期刊
CHEMICAL PHYSICS LETTERS
卷 675, 期 -, 页码 6-10出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2017.02.079
关键词
Reaction pathway; CBS calculation; Prebiotic chemistry; Astrophysics; Astrobiology
资金
- National Institute of Supercomputing and Network/Korea Institute of Science and Technology Information [KSC-2015-C1-041]
The potential energy surfaces for the formation of glycine from HCN and H2O were determined from CBS-QB3 calculations. After the formation of a HCN trimer, amino malononitrile, amino malononitrile mono amide (3) was formed by a water addition reaction. Two pathways were found for the subsequent reaction, 3 + 2H(2)O -> glycine + HNCO + NH3. One pathway involving an amino ketone was much more favored than the other pathway involving glycinamide. Addition of a water molecule as a catalyst greatly enhanced steps occurring by hydrogen rearrangement. (C) 2017 Elsevier B.V. All rights reserved.
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