303014-22-4Relevant academic research and scientific papers
The photodecarboxylation of [N-N-bis-4-pyridylmethyOamino acidato]phenanthrolinecobalt(ni) complexes: - Formation and decomposition of metallacyclic species
Hartshorn, Richard M.
, p. 2801 - 2808 (2000)
Photolysis of [N,N-bis(2-pyridylmethyl)amino acidato]phenanthrolinecobalt(in) complexes (amino acidato = glycinato (dpg) or alaninato (dpa) or 2-cyclopropylglycinato (dpc)) with UV light led to elimination of carbon dioxide from the amino acidato chelate and the formation of cobalt(ni) complexes which contain a Co-C-N metallacycle. These photolysis products were characterised by NMR and UV-vis spectroscopy and, in the case of dpg, by X-ray crystallography. The eventual decomposition reactions of the photolysis products were monitored by NMR spectroscopy in both D2O and dilute DC1. The decomposition products included bis(2-pyridylmethyl)amine (bpa) and an aldehyde derived from the carbon atom of the metallacycle and its alkyl substituents. A u-peroxo dinuclear cobalt(in) complex, [(bpa)(phen)(Co(O2)Co(phen)(bpa)]4+, was formed from the decomposition products and its structure determined by X-ray crystallography. Experiments with a cyclopropyl derivative demonstrate that any intermediates with a radical centre on what was the u-carbon of the amino acid must be very short-lived. The Royal Society of Chemistry 2000.
