This article sums up the following principles from a series of experimental data:the apparent rate constant Kobsd of outer-sphere electron-transfer reactions between Cis-(Co(etaH)(en)_2) Br_3 and (Fe(CN)_6), formation constant of ion pair and electron transfer rate constant Ke each increase with an increase of pH of soluticn.
Structural modulation, electronic transfer and their correlation with the properties of Zn_(1-x)Co_xO nanorods
The number of electronic transfer Δ N=(x A- x B)/2( η A+ η B),which based on the concepts of absolute electronegativity, x , absolute hardness, η , and chemical potential, μ , in chemical reaction is first applied to the study of structure reactivity relationship of flotation reagents.
The electronic transfer coefficient (a), the number of electrons (n) and protons (m) involved in the electrode reaction of EBT and Ga(Ⅲ)-EBT were estimated to be 0.38 and 0.58 for a, 2 for n and m,resp ctively.
Thus, it is suggested that the electronic factor which means strong bonding of Ni to Ti3+ and electronic transfer between Ni and Ti3+ is not the main reason causing the strong metal support interaction (SMSI).
According to Mulliken overlap populations calculated for Ni -CO and C-O bond, it is found that the strong co-valent bonding of Ni to Ti3+ does not drastically suppress the ability of Ni atoms to adsorb CO, and the electronic transfer between Ti3+ and Ni atom does not lead to any increase in activation of adsorbed CO.
The results indicated that: the electrochemical reaction of epinephrine shown semirreversible character of electron transition at platinum electrode in 0.5mol/L H 2SO 4 solution, the kinetic parameters such as diffusion coefficient, D R , is 2.75×10 -6 cm 2/s; heterogeneous electron transfer rate constant, k s, is 2.27×10 -4 cm/s.
A great deal of researches have indicated that organic compounds is promising nonlinear optical materials, since they can be synthesized with strongπelectron conjugated systems and electron transition between ligands and central atoms, which result in enhancement of nonlinear polarizability.
It is deduced that F- and Cl- have entered into on the surface of the cathod and formed a bridged complex with reduced chromium dichromate, [CrIII-X--CrIII], in which electron transition was easily carried out.
Their molecule structures have strong π electron conjugated systems and electron transition between organic ligands and center metal atoms, which result an enhancement of their nonlinear polarizabilities.
Photoinduced intramolecular electron transfer process from C60 moiety to carbazole moiety has been studied by nanosecond laser flash photolysis.
The electron transfer coefficient and apparent reaction rate constant were determined to be 0.861 and 1.27 s-1.
This causes a significant increase in the efficiency of further electron transfer to the primary quinone acceptor as compared to a system with two absolutely symmetric electron transfer branches.
Reactions of electron transfer from the primary to secondary quinone acceptors and from the multiheme cytochrome c subunit to photoactive bacteriochlorophyll dimer were used as probes of electron transport efficiency.
The thermoinduced transition of the acceptor complex to the conformational state facilitating electron transfer to the secondary quinone acceptor was studied.
Although the two electron-transfer branches in the reaction centers (RC) of purple bacteria are virtually symmetric, it is well known that only one of them is functionally active (the A-branch).
The results indicate that residues Arg425 and Arg426 are involved in the formation of a heme-binding center and electrostatic interaction of cytochrome P450scc with its physiological electron-transfer partner, adrenodoxin.
The kinetics of oxidation of 4-hydroxybiphenyl (4-HBP) catalyzed by laccase from Polyporus pinsitus was studied in the presence of methyl syringate (MS), which acts as an electron-transfer mediator.
Application of the Quantum Beats Method to the Determination of the Electron-Transfer Radius in Nonpolar Solvents
Formation Enthalpy of Exciplexes with Partial Charge Transfer as a Function of the Electron-Transfer Driving Force
The temperature dependence and rate of the Z1-center formation is in agreement with the corresponding results on FA-center formation, demonstrating that Z1-centers are formed as the consequence of an ionic process and not a mere electronic transfer.
This work indicates that the excitation to the first and second singlet induces an electronic transfer from the heteroatom in the case of ortho and para derivatives; for meta compounds, the same phenomenon occurs for the four first singlets.
Electronic transfer processes studied at different time scales by selective resonant core hole excitation of adsorbed molecules
Direct electronic transfer of PACS images reduces the number of steps involved in creating publication-quality images as well as providing the means to produce high-quality radiographic images in a digital environment.
Electronic transfer in spinel chalcogenides:119Sn M?ssbauer spectroscopy and7Li N.M.R.