phenoxyl-radical containing Cu(II) complex [Cu(triaz)(2)](+) (triaz(-) = O,N chelating triazole-phenolate)

作者：Butsch Katharina; Klein Axel^*; Nitsche Sara; Stirnat Kathrin; Hawkett Jonathon R; McInnes Eric J L; Bauer Matthias

来源：Dalton Transactions, 2012, 41(37): 11464-11475.

DOI：10.1039/c2dt31369c

The new copper complex [Cu(triaz)(2)] (Htriaz = 2,4-di-(tert-butyl)-6-(5-chloro-2H-benzo[d][1,2,3]triazol-2-yl)phenol) was investigated in detail by single crystal XRD, EPR-, UV/Vis-absorption-, CV-, and spectroelectrochemistry. The oxidised species [Cu(triaz)(2)](+) was characterised by UV/Vis spectroelectrochemistry and contains a phenoxyl-radical bound to Cu(II). This quite stable species was chemically generated by two different methods: aerial oxidation of a Cu(I) precursor in the presence of Htriaz (and base) or from [Cu(triaz)(2)] by adding a Cu(II) salt (disproportionation). The efficiency for the latter reaction has been studied by UV/Vis spectroscopy, XAS and catalytic test reactions (oxidation of benzyl alcohol).

• 出版日期2012