Copper complexes diethylenetriamine

Platinum (diethylenetriamine)inosine and inosine 5 -phosphate copper complex. ... 

By Utilization of the waves of copper complexes, and the resolution of half-wave potentials with derivative curves, it was possible to distinguish between amino polycarboxylic acids in 20 two-component mixtures and in 4 three-component mixtures. The compounds investigated were iminodiacetic acid, methyl-iminodiacetic acid, nitrilotriacetic acid, uranul-N,N-diacetic acid, ethylenediaminetetraacetic acid, diethylenetriamine-... 

The same type of Au- -N interaction between adjacent [Au(CN)4] anions is found in [Cu(dien)][Au(CN)4]2 and [Cu(en)2][Au(CN)4]2 (dien = diethylenetriamine en = ethylenediamine) [48], although in these examples the copper cations act as bridges between neighboring chains generating 2-D sheets, as shown in Figure 5.26. The Au- -N separations, of 3.001 and 3.137 A in the triamine complex and 3.035(8) A in the diamine one are similar to those in other tetracyanoaurate(III) derivatives. Additional weak hydrogen bonds between amino hydrogen and N(cyano) atoms increase the dimensionality of the supramolecular structure. 

Table 1. Wave-numbers o (in the unit 1000 cm-1) and oscillator strengths P (in the unit 10—S) of spin-allowed (but Laporte-forbidden) transitions in nickel(II), copper(II) and palladium(II) complexes of water, ammonia, ethylenediamine (en), diethylenetriamine (den) and pyridine (py). Shoulders in parentheses...

Figure 11-7. Data table for multiple linear regression analysis of spectra of copper(II) complexes by UNEST. Ligand abbreviations GG, glycylglycinate Ga, glycinamide gly, glycinate en, ethylenediamine dien, diethylenetriamine 1,2-DAP, 1,2-diaminopropane tetmeen, tetramefnylethylenediamine. Data from E. J. Billo, Inorg. Nucl. Chem. Lett. 1974, 10, 613.

One important aspect that should be considered in future industrial processes to produce polyphenylene ethers is the use of greener solvents. In that context, some studies have been carried out to try to generate PPO in water [46]. Thus, Nishide and coworkers have developed a procedure where an aqueous solution of copper(II) complex (10mol%), that is, CUCI2/DTPA (DTPA = diethylenetriamine-A/ ,A/ ,A/ , A/ ",A/ "-pentaacetic acid), is mixed with an aqueous solution of DMP/NaOH 1/1, containing sodium w-dodecyl sulfate. 

However, by using an excess of oxidant, the formation of TMDQ can be suppressed, even in an alkaline aqueous solution [19]. Water-soluble copper catalysts, which are a complex of CuCh x 2H2O and diethylenetriamine-iV,MA, A, A -pentaacetic acid and other related complexes, have been developed. Surfactants increase the yield of polymer. 

Diaz, G., S. Diez, L. Lopez, R. Munoz, M.M. Campos-Vallette, V. Manriquez, and O. Wittke (1993). Spectra and structure of polyamine-copper(II) complexes. Infrared spectrum and normal coordinate calculations of mono(diethylenetriamine) copper(II) nitrate. Vib. Spectrosc. 6, 37, and references cited therein. 

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