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Free keywords:
Bonding analysis;
Bond strength;
Carbonyl complexes;
Quantum chemical calculations;
Transition metals
Abstract:
Surprising trendsin the M–CO bond dissociation energies (see illustration; n = number of carbonyl ligands) are revealed by quantum chemical calculations for the title molecules. Analysis of the bonding interactions reveals an interplay of coulombic and covalent interactions between the metal cations and CO. Theoretical predictions are made for strongly bound carbonyl complexes which have not yet been synthesized.