Elucidating the chemical dynamics of the elementary reactions of the 1-propynyl radical (CH3CC; X2A1) with 2-methylpropene ((CH3)2CCH2; X1A1)

Medvedkov, Iakov A.; Nikolayev, Anatoliy A.; Yang, Zhenghai; Goettl, Shane J.; Mebel, Alexander M.; Kaiser, Ralf I.

doi:10.1039/d3cp05872g

Elucidating the chemical dynamics of the elementary reactions of the 1-propynyl radical (CH₃CC; X²A₁) with 2-methylpropene ((CH₃)₂CCH₂; X¹A₁)

Journal Article · Tue Jan 30 23:00:00 EST 2024 · Physical Chemistry Chemical Physics. PCCP

DOI:https://doi.org/10.1039/d3cp05872g· OSTI ID:2332871

^[1]; ^[2]; Yang, Zhenghai ^[3]; ^[3]; ^[4]; ^[3]

University of Hawaii at Manoa, Honolulu, HI (United States); University of Hawaii
Samara National Research University (Russia)
University of Hawaii at Manoa, Honolulu, HI (United States)
Florida International University, Miami, FL (United States)

Exploiting the crossed molecular beam technique, we studied the reaction of the 1-propynyl radical (CH₃CC; X²A₁) with 2-methylpropene (isobutylene; (CH₃)₂CCH₂; X¹A₁) at a collision energy of 38 ± 3 kJ mol^–1. The experimental results along with ab initio and statistical calculations revealed that the reaction has no entrance barrier and proceeds via indirect scattering dynamics involving C₇H₁₁ intermediates with lifetimes longer than their rotation period(s). The reaction is initiated by the addition of the 1-propynyl radical with its radical center to the π-electron density at the C1 and/or C2 position in 2-methylpropene. Further, the C₇H₁₁ intermediate formed from the C1 addition either emits atomic hydrogen or undergoes isomerization via [1,2-H] shift from the CH₃ or CH₂ group prior to atomic hydrogen loss preferentially leading to 1,2,4-trimethylvinylacetylene (2-methylhex-2-en-4-yne) as the dominant product. The molecular structures of the collisional complexes promote hydrogen atom loss channels. RRKM results show that hydrogen elimination channels dominate in this reaction, with a branching ratio exceeding 70%. Since the reaction of the 1-propynyl radical with 2-methylpropene has no entrance barrier, is exoergic, and all transition states involved are located below the energy of the separated reactants, bimolecular collisions are feasible to form trimethylsubstituted 1,3-enyne (p1) via a single collision event even at temperatures as low as 10 K prevailing in cold molecular clouds such as G+0.693. As a result, the formation of trimethylsubstituted vinylacetylene could serve as the starting point of fundamental molecular mass growth processes leading to di- and trimethylsubstituted naphthalenes via the HAVA mechanism.

View Accepted Manuscript (DOE)

Research Organization:: University of Hawaii at Manoa, Honolulu, HI (United States); Florida International University, Miami, FL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: FG02-03ER15411; FG02-04ER15570

OSTI ID:: 2332871

Alternate ID(s):: OSTI ID: 2371725
OSTI ID: 2287718

Journal Information:: Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 7 Vol. 26; ISSN 1463-9076

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

References (71)

