Evidence of metal-ligand covalent bonding in complexes

1.Cr(CO)6 is a volatile compound and Ni(CO)4 is a liquid. This indicates that there is a covalent bonding between metal and ligand instead of the ionic. If there would be an ionic bond, then Cr(CO)6  should be non-volatile and  Ni(CO)4 is solid. 2. Electron Spin Resonance(ESR): The ESR spectrum of [IrCl6]2- suggests that the single …

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Splitting of d-orbital in octahedral complex

Crystal field splitting in Octahedral complex:  In a free metal cation all the five d-orbitals are degenerate(i.e.these have the same energy.In octahedral complex say [ML6]n+the metal cation is placed at the center of the octahedron and the six ligands are at the six corners. These six corners are directed along the cartesian coordinates i.e. along …

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Hybridisation in outer orbital octahedral complex

Outer orbital octahedral complex:         Let’s take an example   [Fe(H2O)5(NO)]2+ In this complex ion oxidation state of Fe is +1, because NO exists in +1 oxidation state in a complex of Fe and it is valence shell electronic configuration is 3d6, 4s1 Magnetic moment measurement indicates that its experimental magnetic moment is …

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Inner orbital octahedral complex

Let’s discuss inner orbital complexing taking an example, [Co(CN)6]3-  ion In this complex oxidation state of cobalt is +3              Valence shell electronic configuration is Magnetic moment measurement indicates that  [Co(CN)6]3-C ion is diamagnetic(given). So that all the d-electrons arranged in such a way, that no unpaired electron is left in the …

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