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

bond number

Chemistry; Physical organic chemistry

The number of electron-pair bonds between two nuclei in any given Lewis formula. For example in ethene the bond number between the carbon atoms is two, and between the carbon and hydrogen atoms is ...

bond order

Chemistry; Physical organic chemistry

A theoretical index of the degree of bonding between two atoms relative to that of a normal single bond, i.e. the bond provided by one localized electron pair. In the valence-bond theory it is a ...

bond-dissociation energy

Chemistry; Physical organic chemistry

The enthalpy (per mole) required to break a given bond of some specific molecular entity by homolysis, e.g. for CH 4 → H 3 C . + H . symbolized as D(CH 3 -H) (cf. heterolytic bond-dissociation ...

borderline mechanism

Chemistry; Physical organic chemistry

A mechanism intermediate between two extremes, for example a nucleophilic substitution intermediate between S N 1 and S N 2, or intermediate between electron transfer and S N 2.

bridging ligand

Chemistry; Physical organic chemistry

A ligand attached to two or more, usually metallic, central atoms.

Brønsted acid

Chemistry; Physical organic chemistry

A molecular entity capable of donating a hydron (proton) to a base, (i.e. a "hydron donor") or the corresponding chemical species. For example: H 2 O, H 3 O + , CH 3 CO 2 H, H 2 SO 4 , HSO 4 - , ...

Bronsted acid

Chemistry; Physical organic chemistry

A molecular entity capable of donating a hydron (proton) to a base, (i.e. a "hydron donor") or the corresponding chemical species. For example: H 2 O, H 3 O + , CH 3 CO 2 H, H 2 SO 4 , HSO 4 - , ...