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In supramolecular chemistry, [1] host–guest chemistry describes complexes that are composed of two or more molecules or ions that are held together in unique structural relationships by forces other than those of full covalent bonds. Host–guest chemistry encompasses the idea of molecular recognition and interactions through non-covalent ...
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:
Static molecular recognition is likened to the interaction between a key and a keyhole; it is a 1:1 type complexation reaction between a host molecule and a guest molecule to form a host–guest complex. To achieve advanced static molecular recognition, it is necessary to make recognition sites that are specific for guest molecules.
in chemistry, the molar extinction coefficient of a chromophore; in mathematics, a surreal number that is bigger than zero, but smaller than all the non-negative numbers. set membership symbol ∈ is based on ε
(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 P = / W ML 2 T −3: Thermal intensity I
The choice of reservoir depends on the problem; for example, the ocean may be a single reservoir or be split into multiple reservoirs. [20] In a type of model called a box model, a reservoir is represented by a box with inputs and outputs. [1]: 81 [20] Geochemical models generally involve feedback.
Letting slip a 1-0 lead and securing only a draw dealt a blow to Arsenal’s Premier League title hopes as the Gunners now sit five points behind league leader Liverpool, which has two games in hand.
In a reservoir model the geometric volume is divided into grid cells, and the area of interest now is the intersectional area between two adjoining cells. If these are true neighboring cells, the area is the common side surface, and if a fault is dividing the two cells, the intersection area is usually less than the full side surface of both ...