Question

Amino acids can act as ligands toward transition metal ions. The simplest amino acid is glycine $\mathbf{\left(}{\mathbf{NH}}_{\mathbf{2}}{\mathbf{CH}}_{\mathbf{2}}{\mathbf{CO}}_{\mathbf{2}}\mathbf{H}\mathbf{\right)}$. Draw a structure of the glycinate anion $\mathbf{\left(}{\mathbf{NH}}_{\mathbf{2}}{\mathbf{CH}}_{\mathbf{2}}\mathbf{C}{{\mathbf{O}}_{\mathbf{2}}}^{\mathbf{-}}\mathbf{\right)}$acting as a bidentate ligand. Draw the structural isomers of the square planar complex .$\mathbf{Cu}{\left({\mathrm{NH}}_2{\mathrm{CH}}_2{\mathrm{CO}}_2\right)}_{\mathbf{2}}$.

Short answer

Structure having two different donor centers.

Step-by-step solution

Identifying donor centers

Glycinate anion has two donor centers with one nitrogen and one oxygen center.

Picture

Geometry of the complex Cu(NH2CH2CO2)2

The complex has square planar geometry with Cu(II).

Bond formation

Anionic ligand bidentate glycinate forms total four bonds with central Cu atom.