Diastereo‐ and Enantioselective Gold(I)‐Catalyzed Intermolecular Tandem Cyclization/[3+3]Cycloadditions of 2‐(1‐Alkynyl)‐2‐alken‐1‐ones with Nitrones Liu, Feng; Qian, Deyun; Li, Lei Angewandte Chemie International Edition, Vol. 49, Issue 37 https://doi.org/10.1002/anie.201003136	journal	July 2010
Chemistry of Energetically Activated Cumulenes—From Allene (H2CCCH2) to Hexapentaene (H2CCCCCCH2) Gu, Xibin; Kaiser, Ralf I.; Mebel, Alexander M. ChemPhysChem, Vol. 9, Issue 3 https://doi.org/10.1002/cphc.200700609	journal	February 2008
The mystery of unidentified infrared emission bands Kwok, Sun Astrophysics and Space Science, Vol. 367, Issue 2 https://doi.org/10.1007/s10509-022-04045-6	journal	February 2022
Isotopic evidence from an Antarctic carbonaceous chondrite for two reaction pathways of extraterrestrial PAH formation Naraoka, Hiroshi; Shimoyama, Akira; Harada, Kaoru Earth and Planetary Science Letters, Vol. 184, Issue 1 https://doi.org/10.1016/S0012-821X(00)00316-2	journal	December 2000
Laboratory investigation on the formation of unsaturated nitriles in Titan’s atmosphere Balucani, N.; Asvany, O.; Osamura, Y. Planetary and Space Science, Vol. 48, Issue 5 https://doi.org/10.1016/S0032-0633(00)00018-0	journal	April 2000
Spectroscopic properties of polycyclic aromatic hydrocarbons (PAHs) and astrophysical implications d'Hendecourt, L.; Ehrenfreund, P. Advances in Space Research, Vol. 19, Issue 7 https://doi.org/10.1016/S0273-1177(97)00349-9	journal	January 1997
A novel route for PAH growth in HACA based mechanisms Shukla, Bikau; Koshi, Mitsuo Combustion and Flame, Vol. 159, Issue 12 https://doi.org/10.1016/j.combustflame.2012.08.007	journal	December 2012
Modeling chemical growth processes in Titan's atmosphere 2. Theoretical study of reactions between C2H and ethene, propene, 1-butene, 2-butene, isobutene, trimethylethene, and tetramethylethene Woon, David E.; Park, Jin-Young Icarus, Vol. 202, Issue 2 https://doi.org/10.1016/j.icarus.2009.02.028	journal	August 2009
The Cologne Database for Molecular Spectroscopy, CDMS, in the Virtual Atomic and Molecular Data Centre, VAMDC Endres, Christian P.; Schlemmer, Stephan; Schilke, Peter Journal of Molecular Spectroscopy, Vol. 327 https://doi.org/10.1016/j.jms.2016.03.005	journal	September 2016
Molecular Reaction Dynamics Levine, Raphael D. https://doi.org/10.1017/CBO9780511614125	book	January 2005
Aromatics and Cyclic Molecules in Molecular Clouds: A New Dimension of Interstellar Organic Chemistry McCarthy, Michael C.; McGuire, Brett A. The Journal of Physical Chemistry A, Vol. 125, Issue 16 https://doi.org/10.1021/acs.jpca.1c00129	journal	March 2021
An Aromatic Universe–A Physical Chemistry Perspective Kaiser, Ralf I.; Hansen, Nils The Journal of Physical Chemistry A, Vol. 125, Issue 18 https://doi.org/10.1021/acs.jpca.1c00606	journal	April 2021
A Combined Experimental and Computational Study on the Reaction Dynamics of the 1-Propynyl (CH ₃ CC)–Acetylene (HCCH) System and the Formation of Methyldiacetylene (CH ₃ CCCCH) Thomas, Aaron M.; Zhao, Long; He, Chao The Journal of Physical Chemistry A, Vol. 122, Issue 33 https://doi.org/10.1021/acs.jpca.8b05530	journal	July 2018
Combined Experimental and Computational Study on the Reaction Dynamics of the 1-Propynyl (CH 3 CC)–1,3-Butadiene (CH 2 CHCHCH 2 ) System and the Formation of Toluene under Single Collision Conditions Thomas, Aaron M.; He, Chao; Zhao, Long The Journal of Physical Chemistry A, Vol. 123, Issue 19 https://doi.org/10.1021/acs.jpca.9b00092	journal	April 2019
Elucidating the Chemical Dynamics of the Elementary Reactions of the 1-Propynyl Radical (CH ₃ CC; X ² A ₁ ) with Methylacetylene (H ₃ CCCH; X ¹ A ₁ ) and Allene (H ₂ CCCH ₂ ; X ¹ A ₁ ) He, Chao; Zhao, Long; Thomas, Aaron M. The Journal of Physical Chemistry A, Vol. 123, Issue 26 https://doi.org/10.1021/acs.jpca.9b03746	journal	June 2019
