Interfacial formation constant

The molecular recognition ability of Pd(II)-5-Br-PADAP for the isomers of diazine derivatives (abbreviated as Dzs or N) has been evaluated. PdLCl reacted with a neutral diazine with one or two nitrogen atoms, forming a PdLN+ complex at the toluene-water interface. The interfacial formation constant (fii) of the PdLN+ complex was determined as follows [38] ... 

A linear relationship was obtained between the logarithmic interfacial formation constant (log / ,) for PdL+-diazine derivative complexes and the logarithmic ratio of the distribution constant (A D) to the acid-dissociation constant (Ka) for the two groups. PdL+-pyridazine derivative complexes showed much higher stability at the interface than pyrimidine and pyrazine derivative complexes. This result suggests that pyridazine derivative complexes become more... 

A linear relationship was obtained between the logarithmic interfacial formation constant (log P ) for PdL+-diazine derivative complexes and the logarithmic ratio of... 

Theoretical insight into the interfacial charge transfer at ITIES and detection mechanism of this type of sensor were considered [61-63], In case of ionophore assisted transport for a cation I the formation of ion-ionophore complexes in the organic (membrane) phase is expected, which can be described with the appropriate complex formation constant, /3ILnI. 

We will see that in the steady state of the blocking cells, we can extract partial conductivities, and from the transients chemical diffusion coefficients (and/or interfacial rate constants). Cell 7 combines electronic with ionic electrodes here a steady state does not occur but the cell can be used to titrate the sample, i.e., to precisely tune stoichiometry. Cell 1 is an equilibrium cell which allows the determination of total conductivity, dielectric constant or boundary parameters as a function of state parameters. In contrast to cell 1, cell 2 exhibits a chemical gradient, and can be used to e.g., derive partial conductivities. If these oxygen potentials are made of phase mixtures212 (e.g., AO, A or AB03, B203, A) and if MO is a solid electrolyte, thermodynamic formation data can be extracted for the electrode phases. 

The complex formation proceeded almost completely at the interface. The rate constant of k=5.3xl02M 1 s 1 was determined by a stopped-flow spectrometry in the region where the formation rate was independent of pH. The conditional interfacial rate constants represented by k[ = k k2 [HL] / (k2 + k i[H + ]) were larger in the heptane-water interface than the toluene-water interface, regardless of metal ions. The molecular dynamics simulation of the adsorptivities of 5-Br-PADAP in heptane-water and toluene-water interfaces suggested that 5-Br-PADAP could be absorbed at the interfacial region more closely to the aqueous phase, but 5-Br-PADAP in the toluene-water... 

L ML+ k, formation rate constant in bulk aqueous phase + L MLj " k, interfacial formation rate constant. 

Universal interfacial energy constant (this model assumes that all systems percolate at a universally valid threshold value of the interfacial energy Ag [28]), The merit of this work is that they have drawn attention to the role of the interfaces, even if they have failed to develop any ideas about the nature of the interaction at the interfaces, or the percolation structures, or the mechanisms of formation. For this reason it is not immediately obvious that two cornerstones of this theory, namely Ag and the influence of polymer viscosity, are not sufficiently well founded experimentally and cannot explain the percolation phenomenon. 

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