will result in ionisation isomers. Geometrical isomerism exists in heteroleptic complexes due to different possible three dimensional spatial arrangements of the ligands around the central metal atom. This type of isomerism exists in square planner and octahedral complexes. Coordination compounds which possess chairality exhibit optical isomerism similar to organic compounds.
The pair of two optically active isomers which are mirror images of each other are called enantiomers. Linus Pauling proposed the Valence Bond Theory (VBT) which assumes that the bond formed between the central metal atom and the ligand is purely covalent. Bethe and Van vleck treated the interaction between the metal ion and the ligands as electrostatic and extended the Crystal Field Theory (CFT) to explain the properties of coordination compounds. XII U5 Coordination XII U5 Coordination - - - - EVALUATION Choose the correct answer: .
The sum of primary valence and secondary valence of the metal M in the complex M en Ox Cl