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Title: A crossed molecular beams and computational study on the unusual reactivity of banana bonds of cyclopropane (c-C3H6;X1A$$^{'}_{1}$$) through insertion by ground state carbon atoms (C(3Pj))

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI:https://doi.org/10.1039/d2cp03293g· OSTI ID:1978874

The mechanism and chemical dynamics of the reaction of ground electronic state atomic carbon C(3Pj) with cyclopropane c-C3H6 (X1A$$^{'}_{1}$$) have been explored by combining crossed molecular beams experiments with electronic structure calculations of the pertinent triplet C4H6 potential energy surface and statistical computations of product branching ratios under single-collision conditions. The experimental findings suggest that the reaction proceeds via indirect scattering dynamics through triplet C4H6 reaction intermediate(s) leading to C4H5 product(s) plus atomic hydrogen via a tight exit transition state, with the overall reaction exoergicity evaluated as 231 ± 52 kJ mol–1. The calculations indicate that C(3Pj) can easily insert into one of the three equivalent C–C ‘banana’ bonds of cyclopropane overcoming a low barrier of only 2 kJ mol–1 following the formation of a van der Waals reactant complex stabilized by 15 kJ mol–1. The carbon atom insertion into one of the six C–H bonds is also feasible via a slightly higher barrier of 5 kJ mol–1. Here, these results highlight an unusual reactivity of cyclopropane's banana C–C bonds, which behave more like unsaturated C–C bonds with a π-character than saturated σ C–C bonds, which are known to be generally unreactive toward the ground electronic state atomic carbon such as in ethane (C2H6). The statistical theory predicts the overall product branching ratios at the experimental collision energy as 50% for 1-butyn-4-yl, 33% for 1,3-butadien-2-yl, i-C4H5, and 11% for 1,3-butadien-1-yl, n-C4H5, with i-C4H5 (230 kJ mol–1 below the reactants) favored by the C–C insertion providing the best match with the experimentally observed reaction exoergicity. The C(3Pj) + c-C3H6 reaction is predicted to be a source of C4H5 radicals under the conditions where its low entrance barriers can be overcome, such as in planetary atmospheres or in circumstellar envelopes but not in cold molecular clouds. Both i- and n-C4H5 can further react with acetylene eventually producing the first aromatic ring and hence, the reaction of the atomic carbon with c-C3H6 can be considered as an initial step toward the formation of benzene.

Research Organization:
Univ. of Hawaii, Honolulu, HI (United States); Florida International Univ. (FIU), Miami, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-03ER15411; FG02-04ER15570
OSTI ID:
1978874
Alternate ID(s):
OSTI ID: 1887305
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Vol. 24, Issue 37; ISSN 1463-9076
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (83)

