Stereochemistry

type of symmetry in molecules

process of sorting a racemic mixture into more-pure enantiomeric subdivisions

Enzyme attached to an inert material

special case of chirality for two dimensions

influence of substituents on the thermodynamics and kinetics of ring-closing reactions in organic chemistry

In chemistry, hexol is a cation with formula {[Co(NH3)4(OH)2]3Co}6+ — a coordination complex consisting of four cobalt cations in oxidation state +3, twelve ammonia molecules , and six hydroxy anions , with a net charge of +6. The hydroxy groups act as bridges between the central cobalt atom and the other three, which carry the ammonia ligands.

Shape of molecular compounds

In chemistry, a pseudorotation is a set of intramolecular movements of attached groups (i.e., ligands) on a highly symmetric molecule, leading to a molecule indistinguishable from the initial one. The International Union of Pure and Applied Chemistry (IUPAC) defines a pseudorotation as a "stereoisomerization resulting in a structure that appears to have been produced by rotation of the entire initial molecule", the result of which is a "product" that is "superposable on the initial one, unless different positions are distinguished by substitution, including isotopic substitution".

method of measuring the dispersion of an optically active molecule to determine the relative magnitude of right- or left-handed components, and some structural features of the molecule

In stereochemistry, topicity is the stereochemical relationship between substituents and the structure to which they are attached. Depending on the relationship, such groups can be heterotopic, homotopic, enantiotopic, or diastereotopic.

molecular geometry

chemical compound

molecular geometry

Topoisomers or topological isomers are molecules with the same chemical formula and stereochemical bond connectivities but different topologies. Examples of molecules for which there exist topoisomers include DNA, which can form knots, and catenanes. Each topoisomer of a given DNA molecule possesses a different linking number associated with it. DNA topoisomers can be interchanged by enzymes called topoisomerases. Using a topoisomerase along with an intercalator, topoisomers with different linking number may be separated on an agarose gel via gel electrophoresis. thumb|center|Three topoisomers

classification of pericyclic and electrocyclic chemical reactions

physico-chemical process by which a molecule configures itself into its normal conformation without any external agent

chemical reaction

number of stereoisomers without any internal planes of symmetry is 2ⁿ

effect on molecular structures, physical properties and reactivities due to the molecules' electronic structures, in particular the interaction between atomic and/or molecular orbitals