Discovery of the interstellar chiral molecule propylene oxide (CH3CHCH2O)

  title={Discovery of the interstellar chiral molecule propylene oxide (CH3CHCH2O)},
  author={Brett A. McGuire and P. Brandon Carroll and Ryan A. Loomis and Ian A Finneran and Phil R. Jewell and Anthony J. Remijan and Geoffrey A. Blake},
  pages={1449 - 1452}
Chiral molecule discovered in space A chiral molecule is one that has two forms that are mirror images of each other: enantiomers. Biological systems overwhelmingly use one enantiomer over another, and some meteorites show an excess of one type. The two forms are almost identical chemically, so how this excess first arose is unknown. McGuire et al. used radio astronomy to detect the first known chiral molecule in space: propylene oxide. The work raises the prospect of measuring the enantiomer… Expand
The quest of chirality in the interstellar medium
Context. All but one complex organic molecule (COM) detected so far in the interstellar medium (ISM) are achiral; propylene oxide (c-C2H3O)-CH3 is the only exception to this. Finding other chiralExpand
The Astrochemical Observatory: Experimental and Computational Focus on the Chiral Molecule Propylene Oxide as a Case Study
A survey of recent advances in chiral research is presented, designing and illustrating a number of possible experiments for the demonstration of chiral effects in the dynamics of the intermolecular interactions, suggesting a scenario for a stereo-directional origin of chirality. Expand
Chiral molecules in space and their possible passage to planetary bodies recorded by meteorites
Abstract 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 likelyExpand
Chiral discrimination in nuclear magnetic resonance spectroscopy.
  • P. Lazzeretti
  • Physics, Medicine
  • Journal of physics. Condensed matter : an Institute of Physics journal
  • 2017
The present review summarizes recent theoretical and experimental efforts to discriminate enantiomers via NMR spectroscopy, with the focus on the deep connection between chirality and symmetry properties under the combined set of fundamental discrete operations, namely charge conjugation, parity (space inversion) and time (motion) reversal. Expand
Laboratory blueprints for interstellar searches of aromatic chiral molecules: rotational signatures of styrene oxide.
The spectroscopic parameters and line lists of rotational transitions obtained here will assist future astrochemical studies of this class of chiral organic molecules. Expand
Laboratory Investigations into the Spectra and Origin of Propylene Oxide: A Chiral Interstellar Molecule
Propylene oxide was recently identified in the interstellar medium, but few laboratory results are available for this molecule to guide current and future investigations. To address this situation,Expand
Emergence of homochirality in large molecular systems
It is shown that large molecular systems are likely to undergo a phase transition toward a homochiral state, as a consequence of the fact that they contain a large number of chiral species. Expand
Chirality in molecular collision dynamics.
Ideas and recent advances about the role of chirality in molecular collisions are reviewed, designing and illustrating molecular beam experiments for the demonstration of chiral effects and suggesting a scenario for a stereo-directional origin of Chiral selection. Expand
Critical review of chirality indicators of extraterrestrial life
Abstract The major revolution in modern astronomy recognizing the universe as teeming with exoplanets, the discovery of liquid water in solar moons, and the continuing focus on Mars exploration, allExpand
Electron asymmetries in the photoionization of chiral molecules: possible astrophysical implications
ABSTRACT Photoelectron circular dichroism (PECD) is an intense orbital-specific chiroptical effect observed as asymmetries in the angular distribution of photoelectrons produced by photoionization ofExpand


Molecular asymmetry in extraterrestrial organic chemistry: An analytical perspective
Abstract The enantiomeric excesses determined for eight amino acids and one hydroxy acid of carbonaceous chondrite meteorites represent to date the only case of molecular asymmetry measured outsideExpand
Isotopic evidence for extraterrestrial non- racemic amino acids in the Murchison meteorite
It is shown that individual amino-acid enantiomers from Murchison are enriched in 15N relative to their terrestrial counterparts, so confirming an extraterrestrial source for an L-enantiomer excess in the Solar System that may predate the origin of life on the Earth. Expand
Complex Organic Interstellar Molecules
Of the over 150 different molecular species detected in the interstellar and circumstellar media, approximately 50 contain 6 or more atoms. These molecules, labeled complex by astronomers if not byExpand
We have performed reaction product screening measurements using broadband rotational spectroscopy to identify rotational transition matches between laboratory spectra and the Green Bank TelescopeExpand
Enantiomeric Excesses Induced in Amino Acids by Ultraviolet Circularly Polarized Light Irradiation of Extraterrestrial Ice Analogs: A Possible Source of Asymmetry for Prebiotic Chemistry
The discovery of meteoritic amino acids with enantiomeric excesses of the L-form (ee L) has suggested that extraterrestrial organic materials may have contributed to prebiotic chemistry and directedExpand
Detection of interstellar ethylene oxide (c-C2H4O).
It is suggested that grain chemistry might play an effective role in the production of c-C2H4O, which is a factor of more than 200 higher than the abundance for this molecule suggested by the "new standard" chemistry model of Lee, Bettens, & Herbst. Expand
Green Bank Telescope Detection of New Interstellar Aldehydes: Propenal and Propanal
The new interstellar molecules propenal (CH2CHCHO) and propanal (CH3CH2CHO) have been detected largely in absorption toward the star-forming region Sagittarius B2(N) by means of rotationalExpand
Cyclopropenone (c-H2C3O): A New Interstellar Ring Molecule
The three-carbon keto ring cyclopropenone (c-H2C 3O) has been detected largely in absorption with the 100 m Green Bank Telescope (GBT) toward the star-forming region Sagittarius B2(N) by means of aExpand
Laboratory and tentative interstellar detection of trans-methyl formate using the publicly available Green Bank Telescope PRIMOS survey
The rotational spectrum of the higher-energy trans conformational isomer of methyl formate has been assigned for the first time using several pulsed-jet Fourier transform microwave spectrometers inExpand
Complex organic molecules in the interstellar medium: IRAM 30 m line survey of Sagittarius B2(N) and (M)
The discovery of amino acids in meteorites and the detection of glycine in samples returned from a comet to Earth suggest that the interstellar chemistry is capable of producing such complex organicExpand