| Autors: Aylward,N. Title: The Synthesis of Biological Molecules in the Universe Keywords: Amino-acids, nucleic acid bases, RNA, DNA, vitamins, terpene Abstract: Theoretical chemistry is applied to describe in detail the formation of reactive intermediates in a primeval atmosphere composed of hydrogen,carbon monoxide and ammonia that at a suitable temperature could equilibrate to form a cascade of the biological molecules that allow molecular evolution.Of importance is the formation of porphin that can act as a powerful catalyst.The Faraday effect is invoked to explain the formation of the chirality of the L-aminoacids and D-sugars.Also described is the formation of the information molecules,the nucleic acid bases,the nucleosides,nucleotides and their polymerization to RNA and DNA.The formation of the terpenes allows the further formation of the glycerides.This also leads to the formation of the vitamins.Most of the reactions appear to be exothermic except condensations involving carbon monoxide or ammonia.The reactions have been shown to be feasible from the overall enthalpy changes in the ZKE approximation at the HF and MP2 /6-6-31G* level. References Issue
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Вид: публикация в национален форум