Stereo- and Regioselective Dimerization of Alkynes to Enynes by Bimetallic Syn-Carbopalladation Pfeffer, Camilla; Wannenmacher, Nick; Frey, Wolfgang ACS Catalysis, Vol. 11, Issue 9 https://doi.org/10.1021/acscatal.1c00473	journal	April 2021
Mechanism of neocarzinostatin action: role of DNA microstructure in determination of chemistry of bistranded oxidative damage Goldberg, Irving H. Accounts of Chemical Research, Vol. 24, Issue 7 https://doi.org/10.1021/ar00007a001	journal	July 1991
Reaction Dynamics of Phenyl Radicals in Extreme Environments: A Crossed Molecular Beam Study Gu, Xibin; Kaiser, Ralf I. Accounts of Chemical Research, Vol. 42, Issue 2 https://doi.org/10.1021/ar8001365	journal	February 2009
Experimental Investigation on the Formation of Carbon-Bearing Molecules in the Interstellar Medium via Neutral−Neutral Reactions Kaiser, Ralf I. Chemical Reviews, Vol. 102, Issue 5 https://doi.org/10.1021/cr970004v	journal	May 2002
Prediction of Reaction Barriers and Thermochemical Properties with Explicitly Correlated Coupled-Cluster Methods: A Basis Set Assessment Zhang, Jinmei; Valeev, Edward F. Journal of Chemical Theory and Computation, Vol. 8, Issue 9 https://doi.org/10.1021/ct3005547	journal	August 2012
π-Conjugated Aromatic Enynes as a Single-Emitting Component for White Electroluminescence Liu, Yu; Nishiura, Masayoshi; Wang, Yue Journal of the American Chemical Society, Vol. 128, Issue 17 https://doi.org/10.1021/ja058188f	journal	May 2006
trans-Hydroalkynylation of Internal 1,3-Enynes Enabled by Cooperative Catalysis Wang, Ziyong; Zhang, Chen; Wu, Jason Journal of the American Chemical Society, Vol. 145, Issue 10 https://doi.org/10.1021/jacs.3c00514	journal	March 2023
Novel D3 Selective Dopaminergics Incorporating Enyne Units as Nonaromatic Catechol Bioisosteres: Synthesis, Bioactivity, and Mutagenesis Studies Dörfler, Miriam; Tschammer, Nuska; Hamperl, Katharina Journal of Medicinal Chemistry, Vol. 51, Issue 21 https://doi.org/10.1021/jm800895v	journal	October 2008
Reaction Rate and Isomer-Specific Product Branching Ratios of C ₂ H + C ₄ H ₈ : 1-Butene, cis -2-Butene, trans -2-Butene, and Isobutene at 79 K Bouwman, Jordy; Fournier, Martin; Sims, Ian R. The Journal of Physical Chemistry A, Vol. 117, Issue 24 https://doi.org/10.1021/jp403637t	journal	June 2013
An Experimental and Theoretical Study on the Formation of 2-Methylnaphthalene (C ₁₁ H ₁₀ /C ₁₁ H ₃ D ₇ ) in the Reactions of the Para-Tolyl (C ₇ H ₇ ) and Para-Tolyl-d7 (C ₇ D ₇ ) with Vinylacetylene (C ₄ H ₄ ) Parker, Dorian S. N.; Dangi, Beni B.; Kaiser, Ralf I. The Journal of Physical Chemistry A, Vol. 118, Issue 15 https://doi.org/10.1021/jp501210d	journal	April 2014
Highly π-Extended TTF Analogues with a Conjugated Macrocyclic Enyne Core Chen, Guang; Wang, Li; Thompson, David W. Organic Letters, Vol. 10, Issue 4 https://doi.org/10.1021/ol703038m	journal	January 2008
Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features Kwok, Sun; Zhang, Yong Nature, Vol. 479, Issue 7371 https://doi.org/10.1038/nature10542	journal	October 2011
Molecular mass growth through ring expansion in polycyclic aromatic hydrocarbons via radical–radical reactions Zhao, Long; Kaiser, Ralf. I.; Lu, Wenchao Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-11652-5	journal	August 2019
Low-temperature formation of polycyclic aromatic hydrocarbons in Titan’s atmosphere Zhao, Long; Kaiser, Ralf I.; Xu, Bo Nature Astronomy, Vol. 2, Issue 12 https://doi.org/10.1038/s41550-018-0585-y	journal	October 2018
