|
|
Summary
longprop
| IUPAC name | 2-methylbuta-1,3-diene | | | | Synonyms | 78-79-5, InChI=1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3, 2-methyl-1,3-butadiene, isoprene, 2-methyl-13-butadiene, 2-methyl-13-butadien | | CAS number | 78-79-5 | | ChemSpider ID | 6309 | | PubChem ID | 6557 | | Molecular weight | 68.1167 Da | | Formula | C5H8 | | Multiplicity | 1 | | Point group | Cs | | Symmetry number | 1 | | Rotatable bonds | 1 | | StdInChi | InChI=1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3 |
Liquid properties
| Property | Unit | T (K) | Experiment | GAFF-ESP-2012 | OPLS | CGenFF | COSMO-RS | kowwin | GAFF-ESP | XlogP3 |
|---|
| ρ | g/l | 298.15 | 675.01 | | | 669.32 | | | | | | ΔHvap | kJ/mol | 298.15 | 26.173 | | | 26.362 | | | | | | log kOW | | 298.15 | 2.424 | | | | | | | 2.505 | | | | 2.426 | | | | | | | | Flexible models Hydrogen constrained All bonds constrained.
Gas properties
| Property | Unit | T (K) | Experiment | G2 | G3 | G4 | CBS-QB3 | W1BD | W1U | B3LYP/aug-cc-pVTZ | BS | CGenFF | GAFF-BCC-2018 | GAFF-ESP-2018 | AXpp | AXpg | AXps |
|---|
| E | kJ/mol | 298.15 | | | | 313.027 | | | | | | 300.688 | | | | | | | E-scaled | kJ/mol | 298.15 | | | | | | | | | | 310.268 | | | | | | | ΔHform | kJ/mol | 0 | | 103.47 | 97.37 | 97.17 | 105.37 | 90.17 | 89.77 | | | | | | | | | | ΔHform | kJ/mol | 298.15 | 75.73 | 81.47 | 75.27 | 75.87 | 84.17 | 68.87 | 68.47 | | | | | | | | | | | | 75.3±1.39 | | | | | | | | | | | | | | | | | | 84.61 | | | | | | | | | | | | | | | | | | 75.510 | | | | | | | | | | | | | | | | | | 75.7±1.011 | | | | | | | | | | | | | | | | ΔGform | kJ/mol | 298.15 | 145.93 | 154.37 | 148.17 | 147.77 | 155.87 | 140.67 | 140.27 | | | | | | | | | | ΔSform | J/mol K | 298.15 | 0.03 | -244.67 | -244.67 | -241.17 | -240.47 | -240.87 | -240.87 | | | | | | | | | | S0 | J/mol K | 298.15 | 0.323 | 306.807 | 306.807 | 310.377 | 311.007 | 310.597 | 310.597 | | | 378.578 | | | | | | | | | 314.961 | | | | | | | | | | | | | | | | S0-scaled | J/mol K | 298.15 | | | | | | | | | | 376.318 | | | | | | | ZPE | kJ/mol | 298.15 | | | | 297.77 | | | | | | 284.08 | | | | | | | ZPE-scaled | kJ/mol | 298.15 | | | | | | | | | | 293.98 | | | | | | | CV | J/mol K | 298.15 | 94.4±1.912 | 81.77 | 81.77 | 88.27 | 88.57 | 88.27 | 88.27 | | | 92.18 | | | | | | | CV-scaled | J/mol K | 298.15 | | | | | | | | | | 89.38 | | | | | | | αaniso | ų | 298.15 | | | | | | | | | | | | | 1.8313 | 1.8313 | 1.8213 |
References
- C. L. Yaws Yaws' Handbook of Thermodynamic Properties for Hydrocarbons and Chemicals, Knovel (2009).
- K. Vanommeslaeghe and E. Hatcher and C. Acharya and S. Kundu and S. Zhong and J. Shim and E. Darian and O. Guvench and P. Lopes and I. Vorobyov and A. D. Mackerell , J. Comput. Chem. 31, 671-690 (2010).
- R. L. Rowley and W. V. Wilding and J. L. Oscarson and Y. Yang and N. F. Giles Data Compilation of Pure Chemical Properties (Design Institute for Physical Properties, American Institute for Chemical Engineering, New York (2012).
- C. L. Yaws Yaws' Handbook of Properties for Environmental and Green Engineering, William Andrew Inc.: Beaumont, Texas (2008).
- T. Cheng and Y. Zhao and X. Li and F. Lin and Y. Xu and X. Zhang and Y. Li and R. Wang and L. Lai Computation of octanol- water partition coefficients by guiding an additive model with knowledge., J. Chem. Inf. Model. 47, 2140-2148 (2007).
- C. L. Yaws Yaws' Handbook of Properties for Aqueous Systems, William Andrew Inc.: Beaumont, Texas (2012).
- Mohammad M. Ghahremanpour and Paul J. van Maaren and David van der Spoel The Alexandria Library: A Quantum-Chemical Database of Molecular Properties for Force Field Development, Sci. Data 5, 180062 (2018). DOI
- David van der Spoel and Mohammad M. Ghahremanpour and Justin Lemkul Small Molecule Thermochemistry: A Tool For Empirical Force Field Development, J. Phys. Chem. A 122, 8982–8988 (2018). DOI
- Viktor N. Staroverov, Gustavo E. Scuseria, Jianmin Tao and John P. Perdew Comparative assessment of a new nonempirical density functional: Molecules and hydrogen-bonded complexes, J. Chem. Phys. 119, 12129 (2003).
- D. R. Lide CRC Handbook of Chemistry and Physics 90th edition, CRC Press: Cleveland, Ohio (2009).
- Knovel Knovel Critical Tables (2nd Edition), Knovel (2008).
- Mohammad M. Ghahremanpour and Paul J. van Maaren and Jonas C. Ditz and Roland Lindh and David van der Spoel Large-Scale Calculations of Gas Phase Thermochemistry: Enthalpy of Formation, Standard Entropy and Heat Capacity, J. Chem. Phys. 145, 114305 (2016). DOI
- Mohammad Mehdi Ghahremanpour and Paul J. van Maaren and Carl Caleman and Geoffrey R. Hutchison and David van der Spoel Polarizable Drude Model with s-type Gaussian or Slater Charge Density for General Molecular Mechanics Force Fields, J. Chem. Theory Comput. 14, 5553-5566 (2018). DOI
|