Metal complex system

This paper reviews the recent studies in the field of radical reactions of organobromine compounds. A special attention is paid to the use of metal-complex systems based on iron pentacarbonyl as catalysts this makes it possible to perform the initiation and chain transfer reactions selectively at C-Br bond. 

Finally, concurrently with addition, reduction of tri- or dihalomethyl groups in the adduct can occur under conditions of initiating by metal-complex systems in the presence of hydrogen donor chain transfer at C-H bond, at C-Br one, is also possible to form compounds containing one bromine atom less than adducts. 

De Jong, H. G. and van Leeuwen, H. P. (1987). Voltammetry of metal-complex systems with different diffusion-coefficients of the species involved. 2. Behaviour of the limiting current and its dependence on association/dissociation kinetics and lability, J. Electroanal. Chem., 234, 17-29. 

Filella, M., van Leeuwen, H. P., Buffle, J. and Holub, K. (2000). Voltammetry of chemically heterogeneous metal complex systems. Part II. Simulation of the kinetic effects induced on polarographic waves, J. Electroanal. Chem., 485, 144-153. 

A detailed study of the effect of the medium and temperature on the intramolecular electron transfer rate constant kt in various metal complex systems of the bridge structure has been carried out [25]. The values of kt were found to increase and the activation energy to decrease with increasing polarity of the medium. These effects were accounted for in terms of the modern electron transfer theory (see the case Er > J in Fig. 5 of Chap. 3) by greater changes in the free energy, AG°, due to a higher redox potential of the L/Lr pairs in a more polar medium. 

The 5-hydrazinotetrazole 422 is known to be used in the preparation of energetic coordination metal complex systems, for example, the perchlorate complex of mercury(ll) with 5-hydrazinotetrazole 423 (cf. Section 6.07.12.2) (Equation 78) <2005MI21>. 

The reactions shown in Scheme 1 require activation of the aromatic C-H bond by a metal and subsequent insertion of an alkene or alkyne in the aryl-carbon palladium bond (Chapter III.1.3.2.5). C-H activation has been the topic of many studies since the 1960s and several metal complex systems are known to induce... 

It is well known that x-traw-butadiene can serve as a bridging ligand in binuclear [( i-r 2,r 2-C4H6)M2L ]metal complexes.12 However, since the original discovery in 19804 there has been an increasing number of structurally, chemically, and spectroscopically well characterized mononuclear (s-trura-conjugated diene)metal complex systems reported in the literature.11... 

Early work on the kinetics of photoinduced ET in transition metal complex systems focused exclusively on bimolecular reactions between transition metal chromophores and electron donors or acceptors. However, concomitant with the advances in rapid photochemical kinetic methods and chemical synthetic methodology, emphasis shifted to photoinduced ET in chromophore-quencher assemblies that comprise a metal complex chromophore covalently linked to an organic electron donor or acceptor [24]. These supramolecular compounds afford several... 

For many metal complex systems an alternative approach via the group overlap integrals is possible using the Angular Overlap Model (4,41,42). Thus the Wolfsberg-Helmholz treatment, with k = 2 (i.e. HML = Sml(Hm + Hl)), allows the anti-bonding energies, E, of the central metal orbitals to be written as (42)... 

Lakatos, B. and Meisel, J. (1978). Biopolymer-metal complex systems. V. PMR investigation of humic substances. Acta Agron. Acad. Sci. Hung. 27, 313-320. 

Redox-Based Functionalities of Multinuclear Metal Complex Systems... 

REDOX-BASED FUNCTIONALITIES OF MULTINUCLEAR METAL COMPLEX SYSTEMS... 

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