A Barrierless Pathway Accessing the C9H9 and C9H8 Potential Energy Surfaces via the Elementary Reaction of Benzene with 1-Propynyl Thomas, Aaron M.; Doddipatla, Srinivas; Kaiser, Ralf I. Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-53987-5	journal	November 2019
Chemical complexity in the Horsehead photodissociation region Guzmán, Viviana V.; Pety, Jérôme; Gratier, Pierre Faraday Discuss., Vol. 168 https://doi.org/10.1039/C3FD00114H	journal	January 2014
Molecular weight growth in Titan's atmosphere: branching pathways for the reaction of 1-propynyl radical (H ₃ CCC˙) with small alkenes and alkynes Kirk, Benjamin B.; Savee, John D.; Trevitt, Adam J. Physical Chemistry Chemical Physics, Vol. 17, Issue 32 https://doi.org/10.1039/C5CP02589C	journal	January 2015
A combined crossed molecular beam and theoretical investigation of the reaction of the meta-tolyl radical with vinylacetylene – toward the formation of methylnaphthalenes Yang, Tao; Muzangwa, Lloyd; Kaiser, Ralf I. Physical Chemistry Chemical Physics, Vol. 17, Issue 33 https://doi.org/10.1039/C5CP03285G	journal	January 2015
Transition metal-catalyzed couplings of alkynes to 1,3-enynes: modern methods and synthetic applications Trost, Barry M.; Masters, James T. Chemical Society Reviews, Vol. 45, Issue 8 https://doi.org/10.1039/C5CS00892A	journal	January 2016
A combined experimental and computational study on the reaction dynamics of the 1-propynyl radical (CH ₃ CC; X ² A ₁ ) with ethylene (H ₂ CCH ₂ ; X ¹ A _1g ) and the formation of 1-penten-3-yne (CH ₂ CHCCCH ₃ ; X ¹ A′) He, Chao; Zhao, Long; Thomas, Aaron M. Physical Chemistry Chemical Physics, Vol. 21, Issue 40 https://doi.org/10.1039/C9CP04073K	journal	January 2019
2-Activated 1,3-enynes in enantioselective synthesis Bao, Xiaoze; Ren, Jinhui; Yang, Yang Organic & Biomolecular Chemistry, Vol. 18, Issue 40 https://doi.org/10.1039/D0OB01614D	journal	January 2020
Reaction dynamics of carbon-bearing radicals in circumstellar envelopes of carbon stars Gu, Xibin; Guo, Ying; Zhang, Fangtong Faraday Discussions, Vol. 133 https://doi.org/10.1039/b516457e	journal	January 2006
Long-range corrected hybrid density functionals with damped atom–atom dispersion corrections Chai, Jeng-Da; Head-Gordon, Martin Physical Chemistry Chemical Physics, Vol. 10, Issue 44 https://doi.org/10.1039/b810189b	journal	January 2008
Untangling the chemical evolution of Titan's atmosphere and surface–from homogeneous to heterogeneous chemistry Kaiser, Ralf I.; Maksyutenko, Pavlo; Ennis, Courtney Faraday Discussions, Vol. 147 https://doi.org/10.1039/c003599h	journal	January 2010
On the formation of polyacetylenes and cyanopolyacetylenes in Titan's atmosphere and their role in astrobiology Kaiser, Ralf I.; Mebel, Alexander M. Chemical Society Reviews, Vol. 41, Issue 16 https://doi.org/10.1039/c2cs35068h	journal	January 2012
Propargylimine in the laboratory and in space: millimetre-wave spectroscopy and its first detection in the ISM Bizzocchi, L.; Prudenzano, D.; Rivilla, V. M. Astronomy & Astrophysics, Vol. 640 https://doi.org/10.1051/0004-6361/202038083	journal	August 2020
Pure hydrocarbon cycles in TMC-1: Discovery of ethynyl cyclopropenylidene, cyclopentadiene, and indene Cernicharo, J.; Agúndez, M.; Cabezas, C. Astronomy & Astrophysics, Vol. 649 https://doi.org/10.1051/0004-6361/202141156	journal	May 2021
Discovery of benzyne, o -C ₆ H ₄ , in TMC-1 with the QUIJOTE line survey Cernicharo, J.; Agúndez, M.; Kaiser, R. I. Astronomy & Astrophysics, Vol. 652 https://doi.org/10.1051/0004-6361/202141660	journal	August 2021
Detection of ethynylbenzene in TMC-1 and the interstellar search for 1,2-diethynylbenzene Loru, Donatella; Cabezas, Carlos; Cernicharo, José Astronomy & Astrophysics, Vol. 677 https://doi.org/10.1051/0004-6361/202347023	journal	September 2023
