Question

Write the structure of the geometrical isomer of the following complex:

[Pt(gly)₂]

Write the structure of cis- and trans-isomers of the following complex: 

[Pt(gly)₂]

Answer 1

The complex [Pt(gly)₂] consists of platinum (Pt) at its center surrounded by two glycinate (gly) ligands, each of which can bind via its amine group (–NH2) and carboxylate group (–COO–). Since glycinate is a bidentate ligand, it attaches to the platinum at two sites. The coordination geometry around platinum (Pt) is typically square planar for a Pt²⁺ complex.

1. Cis isomer: The two glycinate ligands are adjacent to each other (90° angle) in the square planar geometry.
   
2. Trans isomer: The two glycinate ligands are opposite each other (180° angle) in the square planar geometry.