Reaction of carbon atoms, C (2p2, 3P) with C2H2, C2H4 and C6H6: Overall rate constant and relative atomic hydrogen production journal January 2001
The Recombination of Propargyl Radicals:  Solving the Master Equation journal August 2001
An experimental and theoretical investigation of the formation of C7H7 isomers in the bimolecular reaction of dicarbon molecules with 1,3-pentadiene journal June 2014
Crossed beam reactions of methylidyne [CH(X 2 Π)] with D2-acetylene [C 2 D 2 (X 1 Σ g + )] and of D1-methylidyne [CD(X 2 Π)] with acetylene [C 2 H 2 (X 1 Σ g + )] journal January 2012
Contribution of triple substitutions to the electron correlation energy in fourth order perturbation theory journal April 1980
Scintillation Type Mass Spectrometer Ion Detector journal March 1960
Theory and modeling in combustion chemistry journal January 1996
Neutral Carbon in the Protoplanetary Nebulae CRL 618 and CRL 2688 journal October 1997
Crossed molecular beam reactive scattering: from simple triatomic to multichannel polyatomic reactions journal January 2006
Understanding the chemical dynamics of the reactions of dicarbon with 1-butyne, 2-butyne, and 1,2-butadiene – toward the formation of resonantly stabilized free radicals journal January 2014
Transition state theory for collision complexes: product translational energy distributions journal January 1972
Introductory Lecture Frontiers of astrochemistry journal January 1998
Atomic Carbon in Southern Hemisphere High‐Latitude Clouds journal April 1997
Reaction of carbon atoms, C (2p2, 3P) with C3H4(allene and methylacetylene), C3H6(propylene) and C4H8(trans-butene): Overall rate constants and atomic hydrogen branching ratios. journal January 2004
Design of a modular and versatile interlock system for ultrahigh vacuum machines: A crossed molecular beam setup as a case study journal March 2006
A simple and efficient CCSD(T)-F12 approximation journal December 2007
A Free-Radical Pathway to Hydrogenated Phenanthrene in Molecular Clouds-Low Temperature Growth of Polycyclic Aromatic Hydrocarbons journal June 2017
A complete look at a multiple pathway reaction: The reaction of O([sup 1]D) with ethane journal January 2001
A crossed beam and ab initio study of the C2(X1Σg+ /a3∏u)+C2H2(X1Σg+) reactions journal November 2003
A combined crossed molecular beam and ab initio investigation of C2 and C3 elementary reactions with unsaturated hydrocarbons—pathways to hydrogen deficient hydrocarbon radicals in combustion flames journal September 2001
The molecular universe journal April 2002
Crossed‐beam reaction of C( 3 P j ) with C 2 H 2 ( 1+ g ): Observation of tricarbon‐hydride C 3 H journal December 1995
Formation of the Phenyl Radical [C 6 H 5 (X 2 A 1 )] under Single Collision Conditions: A Crossed Molecular Beam and ab Initio Study journal March 2010
Experimental and theoretical investigations of the O([sup 1]D) reaction with cyclopropane journal January 2002
Dynamics of the C+C2H2 reaction from differential and integral cross-section measurements in crossed-beam experiments journal April 2002
A Combined Crossed Molecular Beam and ab Initio Study of the Reactions C 2 (X 1g + , a 3 Π u ) + C 2 H 4n -C 4 H 3 (X 2 A‘) + H( 2 S 1/2 ) journal November 2001
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 ) journal June 2019
Chemistry and the carbon arc journal March 1973
Endoergic reactions of hyperthermal C(3P) with methane and acetylene journal May 1998
Experimental Investigation on the Formation of Carbon-Bearing Molecules in the Interstellar Medium via Neutral−Neutral Reactions journal May 2002
Exchange reactions of alkali atoms with alkali halides: a collision complex mechanism journal January 1967
On the formation of ethynylbiphenyl (C14D5H5; C6D5C6H4CCH) isomers in the reaction of D5-phenyl radicals (C6D5; X2A1) with phenylacetylene (C6H5C2H; X1A1) under single collision conditions journal March 2014
Combined crossed molecular beams and ab initio investigation of the formation of carbon-bearing molecules in the interstellar medium via neutral–neutral reactions journal January 1998
Formation of resonantly stabilised free radicals via the reactions of atomic carbon, dicarbon, and tricarbon with unsaturated hydrocarbons: theory and crossed molecular beams experiments journal October 2015
Detailed kinetic modeling of soot formation in shock-tube pyrolysis of acetylene journal January 1985
Kinetic and thermodynamic issues in the formation of aromatic compounds in flames of aliphatic fuels journal October 1992
A kinetic model for the formation of aromatic hydrocarbons in premixed laminar flames journal January 1998
Combined Experimental and Computational Investigation of the Elementary Reaction of Ground State Atomic Carbon (C; 3 P j ) with Pyridine (C 5 H 5 N; X 1 A 1 ) via Ring Expansion and Ring Degradation Pathways journal March 2018
Atomic Carbon in the Envelope of IRC +10216 journal September 1993
Atomic Carbon Emission from Individual Molecular Clouds in M33 journal September 1997
Modeling of the chemical complexities of flames journal January 1998
Carbon in the Diffuse Interstellar Medium journal June 1997
Characteristics and diagnostics of an ultrahigh vacuum compatible laser ablation source for crossed molecular beam experiments journal May 2006
Crossed‐beam reaction of carbon atoms with hydrocarbon molecules. II. Chemical dynamics of n ‐C 4 H 3 formation from reaction of C( 3 P j ) with methylacetylene, CH 3 CCH ( X 1 A 1 ) journal November 1996
Effect of fuel structure on pathways to soot journal January 1988
A crossed beams study of the reaction of carbon atoms, C(3Pj), with vinyl cyanide, C2H3CN(X1A′)—investigating the formation of cyano propargyl radicals journal January 2006
Atomic Carbon in the Circumstellar Envelopes of Evolved Stars journal October 1998
Simplified CCSD(T)-F12 methods: Theory and benchmarks journal February 2009
Modeling of Aromatic and Polycyclic Aromatic Hydrocarbon Formation in Premixed Methane and Ethane Flames journal August 1996
Concluding Remarks journal November 2001
Formation of benzene in the interstellar medium journal December 2010
Ab Initio/RRKM Study of the Potential Energy Surface of Triplet Ethylene and Product Branching Ratios of the C( 3 P) + CH 4 Reaction journal March 2003
