Why CO is more stronger ligand than NH3?

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pulsar.sx21... answered this

The field created by the Ligand CO is stronger than the ligand NH3. Consequently the splitting of d-orbital created by CO is larger than the NH3. Hence CO is more stronger ligand than the NH3.

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Laxmi answered this

Quite appreciable answer.

Sanjay Das answered this

In formation of a coordination compound ligand CO acts simultaneously as a sigma base as well as pi acids as it accepts a pair of electrons into its vacant anti bonding orbital from a filled d-orbital of metal to form a pi bond.

Sairaj Desai answered this

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Rohan Khurana answered this

CO has empty π-orbitals which overlap with filled d-orbitals of transition metals and form π-bonds by back bonding. These π-interactions increase the value of crystal field stabilization energy. As NH3 can't form π bonds by back bonding, therefore CO is stronger ligand than NH3.

Shweta answered this

pulsar ans is more appreciable

Haingh answered this

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Anuj Mishra answered this

The metal carbon 'pi' bond is formed by the donation of a pair of electron from field d-orbital of carbon monoxide (co). the metal to legand bonding creates a synergic effect which makes metal carbonyl bond strong than NH3

Anuj Mishra answered this

In CO lone pair of electron to be used for coordination terms from sigma antibonding 2S, whereas in NH3 lone pair is forn Sp3 orbital and is less easily available for coordination , therefore CO is stronger legand than NH3.