How many of the following ligands form atleast 1 five membered ring having atleast 1 nitrogen and oxygen as donor atoms :
Oxalato (ox)^-2 , Acetylacetonato (acac)^-1 , Ethylene diamine (en) , Propylene diamine (pn) , Butylene diamine (bn) , Imidodiacetate (imda^2- ) , NTA^3- , EDTA^3- , gly^-1

Question

How many of the following ligands form atleast 1 five membered ring having atleast 1 nitrogen and oxygen as donor atoms :

Oxalato (ox)^-2 , Acetylacetonato (acac)^-1 , Ethylene diamine (en) , Propylene diamine (pn) , Butylene diamine (bn) , Imidodiacetate (imda^2- ) , NTA^3- , EDTA^3- , gly^-1

TestHub · Accepted Answer

Condition Required: The ligand must form a 5-membered ring containing both N and O as donor atoms attached to the metal center.

Excluded Ligands: $o x^{2 -}$ and $a c a c^{-}$ have only O-donor atoms, while $e n$ , $p n$ , and $bn$ have only N-donor atoms.

Included Ligands: $g l y^{-}$ , $im d a^{2 -}$ , $NT A^{3 -}$ , and $E D T A^{4 -}$ all possess glycinate-like arms ( $- N - C H_{2} - COO -$ ) that form stable 5-membered rings with both N and O acting as the donor atoms.

Chemistry - Coordination Chemistry Question with Solution | TestHub

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