Flash Photolysis of Carbon Suboxide: Absolute Rate Constants for Reactions of C(FormulaP) and C(Formula) with HFormula, NFormula, CO, NO, OFormula and CHFormula journal September 1969
Density‐functional thermochemistry. II. The effect of the Perdew–Wang generalized‐gradient correlation correction journal December 1992
Reaction mechanism of soot formation in flames journal February 2002
Gas-Phase Study of the Elementary Reaction of the D1-Ethynyl Radical (C2D; X2Σ+) with Propylene (C3H6; X1A′) under Single-Collision Conditions journal March 2022
Investigating the Chemical Dynamics of the Reaction of Ground-State Carbon Atoms with Acetylene and Its Isotopomers journal April 2007
Gas-phase synthesis of benzene via the propargyl radical self-reaction journal May 2021
Crossed-beam studies on the dynamics of the C + C2H2 interstellar reaction leading to linear and cyclic C3H + H and C3 + H2 journal January 2006
An Ab Initio Investigation of Reactions of Carbon Atoms, C( 3 P j ), with C 2 H 4 and C 3 H 6 in the Interstellar Medium journal November 2001
An ab Initio/RRKM Study of Product Branching Ratios in the Photodissociation of Buta-1,2- and -1,3-dienes and But-2-yne at 193 nm journal February 2003
The reactivity of ground-state carbon atoms with unsaturated hydrocarbons in combustion flames and in the interstellar medium journal April 2002
A crossed beam investigation of the reactions of tricarbon molecules, <mml:math altimg="si6.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:msub><mml:mrow><mml:mtext>C</mml:mtext></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:msup><mml:mrow><mml:mtext>X</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">Σ</mml:mi></mml:mrow><mml:mrow><mml:mtext>g</mml:mtext></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>, with acetylene, <mml:math altimg="si7.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:msub><mml:mrow><mml:mtext>C</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>H</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:msup><mml:mrow><mml:mtext>X</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">Σ</mml:mi></mml:mrow><mml:mrow><mml:mtext>g</mml:mtext></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>, ethylene, <mml:math altimg="si8.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:msub><mml:mrow><mml:mtext>C</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>H</mml:mtext></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:msup><mml:mrow><mml:mtext>X</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup><mml:msub><mml:mrow><mml:mtext>A</mml:mtext></mml:mrow><mml:mrow><mml:mtext>g</mml:mtext></mml:mrow></mml:msub><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>, and benzene, <mml:math altimg="si9.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:msub><mml:mrow><mml:mtext>C</mml:mtext></mml:mrow><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>H</mml:mtext></mml:mrow><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:msup><mml:mrow><mml:mtext>X</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup><mml:msub><mml:mrow><mml:mtext>A</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mtext>g</mml:mtext></mml:mrow></mml:msub><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math> journal November 2007
O(1D) reaction with cyclopropane: Evidence of O atom insertion into the C–C bond journal July 2001
Formation of polycyclic aromatic hydrocarbons and their growth to soot—a review of chemical reaction pathways journal August 2000
Neutral‐Neutral Reactions in the Interstellar Medium. I. Formation of Carbon Hydride Radicals via Reaction of Carbon Atoms with Unsaturated Hydrocarbons journal March 1997
Theoretical Study on the Mechanism of the Dissociation of Benzene. The C 5 H 3 + CH 3 Product Channel journal September 1997
The Recombination of Propargyl Radicals and Other Reactions on a C 6 H 6 Potential journal October 2003
A high‐intensity multi‐purpose piezoelectric pulsed molecular beam source journal April 1989
Modeling the rich combustion of aliphatic hydrocarbons journal March 2000
A Crossed Molecular Beam Study of the O(1D) + C3H8 Reaction:  Multiple Reaction Pathways journal December 2000
Unraveling the Formation of HCPH(X2A‘) Molecules in Extraterrestrial Environments:  Crossed Molecular Beam Study of the Reaction of Carbon Atoms, C(3Pj), with Phosphine, PH3(XA1) journal April 2007
Reactions of atomic carbon C(23 P J ) by kinetic absorption spectroscopy in the vacuum ultra-violet journal January 1971
Experimental and modeling investigation of aromatic and polycyclic aromatic hydrocarbon formation in a premixed ethylene flame journal January 1996
A chemical dynamics study of the reaction of the methylidyne radical (CH, X2Π) with dimethylacetylene (CH3CCCH3, X1A1g) journal January 2022
Crossed‐beam reaction of carbon atoms with hydrocarbon molecules. I. Chemical dynamics of the propargyl radical formation, C 3 H 3 ( X 2 B 2 ), from reaction of C( 3 P j ) with ethylene, C 2 H 4 ( X 1 A g ) journal November 1996
Crossed-beam reaction of carbon atoms with hydrocarbon molecules. IV. Chemical dynamics of methylpropargyl radical formation, C 4 H 5 , from reaction of C ( 3 P j ) with propylene, C 3 H 6 (X  1 A) journal March 1997
Prediction of Reaction Barriers and Thermochemical Properties with Explicitly Correlated Coupled-Cluster Methods: A Basis Set Assessment journal August 2012
A Combined Experimental and Theoretical Study on the Formation of Interstellar C3H Isomers journal November 1996
Reactions of Hyperthermal C(3P) Generated by Laser Ablation with H2, HCl, HBr, and CH3OH journal October 1995
Chemical dynamics of cyclopropynylidyne (c-C[sub 3]H; X[sup 2]B[sub 2]) formation from the reaction of C([sup 1]D) with acetylene, C[sub 2]H[sub 2](X [sup 1]Σ[sub g][sup +]) journal January 2001
Chemical dynamics of d1-methyldiacetylene (CH3CCCCD; X 1A1) and d1-ethynylallene (H2CCCH(C2D); X 1A′) formation from reaction of C2D(X 2Σ+) with methylacetylene, CH3CCH(X 1A1) journal February 2001
A high‐intensity, pulsed supersonic carbon source with C( 3 P j ) kinetic energies of 0.08–0.7 eV for crossed beam experiments journal December 1995

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