Chemistry - Coordination Chemistry Question with Solution | TestHub

The complex is $[\mathrm{Co}(\mathrm{gly}{)}_2(\mathrm{pn})]{\mathrm{NO}}_2$.

Glycinate (gly) is a bidentate ligand, coordinating via one oxygen and one nitrogen atom.

Propylenediamine (pn) is also a bidentate ligand, coordinating via two nitrogen atoms.

Therefore, Co is bonded to two N atoms from two glycinate ligands and two N atoms from one pn ligand.

Total Co-N linkages = $2(fromgly)+2(frompn)=4$.