skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Laboratory Investigations into the Spectra and Origin of Propylene Oxide: A Chiral Interstellar Molecule

Abstract

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, here we report infrared spectra, absorption coefficients, and band strengths of solid propylene oxide along with the first measurement of its refractive index and a calculation of its density, all for the amorphous solid form of the compound. We present the first experimental results showing a low-temperature formation pathway for propylene oxide near 10 K in interstellar ice analogs. Connections are drawn between our new results and the interstellar molecules propanal and acetone, and predictions are made about several as yet unobserved vinyl alcohols and methylketene. Comparisons are given to earlier laboratory work and a few applications to interstellar and solar system astrochemistry are described.

Authors:
;  [1];  [2]
  1. Astrochemistry Laboratory (Code 691), NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  2. Department of Chemistry, Kutztown University, Kutztown, PA 19530 (United States)
Publication Date:
OSTI Identifier:
22663900
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 835; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION SPECTRA; ACETONE; ALCOHOLS; COMPARATIVE EVALUATIONS; DENSITY; FORECASTING; ICE; INFRARED SPECTRA; INTERSTELLAR SPACE; MOLECULES; OXIDES; PROPYLENE; REFRACTIVE INDEX; SOLAR SYSTEM; SOLIDS

Citation Formats

Hudson, R. L., Loeffler, M. J., and Yocum, K. M., E-mail: Reggie.Hudson@nasa.gov. Laboratory Investigations into the Spectra and Origin of Propylene Oxide: A Chiral Interstellar Molecule. United States: N. p., 2017. Web. doi:10.3847/1538-4357/835/2/225.
Hudson, R. L., Loeffler, M. J., & Yocum, K. M., E-mail: Reggie.Hudson@nasa.gov. Laboratory Investigations into the Spectra and Origin of Propylene Oxide: A Chiral Interstellar Molecule. United States. doi:10.3847/1538-4357/835/2/225.
Hudson, R. L., Loeffler, M. J., and Yocum, K. M., E-mail: Reggie.Hudson@nasa.gov. Wed . "Laboratory Investigations into the Spectra and Origin of Propylene Oxide: A Chiral Interstellar Molecule". United States. doi:10.3847/1538-4357/835/2/225.
@article{osti_22663900,
title = {Laboratory Investigations into the Spectra and Origin of Propylene Oxide: A Chiral Interstellar Molecule},
author = {Hudson, R. L. and Loeffler, M. J. and Yocum, K. M., E-mail: Reggie.Hudson@nasa.gov},
abstractNote = {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, here we report infrared spectra, absorption coefficients, and band strengths of solid propylene oxide along with the first measurement of its refractive index and a calculation of its density, all for the amorphous solid form of the compound. We present the first experimental results showing a low-temperature formation pathway for propylene oxide near 10 K in interstellar ice analogs. Connections are drawn between our new results and the interstellar molecules propanal and acetone, and predictions are made about several as yet unobserved vinyl alcohols and methylketene. Comparisons are given to earlier laboratory work and a few applications to interstellar and solar system astrochemistry are described.},
doi = {10.3847/1538-4357/835/2/225},
journal = {Astrophysical Journal},
number = 2,
volume = 835,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}