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Added the C2H4+O_Klipp2017 kinetic library
The reaction of atomic oxygen with ethylene is a fundamental oxidation step in combustion. Since it involves an intersystem crossing from a triplet surface to a singlet surface it requires special treatment. Data taken from http://dx.doi.org/10.1016/j.proci.2016.06.053
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input/kinetics/libraries/C2H4+O_Klipp2017/dictionary.txt
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C2H4 | ||
1 C u0 p0 c0 {2,D} {3,S} {4,S} | ||
2 C u0 p0 c0 {1,D} {5,S} {6,S} | ||
3 H u0 p0 c0 {1,S} | ||
4 H u0 p0 c0 {1,S} | ||
5 H u0 p0 c0 {2,S} | ||
6 H u0 p0 c0 {2,S} | ||
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O | ||
multiplicity 3 | ||
1 O u2 p2 c0 | ||
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CH3 | ||
multiplicity 2 | ||
1 C u1 p0 c0 {2,S} {3,S} {4,S} | ||
2 H u0 p0 c0 {1,S} | ||
3 H u0 p0 c0 {1,S} | ||
4 H u0 p0 c0 {1,S} | ||
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HCO | ||
multiplicity 2 | ||
1 C u1 p0 c0 {2,S} {3,D} | ||
2 H u0 p0 c0 {1,S} | ||
3 O u0 p2 c0 {1,D} | ||
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CH3CO | ||
multiplicity 2 | ||
1 C u0 p0 c0 {2,S} {4,S} {5,S} {6,S} | ||
2 C u1 p0 c0 {1,S} {3,D} | ||
3 O u0 p2 c0 {2,D} | ||
4 H u0 p0 c0 {1,S} | ||
5 H u0 p0 c0 {1,S} | ||
6 H u0 p0 c0 {1,S} | ||
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H | ||
multiplicity 2 | ||
1 H u1 p0 c0 | ||
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CH2CHO | ||
multiplicity 2 | ||
1 C u1 p0 c0 {2,S} {3,S} {4,S} | ||
2 H u0 p0 c0 {1,S} | ||
3 H u0 p0 c0 {1,S} | ||
4 C u0 p0 c0 {1,S} {5,D} {6,S} | ||
5 O u0 p2 c0 {4,D} | ||
6 H u0 p0 c0 {4,S} | ||
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C2H3 | ||
multiplicity 2 | ||
1 C u1 p0 c0 {2,S} {3,D} | ||
2 H u0 p0 c0 {1,S} | ||
3 C u0 p0 c0 {1,D} {4,S} {5,S} | ||
4 H u0 p0 c0 {3,S} | ||
5 H u0 p0 c0 {3,S} | ||
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OH | ||
multiplicity 2 | ||
1 O u1 p2 c0 {2,S} | ||
2 H u0 p0 c0 {1,S} | ||
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CH2 | ||
multiplicity 3 | ||
1 C u2 p0 c0 {2,S} {3,S} | ||
2 H u0 p0 c0 {1,S} | ||
3 H u0 p0 c0 {1,S} | ||
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CH2O | ||
1 C u0 p0 c0 {2,D} {3,S} {4,S} | ||
2 O u0 p2 c0 {1,D} | ||
3 H u0 p0 c0 {1,S} | ||
4 H u0 p0 c0 {1,S} | ||
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CH2CO | ||
1 C u0 p0 c0 {2,D} {4,S} {5,S} | ||
2 C u0 p0 c0 {1,D} {3,D} | ||
3 O u0 p2 c0 {2,D} | ||
4 H u0 p0 c0 {1,S} | ||
5 H u0 p0 c0 {1,S} | ||
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H2 | ||
1 H u0 p0 c0 {2,S} | ||
2 H u0 p0 c0 {1,S} | ||
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CH4 | ||
1 C u0 p0 c0 {2,S} {3,S} {4,S} {5,S} | ||
2 H u0 p0 c0 {1,S} | ||
3 H u0 p0 c0 {1,S} | ||
4 H u0 p0 c0 {1,S} | ||
5 H u0 p0 c0 {1,S} | ||
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CO | ||
1 C u0 p1 c-1 {2,T} | ||
2 O u0 p1 c+1 {1,T} | ||
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C2H2 | ||
1 C u0 p0 c0 {2,T} {3,S} | ||
2 C u0 p0 c0 {1,T} {4,S} | ||
3 H u0 p0 c0 {1,S} | ||
4 H u0 p0 c0 {2,S} | ||
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H2O | ||
1 O u0 p2 c0 {2,S} {3,S} | ||
2 H u0 p0 c0 {1,S} | ||
3 H u0 p0 c0 {1,S} |
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#!/usr/bin/env python | ||
# encoding: utf-8 | ||
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name = "C2H4+O_Klipp2017" | ||
shortDesc = u"C2H4 + O surface with product branching" | ||
longDesc = u""" | ||
The reaction of atomic oxygen with ethylene is a fundamental oxidation step in combustion. | ||
Decomposition of the initial adduct via spin-allowed reaction channels on the triplet surface competes | ||
