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Please let us know of any additional parameters that you suspect may not be correct

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Correct Potential Parameters (shown in bold font)
Bond Lengths for Cyclic Alkanes and Ethers
Bond |
r [Å] |
CHx–CHx |
1.54 |
CHx–O |
1.44 |
in:
S.J. Keasler, S.M. Charan, C.D. Wick, I.G. Econonmou, and J.I. Siepmann,
'Transferable potentials for phase equilibria-United atom
description of five- and six-membered cyclic alkanes and ethers,'
J. Phys. Chem. B, 116, 11234-11246 (2012).
Alkane torsion parameter
Torsion |
c0/kB [K] |
c1/kB [K] |
c2/kB [K] |
c3/kB [K] |
CHx–CH2–CH2–CHy |
0 |
355.03 |
-68.19 |
791.32 |
in:
-
M.G. Martin, and J.I. Siepmann,
- 'Novel configurational-bias Monte Carlo method for branched
molecules. Transferable potentials for phase equilibria. 2.
United-atom description of branched alkanes,'
- J. Phys. Chem. B, 103, 4508-4517 (1999).
-
B. Chen, J.J. Potoff, and J.I. Siepmann,
- 'Monte Carlo calculations for alcohols and their mixtures with
alkanes. Transferable potentials for phase equilibria. 5.
United-atom description of primary, secondary and tertiary alcohols,'
- J. Phys. Chem. B, 105, 3093-3104 (2001).
-
J.M. Stubbs, J.J. Potoff, and J.I. Siepmann,
- 'Transferable potentials for phase equilibria. 6. United-atom
description for ethers, glycols, ketones and aldehydes,'
- J. Phys. Chem. B, 108, 17596-17605 (2004).
Alkene and Alkylbenzene Torsional Potential Parameters
Torsion (eq. 5) |
d0/kB [K] |
φ0 [rad] |
CHx–CH=CH–CHy (cis) |
24800 |
π |
CHx–CH=CH–CHy (trans) |
26800 |
0 |
Torsion (eq. 6) |
e0/kB [K] |
e1 [rad] |
CHx(aro)–C(aro)–CH2–CHx |
131 |
π |
CHx(aro)–C(aro)–CH(sp2)–CHx |
167 |
5π/3 |
in:
-
C.D. Wick, M.G. Martin, and J.I. Siepmann,
- 'Transferable potentials for phase equilibria. 4. United-atom
description of linear and branched alkenes and of alkylbenzenes,'
- J. Phys. Chem. B, 104, 8008-8016 (2000).
TraPPE-EH Partial Charges for Aromatic Heterocycles
Molecule |
carbon |
q (e) |
hydrogen |
q (e) |
benzene |
C |
-0.095 |
H |
0.095 |
in:
-
N. Rai, and J.I. Siepmann,
- 'Transferable potentials for phase equilibria. 9. Explicit-hydrogen
description of benzene and 5-membered and 6-membered heterocyclic
aromatic compounds,'
- J. Phys. Chem. B, 111, 10790-10799 (2007).
TraPPE 7. Torsional Potential Equation
eq. 5 |
 |
in:
-
C.D. Wick, J.M. Stubbs, N. Rai, and J.I. Siepmann,
- 'Transferable potentials for phase equilibria. 7. United-atom
description for nitrogen, amines, amides, nitriles, pyridine and
pyrimidine,'
- J. Phys. Chem. B, 109, 18974-18982 (2005).
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