The Gas-Phase Formation of Methyl Formate in Hot Molecular Cores

By A. Horn, H. Møllendal, O. Sekiguchi, E. Uggerud, H. Roberts, E. Herbst, A. Viggiano, T. D. Fridgen. 2004

135 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/d5ee5be9d7f2e4fc64f115b79da50ee805c2c636

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Citations in the corpus

Testing grain-surface chemistry in massive hot-core regions (2007, background): “Horn et al. (2004) recently found the barrier for the gas phase formation of HCOOCH3 to be higher than previously anticipated.”
Complex Chemistry in Star-forming Regions: An Expanded Gas-Grain Warm-up Chemical Model (2008, background): “In addition, the quantum calculations of Horn et al. (2004) show that the ionic precursor of methyl formate cannot be formed in the gas phase at temperatures appropriate for hot cores.”
DETECTION OF THE SIMPLEST SUGAR, GLYCOLALDEHYDE, IN A SOLAR-TYPE PROTOSTAR WITH ALMA (2012, background): “Grain-surface reactions are becoming increasingly more popular, especially since the formationof methyl formate through gas-phase reactions seems to be too inefficient to explain the observed abundances (Horn et al. 2004).”
Organic molecules in the Galactic center - Hot core chemistry without hot cores (2006, background): “The relative abundance of dimethyl ether ((CH3)2O) is expected to change by three orders of magnitude in a short period of time after CH3O is ejected to gas phase (Millar et al. 1991; Caselli et al. 1993; Charnley et al. 1995; Horn et al. 2004).”
The Molecular Universe (2011, background): “First, formation of some of the key intermediaries is inhibited ( Horn et al. 2004).”
Formation of complex organic molecules in cold objects: the role of gas-phase reactions (2015, background): “…‡ E-mail: vianney.taquet@nasa.gov paradigm has lasted for almost two decades, until new observations (e.g. Cazaux et al. 2003; Bottinelli et al. 2007; Requena-Torres et al. 2006), laboratory experiments (Geppert et al. 2007) and theoretical studies (Horn et al 2004) challenged it.”
Detection of complex organic molecules in a prestellar core: a new challenge for astrochemical models (2012, methodology): “Appendices are available in electronic form at http://www.aanda.org than originally thought (Horn et al. 2004, for methyl formate).”
Molecular Evolution and Star Formation: From Prestellar Cores to Protostellar Cores (2007, background): “…theoretical calculations and laboratory experiments recently showed that gasphase reactions are much less efficient in producing some hot-core species, such as methyl formate (HCOOCH3) and dimethyl ether, than assumed in previous models (Horn et al. 2004; Geppert et al. 2006; Garrod & Herbst 2006).”
ON THE FORMATION OF CO2 AND OTHER INTERSTELLAR ICES (2011, background): “Ubiquitous molecules such as methanol (CH3OH) and methyl formate (HCOOCH3) exhibit interstellar abundances much greater than may be accounted for by gas-phase processes (e.g. Horn et al. 2004, Geppert et al. 2006, Garrod et al. 2007).”
Increased complexity in interstellar chemistry: detection and chemical modeling of ethyl formate and n-propyl cyanide in Sagittarius B2(N) (2009, background): “Enantiomers are stereoisomers that are mirror images of each other and non-superposable. phase production of methyl formate, a molecule ubiquitous in hot-core spectra, appears prohibitively slow (Horn et al. 2004), pointing to an efficient alternative.”
On the Formation of Glycolaldehyde (HCOCH2OH) and Methyl Formate (HCOOCH3) in Interstellar Ice Analogs (2007, background): “The formation of methyl formate by gas-phase synthesis alone similarly falls short by an order of magnitude (Horn et al. 2004).”
Complex Molecules in the L1157 Molecular Outflow (2008, background): “Moreover, recent results by Horn et al. (2004) indicate that gas-phase production of HCOOCH3 is much less efficient than previously considered by gas-phase models.”
Formation of Complex Molecules in Prestellar Cores: A Multilayer Approach (2017, background): “Reaction (24) has been turned down in Horn et al. (2004) who cited an older study by Freeman et al. (1978).”
Formation of methyl formate and other organic species in the warm-up phase of hot molecular cores (2006, methodology): “Recent quantum chemical calculations carried out by Horn et al. (2004) have shown that the first stage of the process – reaction between H2CO and CH3OH + 2 – is highly inefficient at producing protonated methyl formate.”
Hot corinos in NGC 1333-IRAS4B and IRAS2A (2006, background): “Horn et al. (2004) searched for more favorable transitions between the reactants and products of reaction (A.7), but were unsuccessful.”
Mechanistical Studies on the Irradiation of Methanol in Extraterrestrial Ices (2007, background): “Recent studies indicated that ion-molecule reactions of, for instance, CH3OH2 +, already included in these models, proceed slower than predicted and cannot explain the observed abundances of the C2H4O and C2H4O2 isomers quantitatively (Horn et al. 2004).”
REACTIVE DESORPTION AND RADIATIVE ASSOCIATION AS POSSIBLE DRIVERS OF COMPLEX MOLECULE FORMATION IN THE COLD INTERSTELLAR MEDIUM (2013, background): “We assume, as did Horn et al. (2004), that dissociative recombination of the product of reaction (10) can also form methyl formate + H despite the change in structure required.”
Formation rates of complex organics in UV irradiated CH3OH-rich ices I: Experiments (2009, background): “However, recent calculations and experiments suggest that some key gas-phase re ctions are less efficient than pre- viously thought; for example, the gas-phase formation of HCOOCH3 was found to be prohibitively inefficient (Horn et al. 2004).”