New Polyazaporphine Chemistry for the Origin of Life. A Porphine Solar Energy Transducer for Origin of Life Chemistry: A Possible Synthetic Patj from HCN to an Octaazaporphine via 4H-Imidazol-4-Imine [(HCN)_3] Related Chemistry

Details New Polyazaporphine Chemistry for the Origin of Life. A Porphine Solar Energy Transducer for Origin of Life Chemistry: A Possible Synthetic Patj from HCN to an Octaazaporphine via 4H-Imidazol-4-Imine [(HCN)_3] Related Chemistry New Polyazaporphine Chemistry for the Origin of Life. A Porphine Solar Energy Transducer for Origin of Life Chemistry: A Possible Synthetic Patj from HCN to an Octaazaporphine via 4H-Imidazol-4-Imine [(HCN)_3] Related Chemistry

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998oleb...28...27n&link_type=abstract

Origins of Life and Evolution of the Biosphere, v. 28, Issue 1, p. 27-45 (1998).

Physics

Scientific paper

Molecular orbital spectral predictions suggest that 2,5,7,10,12,15,17,20-octaaza-21H, 23H-porphine has a visible spectral range closely matching that of chlorophyll-a. Since the octaazaporphine is, in its core, a simple derivative of an (HCN)_12 oligomer, this fact, together with its spectral properties, would suggest that it occupies a high rank as a primordial porphinic solar energy transducer for photochemistry essential to life's formation. The demonstration that the mass 324 hexahydrooctaazaporphine is formed in protic media by the cyclotetramerization of imidazol-4-aminohydroxonium ion or the derived nitrenium ion, and that a mass 318 species consonant with that of the Hückel aromatic octaazaporphine is observed in the course of these studies, strongly supports the proposed octaazaporphine synthesis in a prebiotic hydrocyanic acid milieu.

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