with intersystem crossing (ISC) and a set of spin-forbidden reaction channels on the ground-state singlet | ||
surface. This library describes product branching ratios based on the following publication: | ||
X. Li, A.W. Jasper, J. Zádor, J.A. Miller, S.J. Klippenstein, | ||
Theoretical kinetics of O + C2H4, | ||
Proceedings of the Combustion Institute 36 (2017) 219–227 | ||
http://dx.doi.org/10.1016/j.proci.2016.06.053 | ||
Several different methods were used: | ||
CCSDT(Q)/cc-pVDZ//CCSD(T)/cc-pVTZ | ||
For barrierless reactions on the spin allowed surface CASPT2(2e,2o)/cc-pVTZ was used. | ||
For reaction with barriers on the spin allowed surface CCSD(T)/CBS//B2PLYPD3/cc-pVTZ was used. | ||
The total ISC rate was calculated using Landau–Zener statistical theory | ||
non-statistical “prompt” branching in the dynamics immediately following ISC was predicted using | ||
direct classical trajectories and the CASPT2(2e,2o)/cc-pVDZ surface. | ||
Pressure dependence in the product branching fractions and the potential formation of stabilized products were | ||
considered, but results show that rates are pressure-independent (with < 10% variations in the branching fractions) | ||
up to 20 bar at 300 K and up to 200 bar at 1000 K. | ||
Channels which account for less than 1% of the products are given in this library a low rate: 1e7 cm^3/(mol*s) | ||
(reactions 1a, 1b, 1c, 1e, 1f are all in the 1e10-1e13 cm^3/(mol*s) range at the 300-2500 K range) | ||
Library written by alongd | ||
""" | ||
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entry( | ||
index = 1, | ||
label = "C2H4 + O <=> CH3 + HCO", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(3.319e+13,'cm^3/(mol*s)'), n=-1.717, Ea=(2893,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1a""", | ||
) | ||
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entry( | ||
index = 2, | ||
label = "C2H4 + O <=> CH3CO + H", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(5.485e+11,'cm^3/(mol*s)'), n=-0.4843, Ea=(1958,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1b""", | ||
) | ||
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entry( | ||
index = 3, | ||
label = "C2H4 + O <=> CH2CHO + H", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(2.022e+12,'cm^3/(mol*s)'), n=0.9475, Ea=(1724,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1c""", | ||
) | ||
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entry( | ||
index = 4, | ||
label = "C2H4 + O <=> C2H3 + OH", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(1e+7,'cm^3/(mol*s)'), n=0, Ea=(0,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1d""", | ||
) | ||
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entry( | ||
index = 5, | ||
label = "C2H4 + O <=> CH2 + CH2O", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(4.868e+11,'cm^3/(mol*s)'), n=1.991, Ea=(2860,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1e""", | ||
) | ||
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entry( | ||
index = 6, | ||
label = "C2H4 + O <=> CH2CO + H2", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(3.315e+12,'cm^3/(mol*s)'), n=-1.831, Ea=(3180,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1f""", | ||
) | ||
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entry( | ||
index = 7, | ||
label = "C2H4 + O <=> CH4 + CO", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(1e+7,'cm^3/(mol*s)'), n=0, Ea=(0,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1g""", | ||
) | ||
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entry( | ||
index = 8, | ||
label = "C2H4 + O <=> C2H2 + H2O", | ||
degeneracy = 1, | ||
kinetics = Arrhenius(A=(1e+7,'cm^3/(mol*s)'), n=0, Ea=(0,'cal/mol'), T0=(298,'K'), Tmin=(300,'K'), Tmax=(2500,'K')), | ||
longDesc = u"""Reaction 1h""", | ||
) |