- 産業: Software
- Number of terms: 862
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CambridgeSoft, based in Cambridge, Massachusetts, USA, is a cheminformatics software and consulting company. The company was founded in 1986 by Stewart Rubenstein, then a graduate student in chemistry at Harvard University, and has since remained independent. The company's historical main product ...
An abstraction reaction is a chemical reaction where the main feature is the bimolecular removal of an atom from a molecular entity.
Industry:Software
The constitution of a molecular entity is the description of the identity and connectivity (including corresponding bond multiplicities) of the atoms in a molecular entity (omitting any distinction from their spatial arrangement).
Industry:Software
A molecular entity is any constitutionally or isotopically distinct atom, molecule, radical, complex, conformer etc., identifiable as a separately distinguishable entity.
Industry:Software
A chemical species is an ensemble of chemically identical molecular entities (on the time scale of the observation).
Industry:Software
A substituent is an atom or group of bonded atoms that can be considered to have replaced a hydrogen atom (or two hydrogen atoms in the special case of bivalent groups) in a parent molecular entity (real or hypothetical).
Industry:Software
Ligands are atoms or groups bound to a "central atom" in a polyatomic molecular entity. The term is generally used in connection with metallic "central atoms".
Industry:Software
A group is a defined linked collection of atoms or a single atom within a molecular entity. (IUPAC 1997) (more) Note that a "group" is somewhat more specific or detailed than "substituent" or "ligand". "Substituents" can be composed of a collection of groups.
Industry:Software
A conformation is a distinct spatial arrangement of atoms that may convert to another conformation through rotation about a bond axis.
Industry:Software
Stereoisomers differ only in the spatial arrangements of their atoms. They are constitutionally identical. (same atoms and bond connectivity).
Industry:Software
A unimolecular reaction is a reaction where there is a single reactant molecular entity that is involved in the microscopic chemical event constituting an elementary reaction.
Industry:Software
