Physical organic chemistry

Physical organic chemistry

Physical organic chemistry is the study of the interrelationships between structure and reactivity in organic molecules. It a part of organic chemistry by using tools of physical chemistry such as chemical equilibrium, chemical kinetics, thermochemistry, and quantum chemistry.

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Physical organic chemistry

bathochromic shift effect

Chemistry; Physical organic chemistry

Shift of a spectral band to lower frequencies (longer wavelengths) owing to the influence of substitution or a change in environment. It is informally referred to as a red shift and is opposite to ...

Bell-Evans-Polanyi principle

Chemistry; Physical organic chemistry

The linear relation between energy of activation (E a ) and enthalpy of reaction (ΔH r ) sometimes observed within a series of closely related reactions. E a = A + BΔH r

benzyne

Chemistry; Physical organic chemistry

1,2-Didehydrobenzene (the aryne derived from benzene) and its derivatives formed by substitution. The terms m- and p-benzyne are occasionally used for 1,3- and 1,4-didehydrobenzene, respectively.

bifunctional catalysis

Chemistry; Physical organic chemistry

Catalysis (usually for hydron transfer) by a bifunctional chemical species involving a mechanism in which both functional groups are implicated in the rate-controlling step, so that the corresponding ...

binding site

Chemistry; Physical organic chemistry

A specific region (or atom) in a molecular entity that is capable of entering into a stabilizing interaction with another molecular entity. An example of such an interaction is that of an active site ...

bond

Chemistry; Physical organic chemistry

There is a chemical bond between two atoms or groups of atoms in case that the forces acting between them are such as to lead to the formation of an aggregate with sufficient stability to make it ...

bond energy

Chemistry; Physical organic chemistry

The average value of the gas-phase bond-dissociation energies (usually at a temperature of 298 K) for all bonds of the same type within the same chemical species. The mean bond energy for methane, ...