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1,252 results

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Page 1
Interstellar H(3)(+).
Oka T. Oka T. Proc Natl Acad Sci U S A. 2006 Aug 15;103(33):12235-42. doi: 10.1073/pnas.0601242103. Epub 2006 Aug 7. Proc Natl Acad Sci U S A. 2006. PMID: 16894171 Free PMC article.
Protonated molecular hydrogen, H(3)(+), is the simplest polyatomic molecule. It is the most abundantly produced interstellar molecule, next only to H(2), although its steady state concentration is low because of its extremely high chemical reactivity. H …
Protonated molecular hydrogen, H(3)(+), is the simplest polyatomic molecule. It is the most abundantly produced interstellar m …
Interstellar hide and go seek: C(3)H(4)O. There and back (again).
Field-Theodore TE, Taylor PR. Field-Theodore TE, et al. Phys Chem Chem Phys. 2022 Aug 17;24(32):19184-19198. doi: 10.1039/d2cp00995a. Phys Chem Chem Phys. 2022. PMID: 35730752
The molecular species C(3)H(4)O represents a striking example of an astrochemical conundrum. With more than 60 structural isomers theoretically possible, to date only acrolein (CH(2)CHCHO) has been identified in the Sgr B2(N) region of the interstellar medium (ISM). …
The molecular species C(3)H(4)O represents a striking example of an astrochemical conundrum. With more than 60 structural isomers the …
Bottom-Up Formation of Antiaromatic Cyclobutadiene (c-C(4)H(4)) in Interstellar Ice Analogs.
Wang J, Marks JH, Eckhardt AK, Kaiser RI. Wang J, et al. J Phys Chem Lett. 2024 Feb 8;15(5):1211-1217. doi: 10.1021/acs.jpclett.3c03524. Epub 2024 Jan 25. J Phys Chem Lett. 2024. PMID: 38272465
Antiaromatic cyclobutadiene (c-C(4)H(4)) is the simplest prototype of [n]annulenes and a key reactive intermediate with significant ring strain, serving as the model compound for antiaromatic systems in organic chemistry. ...These findings advance our fundamental understan …
Antiaromatic cyclobutadiene (c-C(4)H(4)) is the simplest prototype of [n]annulenes and a key reactive intermediate with significant r …
Identification of HOC()HC(O)H, HOCH(2)C()O, and HOCH(2)CH(2)O() Intermediates in the Reaction of H + Glycolaldehyde in Solid Para-Hydrogen and Its Implication to the Interstellar Formation of Complex Sugars.
Joshi PR, Lee YP. Joshi PR, et al. J Am Chem Soc. 2024 Aug 21;146(33):23306-23320. doi: 10.1021/jacs.4c05896. Epub 2024 Aug 9. J Am Chem Soc. 2024. PMID: 39121440 Free PMC article.
Glycolaldehyde [HOCH(2)C(O)H, GA], the primitive sugar-like molecule detected in the interstellar medium (ISM), is a potential precursor for the synthesis of complex sugars. ...In addition, Cc-HOCH(2)CH(2)O() (1) and C()H(2)OH + H(2)CO (7) were produce …
Glycolaldehyde [HOCH(2)C(O)H, GA], the primitive sugar-like molecule detected in the interstellar medium (ISM), is a potential …
Interstellar molecules.
Turner BE. Turner BE. J Mol Evol. 1980 May;15(2):79-101. doi: 10.1007/BF01732663. J Mol Evol. 1980. PMID: 6995621 Review.
The study of interstellar molecules broadly includes two areas of interest. One area uses the unique ability of molecules to act as probes of the physical conditions in the cold, dense, visually opaque component of the interstellar medium. The physical properties of …
The study of interstellar molecules broadly includes two areas of interest. One area uses the unique ability of molecules to act as p …
Formation of CO, CH(4), H(2)CO and CH(3)CHO through the H(2)CCO + H surface reaction under interstellar conditions.
