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When determining the stability constants for ternary complexes, M p A q B r it is common practice the fix the values for the corresponding binary complexes M p′ A q′ and M p′′ B q′′, at values which have been determined in separate experiments. Use of such constraints reduces the number of parameters to be determined, but may result ...
If the correction factor is greater than one, the reaction displays an asymmetric amplification, also known as a positive non-linear effect. Under the ML 2 model, a (+)-NLE infers a less reactive heterochiral catalyst. In this case, the equilibrium constant K also increases as the correction factor increases.
The steric factor, usually denoted ρ, [1] is a quantity used in collision theory. Also called the probability factor , the steric factor is defined as the ratio between the experimental value of the rate constant and the one predicted by collision theory.
The polar sensitivity factor ρ* can be obtained by plotting the ratio of the measured reaction rates (k s) compared to the reference reaction versus the σ* values for the substituents. This plot will give a straight line with a slope equal to ρ*. Similar to the Hammett ρ value:
Quantity (common name/s) (Common) symbol/s Defining equation SI unit Dimension Temperature gradient: No standard symbol K⋅m −1: ΘL −1: Thermal conduction rate, thermal current, thermal/heat flux, thermal power transfer
Matrix isolation is an experimental technique used in chemistry and physics. It generally involves a material being trapped within an unreactive matrix. A host matrix is a continuous solid phase in which guest particles (atoms, molecules, ions, etc.) are embedded. The guest is said to be isolated within the host matrix.
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At the length above the reference point, the concentration of colloidal particles decreases by a factor of . l g = k B T m ∗ g {\displaystyle l_{g}={\frac {k_{B}T}{m^{*}g}}} If the sedimentation length is much greater than the diameter d {\displaystyle d} of the colloidal particles ( l g >> d {\displaystyle l_{g}>>d} ), the particles can ...