Evidence of π,π-Co-ordination of 1,4-diazabuta-1,3-dienes (dab) after photolysis of [Fe(CO)3(dab)] in argon and carbon monoxide matrices at 10 K
Abstract
It is shown that 1,4-diazabuta-1,3-diene (dab) ligands containing substituents on the nitrogen atoms which are not too bulky can undergo a changeover from σ,σ-N,N′ to π,π-co-ordination in [Fe(CO)3(dab)] if this complex is irradiated in an Ar or CO matrix at 10 K into its lowest energy absorption band.
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