‘The crystal field splitting diagram for a trigonal planar complex ion’ should be identified. Concept introduction: The crystal field theory was first proposed by Hans Bethe to explain the colour and magnetic properties of crystalline solid compounds, is originally based on purely electrostatic interaction between the metal and ligands. The d-orbitals are degenerate and in presence of ligand field their degeneracy is lost and it splitted in different energy state from compound to compound it depends on the structural geometry and number of ligand present. The extent of such splitting naturally depend upon the strength of the field exerted by the ligands, this in turn depends on the distance and intensity of attraction between the metal atom and the ligand. Since the p-orbital of a metal is full and equally populated, splitting of p-orbital will not have any effect. Hence the d-orbitals are most affected in presence of ligand.

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Chapter 22, Problem 70E

Interpretation Introduction

Interpretation:

‘The crystal field splitting diagram for a trigonal planar complex ion’ should be identified.

Concept introduction:

The crystal field theory was first proposed by Hans Bethe to explain the colour and magnetic properties of crystalline solid compounds, is originally based on purely electrostatic interaction between the metal and ligands. The d-orbitals are degenerate and in presence of ligand field their degeneracy is lost and it splitted in different energy state from compound to compound it depends on the structural geometry and number of ligand present. The extent of such splitting naturally depend upon the strength of the field exerted by the ligands, this in turn depends on the distance and intensity of attraction between the metal atom and the ligand. Since the p-orbital of a metal is full and equally populated, splitting of p-orbital will not have any effect. Hence the d-orbitals are most affected in presence of ligand.

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