Ibrahim M, Guillemin JC, Chaquin P, Markovits A, Krim L. Ibrahim M, et al. Phys Chem Chem Phys. 2022 Oct 5;24(38):23245-23253. doi: 10.1039/d2cp02980d. Phys Chem Chem Phys. 2022. PMID: 36134501
The reaction of ketene (H(2)CCO) with hydrogen atoms has been studied under interstellar conditions through two different experimental methods, occurring on the surface and in the bulk of H(2)CCO ice. ...Such fragmentation pathways should be included in the a …
The reaction of ketene (H(2)CCO) with hydrogen atoms has been studied under interstellar conditions through two different expe …
The significant role of water in reactions occurring on the surface of interstellar ice grains: Hydrogenation of pure ketene H(2)CCO ice versus hydrogenation of mixed H(2)CCO/H(2)O ice at 10 K.
Ibrahim M, Guillemin JC, Chaquin P, Markovits A, Krim L. Ibrahim M, et al. Phys Chem Chem Phys. 2024 Jan 31;26(5):4200-4207. doi: 10.1039/d3cp04601j. Phys Chem Chem Phys. 2024. PMID: 38230527 Free article.
In this context, we have combined experimental and theoretical studies to investigate ketene (CH(2)CO) + H solid-state reaction at 10 K in the presence and absence of water molecules under interstellar conditions, through H-bombardment of CH(2)CO and CH(2)CO/ …
In this context, we have combined experimental and theoretical studies to investigate ketene (CH(2)CO) + H solid-state reaction at 10 …
Interstellar Formation of Nitrogen Heteroaromatics [Indole, C(8)H(7)N; Pyrrole, C(4)H(5)N; Aniline, C(6)H(5)NH(2)]: Key Precursors to Amino Acids and Nucleobases.
Wang J, Nikolayev AA, Marks JH, Turner AM, Chandra S, Kleimeier NF, Young LA, Mebel AM, Kaiser RI. Wang J, et al. J Am Chem Soc. 2024 Oct 7. doi: 10.1021/jacs.4c09449. Online ahead of print. J Am Chem Soc. 2024. PMID: 39370877
Here, we report the first bottom-up formation pathways to the simplest prototype of NPAHs, indole (C(8)H(7)N), along with its building blocks pyrrole (C(4)H(5)N) and aniline (C(6)H(5)NH(2)) in low-temperature model interstellar ices composed of acetyle …
Here, we report the first bottom-up formation pathways to the simplest prototype of NPAHs, indole (C(8)H(7)N), along with its buildin …
Collisional excitation of interstellar PN by H(2): New interaction potential and scattering calculations.
Desrousseaux B, Quintas-Sánchez E, Dawes R, Marinakis S, Lique F. Desrousseaux B, et al. J Chem Phys. 2021 Jan 21;154(3):034304. doi: 10.1063/5.0039145. J Chem Phys. 2021. PMID: 33499633
Rotational excitation of interstellar PN molecules induced by collisions with H(2) is investigated. We present the first ab initio four-dimensional potential energy surface (PES) for the PN-H(2) van der Waals system. ...The dissociation energies were found to …
Rotational excitation of interstellar PN molecules induced by collisions with H(2) is investigated. We present the first ab in …
The interstellar chemistry of H(2)C(3)O isomers.
Loison JC, Agúndez M, Marcelino N, Wakelam V, Hickson KM, Cernicharo J, Gerin M, Roueff E, Guélin M. Loison JC, et al. Mon Not R Astron Soc. 2016 Mar 11;456(4):4101-4110. doi: 10.1093/mnras/stv2866. Mon Not R Astron Soc. 2016. PMID: 27013768 Free PMC article.
We present the detection of two H(2)C(3)O isomers, propynal and cyclopropenone, toward various starless cores and molecular clouds, together with upper limits for the third isomer propadienone. We review the processes controlling the abundances of H(2)C(3)O isomers …
We present the detection of two H(2)C(3)O isomers, propynal and cyclopropenone, toward various starless cores and molecular clouds, t …
1,252 results