Isomerism in Coordination Compounds Examples
Example 1: Draw all geometrical isomers of [Fe(NH3 )2 (CN)4 ]–.
Solution:
Example 2: Indicate the types of Isomerism exhibited by the following complexes
- [Co(en)3 ]Cl3
- [Co(NH3 )5 (NO2 )](NO3 )2
- [Pt(NH3 )(H2O)Cl2 ]
Solution:
- [Co(en)3 ]Cl3 —-> Optical isomerism
- [Co(NH3 )5 (NO2 )](NO3 )2 —-> Optical isomerism, Linkage isomerism, Ionization isomerism
- [Pt(NH3 )(H2O)Cl2 ] —-> Geometrical (cis-, trans-) isomerism
Example 3: How many Geometrical Isomers will be possible in [Co(NH3)3(Cl)3]?
Solution:
Two geometrical isomer is possible for [Co(NH3)3(Cl)3]–
Example 4: What are Ligands in Coordination Compounds?
Solution:
Ligands are ions or molecules that are bound to the central atom/ion of the coordination entity. Simple ions like Cl–, small molecules like H2O or NH3, larger molecules like H2NCH2CH2NH2 or N(CH2CH2NH2)3 , and even macromolecules like proteins can fall into this category.
Example 5: Draw the geometrical isomers of [Pt(NH3)(Br)(Cl)(Py)].
Solution:
Isomerism in Coordination Compounds
Isomerism in Coordination Compounds as the name suggests explores the concept of Isomerism in Coordination Compounds i.e., generally compounds formed by d-block elements. Isomerism is the phenomenon of exhibiting different molecular structures by the compounds with same molecular formula. The phenomenon of isomerism is quite significant in hydrocarbons however it is of no less importance in coordination compounds. Coordination Compounds are those chemical compounds in which a group of anions is attached to a central metal atom via covalent bonds. Coordinate compounds are also called coordinate complexes. The coordinate compounds having the same molecular formula but different arrangements of ligands are called isomers of coordination compounds and the phenomenon exhibited is called Isomerism in Coordination Compounds. In this article, we will learn about different types of isomerism exhibited by Coordination Compounds in detail.