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Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology |
| You are here: Experimental > One molecule all properties | |
| Other names |
|---|
| Thioformaldehyde; methanethial; |
| INChI | INChIKey | SMILES | IUPAC name |
|---|---|---|---|
| InChI=1S/CH2S/c1-2/h1H2 | DBTDEFJAFBUGPP-UHFFFAOYSA-N | C=S | methanethial |
| State | Conformation |
|---|---|
| 1A1 | C2V |
| Property | Value | Uncertainty | units | Reference | Comment |
|---|---|---|---|---|---|
Hfg(298.15K) ![]() |
114.70 | 8.00 | kJ mol-1 | 1993RUS/BER:2568 | estimate Hfg using HH of 10.22 |
Hfg(0K) ![]() |
118.41 | 8.00 | kJ mol-1 | 1993RUS/BER:2568 | estimate Hfg using HH of 10.22 |
Entropy (298.15K) ![]() |
J K-1 mol-1 | ||||
Integrated Heat Capacity (0 to 298.15K) ![]() |
kJ mol-1 |
| Mode Number | Symmetry | Frequency | Intensity | Comment | Description | ||||
|---|---|---|---|---|---|---|---|---|---|
| Fundamental(cm-1) | Harmonic(cm-1) | Reference | (km mol-1) | unc. | Reference | ||||
| 1 | A1 | 2971 | VEEL5 | CH2 s-stretch | |||||
| 2 | A1 | 1456 | VEEL5 | CH2 sciss | |||||
| 3 | A1 | 1059 | VEEL5 | CS stretch | |||||
| 4 | B1 | 990 | VEEL5 | OPLA | |||||
| 5 | B2 | 3025 | VEEL5 | CH2 a-stretch | |||||
| 6 | B2 | 991 | VEEL5 | CH2 rock | |||||
| A | B | C | reference | comment |
|---|---|---|---|---|
| 9.72718 | 0.59040 | 0.55544 | 1994Clo/Hua:7300 |
Product of moments of inertia ![]() | ||||
|---|---|---|---|---|
| 1501.821 | amu3Å6 | 6.87679483683838E-117 | gm3 cm6 | |
Point Group C2v
| Description | Value | unc. | Connectivity | Reference | Comment | |||
|---|---|---|---|---|---|---|---|---|
| Atom 1 | Atom 2 | Atom 3 | Atom 4 | |||||
| rCS | 1.611 | 1 | 2 | 1998Kuc | rs values | |||
| rCH | 1.087 | 2 | 3 | 1998Kuc | ||||
| aHCH | 116.52 | 3 | 2 | 4 | 1998Kuc | |||
| aHCS | 121.74 | 1 | 2 | 3 | 1998Kuc | by symmetry | ||
| Atom | x (Å) | y (Å) | z (Å) |
|---|---|---|---|
| S1 | 0.0000 | 0.0000 | 0.5846 |
| C2 | 0.0000 | 0.0000 | -1.0262 |
| H3 | 0.0000 | 0.9244 | -1.5980 |
| H4 | 0.0000 | -0.9244 | -1.5980 |
| S1 | C2 | H3 | H4 | |
|---|---|---|---|---|
| S1 | 1.6108 | 2.3702 | 2.3702 | |
| C2 | 1.6108 | 1.0869 | 1.0869 | |
| H3 | 2.3702 | 1.0869 | 1.8487 | |
| H4 | 2.3702 | 1.0869 | 1.8487 |
Experimental Bond Angles (degrees) from cartesians
| atom1 | atom2 | atom3 | angle | atom1 | atom2 | atom3 | angle | |
|---|---|---|---|---|---|---|---|---|
| S1 | C2 | H3 | 121.740 | S1 | C2 | H4 | 121.740 | |
| H3 | C2 | H4 | 116.520 |
Bond descriptions
| Bond Type | Count |
|---|---|
| H-C | 2 |
| C=S | 1 |
| Atom 1 | Atom 2 |
|---|---|
| S1 | C2 |
| C2 | H3 |
| C2 | H4 |
| Energy (cm-1) | Degeneracy | reference | description |
|---|---|---|---|
| 0 | 1 | 1A1 |
| Ionization Energy | I.E. unc. | vertical I.E. | v.I.E. unc. | reference |
|---|---|---|---|---|
| 9.376 | 0.003 | 9.380 | webbook |
| Electron Affinity | unc. | reference |
|---|---|---|
| 0.465 | 0.023 | webbook |
| Proton Affinity | unc. | Product | reference | comment |
|---|---|---|---|---|
| 759.7 | H2CSH+ | webbook |
| State | Config | State description | Conf description | Exp. min. | Dipole (Debye) | Reference | comment | Point Group | Components | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| x | y | z | total | dipole | quadrupole | ||||||||
| 1 | 1 | 1A1 | C2v | True | -1.647 | 1.647 | 1974Hel/Hel(II/6) | ± 0.0014 | C2v | 1 | 2 | ||
| State | Config | State description | Conf description | Exp. min. | Quadrupole (D Å) | Reference | comment | Point Group | Components | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| xx | yy | zz | dipole | quadrupole | ||||||||
| 1 | 1 | 1A1 | C2v | True | C2v | 1 | 2 | |||||
| squib | reference | DOI |
|---|---|---|
| 1974Hel/Hel(II/6) | Hellwege, KH and AM Hellwege (eds.). Landolt-Bornstein: Group II: Volume 6 Molecular Constants from Microwave, Molecular Beam, and Electron Spin Resonance Spectroscopy Springer-Verlag. Berlin. 1974. | 10.1007/b19951 |
| 1993RUS/BER:2568 | B. Ruscic, J. Berkowitz,"Photoionization mass spectrometry of CH2S and HCS" J. Chem. Phys. 98, 2568 (1993) | 10.1063/1.464139 |
| 1994Clo/Hua:7300 | Clouthier, D.; Huang, G.; Adam, A.G.; Merer, A.J. "Sub-Doppler spectroscopy of thioformaldehyde: Excited state perturbations and evidence for rotation-induced vibrational mixing in the ground state." Journal of Chemical Physics. 101, 7300-7310 (1994) | 10.1063/1.468287 |
| 1998Kuc | K Kuchitsu(ed) "Structure of Free Polyatomic Molecules - Basic Data" Springer, Berlin, 1998 | 10.1007/978-3-642-45748-7 |
| VEEL5 | M.E. Jacox, Vibrational and Electronic Energy Levels of Polyatomic Transient Molecules, J. Phys. Chem.Ref. Data, Monograph 3 (1994) (updated data in NIST Chemistry Webbook - http://webbook.nist.gov/chemistry/ | |
| webbook | NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) | 10.18434/T4D303 |
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