Millimetre and submillimetre spectroscopy of isobutene and its detection in the molecular cloud G+0.693 Fatima, Mariyam; Müller, Holger S. P.; Zingsheim, Oliver Astronomy & Astrophysics, Vol. 680 https://doi.org/10.1051/0004-6361/202347112	journal	December 2023
Scintillation Type Mass Spectrometer Ion Detector Daly, N. R. Review of Scientific Instruments, Vol. 31, Issue 3 https://doi.org/10.1063/1.1716953	journal	March 1960
Design of a modular and versatile interlock system for ultrahigh vacuum machines: A crossed molecular beam setup as a case study Guo, Ying; Gu, Xibin; Kawamura, Ed Review of Scientific Instruments, Vol. 77, Issue 3 https://doi.org/10.1063/1.2173074	journal	March 2006
A simple and efficient CCSD(T)-F12 approximation Adler, Thomas B.; Knizia, Gerald; Werner, Hans-Joachim The Journal of Chemical Physics, Vol. 127, Issue 22 https://doi.org/10.1063/1.2817618	journal	December 2007
Simplified CCSD(T)-F12 methods: Theory and benchmarks Knizia, Gerald; Adler, Thomas B.; Werner, Hans-Joachim The Journal of Chemical Physics, Vol. 130, Issue 5 https://doi.org/10.1063/1.3054300	journal	February 2009
Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen Dunning, Thom H. The Journal of Chemical Physics, Vol. 90, Issue 2 https://doi.org/10.1063/1.456153	journal	January 1989
Formation of benzene in the interstellar medium Jones, B. M.; Zhang, F.; Kaiser, R. I. Proceedings of the National Academy of Sciences, Vol. 108, Issue 2 https://doi.org/10.1073/pnas.1012468108	journal	December 2010
Low temperature formation of naphthalene and its role in the synthesis of PAHs (Polycyclic Aromatic Hydrocarbons) in the interstellar medium Parker, D. S. N.; Zhang, F.; Kim, Y. S. Proceedings of the National Academy of Sciences, Vol. 109, Issue 1 https://doi.org/10.1073/pnas.1113827108	journal	December 2011
A combined experimental and computational study on the reaction dynamics of the 1-propynyl (CH₃CC, X²A₁) – propylene (CH₃CHCH₂, X¹A′) system: formation of 1,3-dimethylvinylacetylene (CH₃CCCHCHCH₃, X¹A′) under single collision conditions Medvedkov, Iakov A.; Nikolayev, Anatoliy A.; He, Chao Molecular Physics https://doi.org/10.1080/00268976.2023.2234509	journal	July 2023
The reactivity of ground-state carbon atoms with unsaturated hydrocarbons in combustion flames and in the interstellar medium Kaiser, Ralf I.; Mebel, Alexander M. International Reviews in Physical Chemistry, Vol. 21, Issue 2 https://doi.org/10.1080/01442350210136602	journal	April 2002
Formation of resonantly stabilised free radicals via the reactions of atomic carbon, dicarbon, and tricarbon with unsaturated hydrocarbons: theory and crossed molecular beams experiments Mebel, Alexander M.; Kaiser, Ralf I. International Reviews in Physical Chemistry, Vol. 34, Issue 4 https://doi.org/10.1080/0144235X.2015.1075280	journal	October 2015
Unusual 3 micron emission features in three proto-planetary nebulae Geballe, T. R.; Tielens, A. G. G. M.; Kwok, S. The Astrophysical Journal, Vol. 387 https://doi.org/10.1086/186312	journal	March 1992
Astrochemistry: From Molecular Clouds to Planetary Systems: IAU Symposium 1971 van Dishoeck, Ewine F. Publications of the Astronomical Society of the Pacific, Vol. 112, Issue 768 https://doi.org/10.1086/316509	journal	February 2000
[ITAL]Infrared Space Observatory's[/ITAL] Discovery of C[TINF]4[/TINF]H[TINF]2[/TINF], C[TINF]6[/TINF]H[TINF]2[/TINF], and Benzene in CRL 618 Cernicharo, José; Heras, Ana M.; Tielens, A. G. G. M. The Astrophysical Journal, Vol. 546, Issue 2 https://doi.org/10.1086/318871	journal	January 2001
