Preferred Label : coordination;
IUPAC definition : The formation of a covalent bond, the two shared electrons of which have come from
only one of the two parts of the molecular entity linked by it, as in the reaction
of a Lewis acid and a Lewis base to form a Lewis adduct; alternatively, the bonding
formed in this way. In the former sense, it is the reverse of unimolecular heterolysis.
'Coordinate covalence' and 'coordinate link' are synonymous (obsolescent) terms. The
synonym 'dative bond' is obsolete. (The origin of the bonding electrons has by itself
no bearing on the character of the bond formed. Thus, the formation of methyl chloride
from a methyl cation and a chloride ion involves coordination; the resultant bond
obviously differs in no way from the C–Cl bond in methyl chloride formed by any other
path, e.g. by colligation of a methyl radical and a chlorine atom.) The term is also
used to describe the number of ligands around a central atom without necessarily implying
two-electron bonds.;
Origin ID : C01329;
Automatic exact mappings (from CISMeF team)
- False automatic mappings
- See also
The formation of a covalent bond, the two shared electrons of which have come from
only one of the two parts of the molecular entity linked by it, as in the reaction
of a Lewis acid and a Lewis base to form a Lewis adduct; alternatively, the bonding
formed in this way. In the former sense, it is the reverse of unimolecular heterolysis.
'Coordinate covalence' and 'coordinate link' are synonymous (obsolescent) terms. The
synonym 'dative bond' is obsolete. (The origin of the bonding electrons has by itself
no bearing on the character of the bond formed. Thus, the formation of methyl chloride
from a methyl cation and a chloride ion involves coordination; the resultant bond
obviously differs in no way from the C–Cl bond in methyl chloride formed by any other
path, e.g. by colligation of a methyl radical and a chlorine atom.) The term is also
used to describe the number of ligands around a central atom without necessarily implying
two-electron bonds.
