There are two possible structural isomers for the coordination compound [Co en 2Cl2]+, where en is ethylenediamine. These isomers are known as cis and trans isomers.1. Cis isomer: In the cis isomer, the two chloride ligands are adjacent to each other on the cobalt center. The ethylenediamine ligands are also adjacent to each other. Cl | Co / \ en en \ / Cl2. Trans isomer: In the trans isomer, the two chloride ligands are opposite to each other on the cobalt center. The ethylenediamine ligands are also opposite to each other. Cl | Co / \ en Cl \ / enThese two isomers have different spatial arrangements of the ligands, which can lead to different chemical and physical properties.