Photochemistry of copper complexes

Sykora J. Photochemistry of copper complexes and their environmental aspects. Coord Chem Rev 1997 159 95-108. 

Moffett, J. W., and R. G. Zika (1987), Photochemistry of Copper Complexes in Seawater, in R. G. Zika and W. J. Cooper, Eds., Photochemistry of Environmental Aquatic Systems, American Chemical Society, Washington DC, pp. 116-130. 

Reviews have appeared of the photochemistry of copper complexes, the luminescence properties of copper(i) compounds, and of the mutual influence of ligands in co-ordination complexes. 

In this work, the photochemistry of copper complexes In seawater has been investigated with the following goals In mind ... 

A monoclinic form of the Cu iodide pyridine complex has been prepared but unlike the cubane tetrameric modification, this isomer does not show luminescence thermochromism. The photochemistry of copper(n) chloride has been examined at 313 nm and 77 K in ethanol and HCl solution and has shown transient radical complex formation between Cu and CH3CHOH. Photolysis of DMF solutions of [CuClJ " is reported to lead to formation of the radical,CH2(CH3)NCHO, (10) and the Cu -(10) complex. At higher concentrations of [CuClJ ", photooxidation of (10) by excited [CuClJ predominates. The photochemistry of the... 

The metal-to-ligand charge transfer photochemistry of copper(I) diimine complexes has been studied for 20 years. McMillin and co-workers first repotted the photoredox chemistry of [Cu(dmp)2]BF4 in 1977 [92]. The same research group has also reported the photoluminescence properties of different copper(I) diimine complexes. One of the characteristics of this class of complexes is that Lewis... 

Cu11 complexes undergo photoreduction to the Cu1 species and may be the photocatalyst in photo-oxidation cycles of organic environmental matter, quite similar to the Fem species [20, 81] (see Figure 9.11). Dissolved copper compounds are important to transformation reactions, because they react with hydroperoxyl (H02) and superoxide (02 ) radicals much faster than other species present in the solution. Oxidation of Cu1 and Fe11 by H202 is a source of the OH radicals in oceans comparable with nitrite photolysis, whereas photochemistry of Cu11 chlorocom-plexes provides Cl radicals [81] ... 

Coordination Chemistry History Coordination Numbers Geometries Copper Inorganic Coordination Chemistry Gold Organometallic Chemistry Halides Solid-state Chemistry Photochemistry of Transition Metal Complexes. 

Mitani et al7 have studied the photoaddition of alkyl halides to alkenes using copper(i) complexes as catalysts. A typical example is shown in Scheme 1. The solvent-dependent photochemistry of the alkene (2) has been studied. ... 

Photochemistry of the Copper(I)-complexed Zinc/Gold Bisporphyrin-Stoppered [2]Rotaxane... 

Maslak P, Sczepanski JJ, Parvez M. Complexation through nitrogen in copper and nickel complexes of substituted meas.J Am Chem Soc. 1991 213 1062-1063. Sczepanski JJ. Divalent metal ion promoted urea solvolysis model studies for Jack Bean Urease and Photochemistry of phosphoryl Azides potential Photoafinity Labels [Ph.D. dissertation]. Pennsylvania The Pennsylvania State University, State College 1994. 

Ortmans I, Moucheron C, Kirsch-De Mesmaeker A (1998) Ru(ll) polypyridine complexes with a high oxidation power. Comparison between their photoelectrochemisty with transparent SnC>2 and their photochemistry with desoxyribonucleic acids. Coord Chem Rev 168 233-271 Ozawa T, Ueda J, Flanaki A (1993) Copper(ll)-albumin complex can activate hydrogen peroxide in the presence of biological reductants first ESR evidence for the formation of hydroxyl radical. Biochem Mol Biol Int 29 247-253... 

The copper(I) alkynyls displayed rich photochemistry and particularly strong photoreducing properties. The transient absorption difference spectrum of [Cu3(dppm)3(/X3-) -C=CPh)2]+ and the electron acceptor 4-(methoxycarbonyl)-A-methylpyridinium ion showed an intense characteristic pyridinyl radical absorption band at ca. 400 nm. An additional broad near-infrared absorption band was also observed and it was assigned as an intervalence-transfer transition of the mixed-valence transient species [Cu Cu Cu (dppm)3(/x3- -C=CPh)2] +. The interesting photophysical and photochemical properties of other copper(I) alkynyl complexes such as [Cu(BTA)(hfac)], 2 [Cui6(hfac)8(C=C Bu)8], and [Cn2o(hfac)8(CsCCH2Ph)i2] have also been studied. 

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