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Additional
ligand
English Wikipedia - The Free Encyclopedia
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Ligand
In
coordination chemistry
, a
ligand
is an
ion
or
molecule
(
functional group
) that binds to a central
metal
atom to form a
coordination complex
. The bonding between metal and ligand generally involves formal donation of one or more of the ligand's
electron pairs
. The nature of metal-ligand bonding can range from
covalent
to
ionic
. Furthermore, the metal-ligand
bond order
can range from one to three. Ligands are viewed as
Lewis base
s, although rare cases are known to involve
Lewis acid
ic "ligand."
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