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

Enforced concerted mechanism

Chemistry; Physical organic chemistry

Variation of reaction parameters in a series of reactions proceeding in non-concerted steps may lead to a situation, where the putative intermediate will possess a lifetime shorter than a bond ...

Entering group

Chemistry; Physical organic chemistry

An atom or group that forms a bond to what is considered to be the main part of the substrate during a reaction. For example: the attacking nucleophile in a bimolecular nucleophilic substitution ...

Epimer

Chemistry; Physical organic chemistry

A diastereoisomer that has the opposite configuration at only one of two or more tetrahedral "stereogenic" centres present in the respective molecular entity.

Epimerization

Chemistry; Physical organic chemistry

Interconversion of epimers by reversal of the configuration at one of the "stereogenic" centers.

Heteroconjugation

Chemistry; Physical organic chemistry

(1) Association between a base and the conjugate acid of a different base through a hydrogen bond (B' .... HB + or A'H .... A - ). The term has its origin in the conjugate acid-base pair and is in ...

Hard acid

Chemistry; Physical organic chemistry

A Lewis acid with an acceptor centre of low polarizability. Other things being approximately equal, complexes of hard acids and bases or soft acids and bases have an added stabilisation (sometimes ...

Heterolytic bond-dissociation energy

Chemistry; Physical organic chemistry

The energy required to break a given bond of some specific compound by heterolysis. For the dissociation of a neutral molecule AB in the gas phase into A + and B - the heterolytic bond-dissociation ...