Coordinated reactions

Adsorption of Metal Ions and Ligands. The sohd—solution interface is of greatest importance in regulating the concentration of aquatic solutes and pollutants. Suspended inorganic and organic particles and biomass, sediments, soils, and minerals, eg, in aquifers and infiltration systems, act as adsorbents. The reactions occurring at interfaces can be described with the help of surface-chemical theories (surface complex formation) (25). The adsorption of polar substances, eg, metal cations, M, anions. A, and weak acids, HA, on hydrous oxide, clay, or organically coated surfaces may be described in terms of surface-coordination reactions ... 

The detailed mechanism of forming O2 from water involves a number of elementary reaction steps, so that photoinduced interfacial coordination reactions are needed that may induce water species to form metal complexes, which are gradually oxidized and may, thereby, liberate oxygen. This may be done by introducing... 

A first terminal imido complex of nickel (121) was prepared according to Equation (3).468 The synthesis goes via the Ni11 amido compound (122) and uses the steric bulk of the arylimido group for stabilization. The Ni11 center in (121) is planar and three-coordinate. Reaction of (121) with CO or benzyl isocyanide leads to formal nitrene transfer with formation of (124) and (125), respectively. Further reaction with CO liberates the isocyanate and carbodiimide (Equation (4)). 69... 

The authors synthesized three amino acid substituted calix[4]arenes and investigated their coordination reactions towards Pd11 using electrospray mass spectrometry.384... 

During the course of related work, we identified the extent to which such metal clusters can take up CO through coordination reactions. The work not only shed light on the details of the coordination reactions, but also provided insight into the electronic and reactive characteristics of the metal clusters themselves. The useful-... 

The third effective approach is the preparation of ionic Pcs with large balanced ions [69-77], It is well known that ionic compounds are usually more soluble than neutral compounds in most organic solvents, especially in polar and mixing solvents. Ionic Pcs include cationic and anionic Pcs. The preparation of ionic Pcs is usually by means of electrochemistry. Sometimes they can be synthesized through oxidation reactions, ion exchange reactions or ion coordination reactions. 

Figure 4.33 displays optimized structures of the amminated coordination complexes Fh WCNFE), n = 1 — 3. Table 4.23 summarizes the metal atomic charges (Qw) and energies (AE ) of successive coordination reactions in (4.73),... 

Starting from the transition state it was expected the reaction would evolve either forward to the products or backward to the reactants. During the unconstrained CPMD simulations, however, the system was always found to evolve towards the reactants. Because of this it was necessary to apply constrained dynamics to the principal coordinate reaction (the distance between WAT oxygen and GTP y-phosphorus) this enabled investigation of the system evolution towards the products (Fig. 2.7). 

Hudson, R. J. M. and Morel, F. M. M. (1990). Iron transport in marine-phytoplankton - kinetics of cellular and medium coordination reactions, Limnol. Oceanogr., 35, 1002-1020. 

Cobalt octacarbonyl reacts with polydiynes obtained by Co y-irradiation to give metallated products in which 50% of the available alkyne moieties are coordinated. Reactions with M(CO)2Cp 2 (M = Mo, W) also gave partly characterized polymeric metallated products, together with significant amounts of M(CO)3Cp 2. °... 

LIGAND DIFFUSION TO RECEPTOR METAL ION COORDINATION REACTIONS... 

TRANSIENT-STATE KINETIC METHODS CHEMICAL KINETICS TRANSITION COORDINATE REACTION COORDINATE PHYSICAL ORGANIC CHEMISTRY NOMENCLATURE... 

Chapters 5 through 7 deal with polymers formed from chain-growth polymerization. Chain-growth polymerization is also called addition polymerization and is based on free radical, cationic, anionic, and coordination reactions where a single initiating species causes the growth of a polymer chain. 

Universal gas constant (R = 8.31447 J moU K ) if is given in J kg then the gas constant depends on the gas species Radial coordinate reaction rate Entropy... 

Gunther Eichhorn I should like to discuss an example of metal catalysis that does not fit the picture presented in Dr. Jones paper. It is a process mediated by either metal ions or protons, with the latter functioning more efficiently. We have become interested in reactions of metal ions with polynucleotides, in the hope of using these coordination reactions to determine the sequence of bases along a polynucleotide chain. 

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