DOI: 10.1016/j.epsl.2018.05.026
Scopus记录号: 2-s2.0-85048166312
论文题名: Chiral molecules in space and their possible passage to planetary bodies recorded by meteorites
作者: Pizzarello S. ; Yarnes C.T.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 496 起始页码: 198
结束页码: 205
语种: 英语
英文关键词: asteroidal water alteration
; carbonaceous meteorites
; chiral molecules
; enantiomer excesses
; propylene glycol
; propylene oxide
Scopus关键词: Enantiomers
; Glycols
; Meteorites
; Molecules
; Polyols
; Propylene
; Stereochemistry
; asteroidal water alteration
; Carbonaceous meteorites
; Chiral molecule
; Enantiomer excess
; Propylene glycols
; Propylene oxide
; Praseodymium compounds
英文摘要: We searched the ethanol extracts of the Murchison meteorite for propylene oxide (PrOx), the only chiral molecule discovered so far outside solar environments, and detected its likely derivative after isolation of the low boiling components of the extract. This compound is also chiral and, upon hydrolysis, produces propylene glycol (PrGl), the expected product of PrOx under these conditions. Both the PrOx derivative and PrGl were detected with variable enantiomeric excesses (ee) averaging at ∼10% and to have the (R)(+) configuration, i.e., for the same optical isomer as for sugars in the biosphere and sugar derivatives in meteorites. Besides PrGl, the hydrolysates also contained homologous compounds and polymeric materials with the combined δD (‰) of +235 and +65, respectively, suggesting a yet unknown compositional complexity in meteorites. The occurrence of ee in interstellar PrOx cannot be ascertained with current spectroscopic methodologies, however, the overall data reported here would allow to imply it. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109812
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: School of Molecular Sciences, Arizona State University, Tempe, AZ 85287-1604, United States; Department of Plant Sciences, University of California-Davis, Davis, CA 95616, United States
Recommended Citation:
Pizzarello S.,Yarnes C.T.. Chiral molecules in space and their possible passage to planetary bodies recorded by meteorites[J]. Earth and Planetary Science Letters,2018-01-01,496