IGNOU MCH 11 2026 2027 - Which metals form dinitrogen complexes? Which other ligands can coexis

Question

Which metals form dinitrogen complexes? Which other ligands can coexist in a nitrogen metal complex? Give any two examples of such complexes are prepared by using nitrogen gas directly. Give suitable chemical equations.

17 Jul 2026

Answer :

Word Count : 271

Dinitrogen complexes are coordination compounds in which molecular nitrogen (N₂) acts as a ligand by donating electron density to a transition metal and accepting electron density through π-back bonding. Such complexes are formed mainly by transition metals in low oxidation states because they possess sufficient electron density for effective back-donation into the antibonding orbitals of N₂, thereby weakening the N≡N bond. Metals known to form dinitrogen complexes include titanium, vanadium, chromium, molybdenum, tungsten, manganese, iron, ruthenium,

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