Copper(II) as an Analytical Oxidant in Acetonitrile.

Abstract

which cause deviations from Beer's law.In this study, only one emission in the visible region was available. The use of lasers in light absorption studies is at present limited because of comparatively few emission lines. Recently, more transitions have been reported in the visible light region with a He-Ne gas laser (3). Other gas laser systems have been studied or suggested which demonstrate many transitions in the UV, ultraviolet, visible, infrared, and far infrared (2,4,5,7,8,10). These developments increase potential applications in the spectro-chemical field.Work is currently in progress in this laboratory in which more complex systems are being studied to determine how other causes of nonlinearity in calibration curves are effected by a laser light source.In addition, other dye systems have been selected whose absorption maxima are significantly different from the 632.8 µ transition of the He-Ne laser. From these studies, some estimate of the applicability of the laser-spectrophotometer combination can be made in respect to off-peak measurements of these kinds.

Oxidation of thiourea and substituted thioureas: a review

“…Copper(II) perchlorate in acetonitrile has been shown to be an effective oxidant for a variety of compounds, including thiourea (76,77). Zatko is oxidized to formamidine disulfide, and copper(II) is reduced to copper(I), which remains in solution as a complex with acetonitrile.…”

Synergistic effect of perchlorate ions and acetonitrile medium explored for extension in copper redoximetry

“…rahedral geometry [17] of [Cu(MeCN) 4 ] + , the soft soft interaction and good pi donor acceptor character istics. Acetonitrile solution of copper(II) is thus a stronger analytical oxidant than aqueous copper(II) [18] and is known to oxidize several compounds like iodide, hydroquinone and thiourea [18]. Recently copper(II) salts in acetonitrile media have been used in the oxidation of vic dioximes to corresponding furoxans [19,20] with mechanistic details [21].…”

Well-defined copper(i) complexes for Click azide–alkyne cycloaddition reactions: one Click beyond

“…In this case, how the active copper(I) species are formed remains uncertain. Even if acetonitrile is known to promote such reduction, 79 the reactions also proceeded in pure water. Nitrogen tetradentate ligand 40 was also used in this transformation in combination with CuI (Scheme 9).…”