A Study of the 3.3 and 3.4 μm Emission Features in Proto–Planetary Nebulae Hrivnak, Bruce J.; Geballe, T. R.; Kwok, Sun The Astrophysical Journal, Vol. 662, Issue 2 https://doi.org/10.1086/518109	journal	June 2007
The Infrared Spectrum of Protonated Naphthalene and its Relevance for the Unidentified Infrared Bands Ricks, Allen M.; Douberly, Gary E.; Duncan, Michael A. The Astrophysical Journal, Vol. 702, Issue 1 https://doi.org/10.1088/0004-637X/702/1/301	journal	August 2009
THE CARRIERS OF THE INTERSTELLAR UNIDENTIFIED INFRARED EMISSION FEATURES: CONSTRAINTS FROM THE INTERSTELLAR C-H STRETCHING FEATURES AT 3.2-3.5 μm Yang, X. J.; Glaser, R.; Li, Aigen The Astrophysical Journal, Vol. 776, Issue 2 https://doi.org/10.1088/0004-637X/776/2/110	journal	October 2013
The Carriers of the Interstellar Unidentified Infrared Emission Features: Aromatic or Aliphatic? Li, Aigen; Draine, B. T. The Astrophysical Journal, Vol. 760, Issue 2 https://doi.org/10.1088/2041-8205/760/2/L35	journal	November 2012
Fullerenes, fulleranes and polycyclic aromatic hydrocarbons in the Allende meteorite Becker, L.; Bunch, T. E. Meteoritics & Planetary Science, Vol. 32, Issue 4 https://doi.org/10.1111/j.1945-5100.1997.tb01292.x	journal	July 1997
Low-temperature gas-phase formation of indene in the interstellar medium Doddipatla, Srinivas; Galimova, Galiya R.; Wei, Hongji Science Advances, Vol. 7, Issue 1 https://doi.org/10.1126/sciadv.abd4044	journal	January 2021
Detection of the aromatic molecule benzonitrile ( c -C ₆ H ₅ CN) in the interstellar medium McGuire, Brett A.; Burkhardt, Andrew M.; Kalenskii, Sergei Science, Vol. 359, Issue 6372 https://doi.org/10.1126/science.aao4890	journal	January 2018
Detection of two interstellar polycyclic aromatic hydrocarbons via spectral matched filtering McGuire, Brett A.; Loomis, Ryan A.; Burkhardt, Andrew M. Science, Vol. 371, Issue 6535 https://doi.org/10.1126/science.abb7535	journal	March 2021
Reaction Dynamics in Astrochemistry: Low-Temperature Pathways to Polycyclic Aromatic Hydrocarbons in the Interstellar Medium Kaiser, Ralf I.; Parker, Dorian S. N.; Mebel, Alexander M. Annual Review of Physical Chemistry, Vol. 66, Issue 1 https://doi.org/10.1146/annurev-physchem-040214-121502	journal	April 2015
Recent advances in the tandem annulation of 1,3-enynes to functionalized pyridine and pyrrole derivatives Liu, Yi; Luo, Puying; Fu, Yang Beilstein Journal of Organic Chemistry, Vol. 17 https://doi.org/10.3762/bjoc.17.163	journal	September 2021
A new Reference Chemical Composition for Tmc-1 Gratier, P.; Majumdar, L.; Ohishi, M. The Astrophysical Journal Supplement Series, Vol. 225, Issue 2 https://doi.org/10.3847/0067-0049/225/2/25	journal	August 2016
Discovery of the Pure Polycyclic Aromatic Hydrocarbon Indene (c-C9H8) with GOTHAM Observations of TMC-1 Burkhardt, Andrew M.; Long Kelvin Lee, Kin; Bryan Changala, P. The Astrophysical Journal Letters, Vol. 913, Issue 2 https://doi.org/10.3847/2041-8213/abfd3a	journal	May 2021
Discovery of Interstellar 2-Cyanoindene (2-C₉H₇CN) in GOTHAM Observations of TMC-1 Sita, Madelyn L.; Changala, P. Bryan; Xue, Ci The Astrophysical Journal Letters, Vol. 938, Issue 2 https://doi.org/10.3847/2041-8213/ac92f4	journal	October 2022

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Journal Article · Sun Jun 09 00:00:00 EDT 2019 · Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory · OSTI ID:1603180

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Elucidating the chemical dynamics of the elementary reactions of the 1-propynyl radical (CH3CC; X2A1) with 2-methylpropene ((CH3)2CCH2; X1A1)

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Elucidating the chemical dynamics of the elementary reactions of the 1-propynyl radical (CH₃CC; X²A₁) with 2-methylpropene ((CH₃)₂CCH₂; X¹A₁)