Copper polyamine complexes

Copper(II) polyamine complexes are substitutionally labile, in a manner similar to the corresponding nickel(II) complexes. This means that individual donor atoms may at times decoordinate and thus be available for derivatization reactions, e.g., with suitable carbonyl compounds. More complex ligands may thus be constructed, including macrocycles (35), polymacrocycles (36 38), and concave chelators (35). The copper(II) complex of 1 was synthesized as a starting material for reactions aiming at the derivatization of the pentaamine ligand (24-28). 

Vogtle et al. have employed the reaction of 2,6-hzs(chloroformyl)pyridine with various polyamines in order to synthesize a number of coronands, such as 137-139. Copper(II) complexes of 137 and 138 have been reported 117). 

The kinetics of the thermal decomposition of Cupy4(NCS)2 have been studied (425), as have the thermodynamics of the reaction of NCS with various polyamine complexes of copper(III) leading to the formation of bonds (70). 

Progress in the thermodynamics of copper(ii) polyamine complexes (R. Barbucci,... 

Synthesis of oximes and amines. Copper salts solubilized in aqueous alkyl polyamines solvents have been found to promote the homogeneous reduction of nitroalkanes to oximes by CO at atmospheric pressure and 85 C in good yields and conversion(9. Catalysis is favoured by the use of copper salts of weak acids solubilized in alkylpolyamlnes solvents of pKa > 9.2. The suggested reaction path involves the formation of a solvated cuprous carbonyl complex, which by combination with the nitroalkane anion gives a copper-nitroalkane complex ... 

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. 

Prodi L, Montalti M, Zaccheroni N et al (2001) Dansylated polyamines as fluorescent sensors for metal ions photophysical properties and stability of copper(II) complexes in solution. Helv Chim Acta 84 690-706... 

Bodenheimer, W., L. Heller, B. Kirson, and S. Yariv, 1965. Organo-metallic clay complexes. Part III— Copper-polyamine-clay-complexes. In International Clay Conference 1963. I. Th. Rosenqvist and P. Graff-Petersen, eds. Vol 2. London Pergamon Press, p. 351. 

One of the earliest references to a reaction in solution, which, as we now realize, depends upon the formation of a coordination compound, was recorded by Pliny who stated that the adulteration of copper sulfate by iron sulfate could be detected by testing with a strip of papyrus soaked in gall-nuts, when a black colour developed if iron were present. A. Libavius (1540-1616) noted how ammmonia present in water could be detected by the blue colour formed with a copper salt and A. Jacquelain (1846) actually determined copper salts in terms of the blue colour formed on adding ammonia. Later developments used coordination compounds formed from ethylenediamine and other polyamines.3 T. J. Herapath determined iron(III) as its red isothiocyanate complex in 1852 and the basic procedure is used today.3... 

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