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Bidentate (also called didentate) ligands bind with two atoms, an example being ethylenediamine. Structure of the pharmaceutical Oxaliplatin, which features two different bidentate ligands. Tridentate ligands bind with three atoms, an example being terpyridine. Tridentate ligands usually bind via two kinds of connectivity, called "mer" and "fac ...
A classic bidentate ligand is ethylenediamine, which is derived by the linking of two ammonia groups with an ethylene (−CH 2 CH 2 −) linker. A classic example of a polydentate ligand is the hexadentate chelating agent EDTA , which is able to bond through six sites, completely surrounding some metals.
Being the conjugate base of a strong acid (nitric acid, pK a = -1.4), nitrate has modest Lewis basicity.Two coordination modes are common: unidentate and bidentate.Often, bidentate nitrate, denoted κ 2-NO 3, is bound unsymmetrically in the sense that one M-O distance is clearly bonding and the other is more weakly interacting. [2]
The interaction of ligands with their binding sites can be characterized in terms of a binding affinity. In general, high-affinity ligand binding results from greater attractive forces between the ligand and its receptor while low-affinity ligand binding involves less attractive force.
In chemistry, linkage isomerism or ambidentate isomerism is a form of structural isomerism in which certain coordination compounds have the same composition but differ in which atom of the ligand is bonded to the metal. Typical ligands that give rise to linkage isomers are: cyanide, CN − – isocyanide, NC −; cyanate, OCN − – isocyanate ...
To a single metal ion, carbonate is observed to bind in both unidentate (κ 1-) and bidentate (κ 2-) fashions. [5] In the covalent bond classification method, κ 1-carbonate is anX ligand and κ 2-carbonate is an X 2 ligand. With two metals, the number of bonding modes increases because carbonate often serves as a bridging ligand.
An example of chelating nitrite is [Cu(bipy) 2 (O 2 N)]NO 3 – "bipy" is the bidentate ligand 2,2′-bipyridyl. This bonding mode is sometimes described as κ 2O,O-NO 2.. The kinetically-favored O-bonded isomer [(NH 3) 5 Co−ONO] 2+ converts to [(NH 3) 5 Co−NO 2] 2+. In its reaction with ferric porphyrin complexes, nitrite gives the O ...
An example of a μ 2 bridging ligand, represented with the red letter "L". In coordination chemistry, a bridging ligand is a ligand that connects two or more atoms, usually metal ions. [1]