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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 |
|---|
| Amid kyseliny mravenci; Formimidic acid; formamide; Methanamide; Carbamaldehyde; |
| INChI | INChIKey | SMILES | IUPAC name |
|---|---|---|---|
| InChI=1S/CH3NO/c2-1-3/h1H,(H2,2,3) | ZHNUHDYFZUAESO-UHFFFAOYSA-N | NC=O | formamide |
| InChI=1/CH3NO/c2-1-3/h1H,(H2,2,3)/f/h2H2 | ZHNUHDYFZUAESO-RZDQGJFANA-N | NC=O | formamide |
| State | Conformation |
|---|---|
| 1A' | Planar |
| Property | Value | Uncertainty | units | Reference | Comment |
|---|---|---|---|---|---|
Hfg(298.15K) ![]() |
-186.00 | kJ mol-1 | webbook | ||
Hfg(0K) ![]() |
kJ mol-1 | webbook | |||
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 | A' | 3564 | 1983Sug/Ham:1045 | ||||||
| 2 | A' | 3439 | |||||||
| 3 | A' | 2854 | |||||||
| 4 | A' | 1754 | |||||||
| 5 | A' | 1577 | |||||||
| 6 | A' | 1390 | |||||||
| 7 | A' | 1258 | |||||||
| 8 | A' | 1046 | |||||||
| 9 | A' | 581 | |||||||
| 10 | A" | 1021 | |||||||
| 11 | A" | 603 | |||||||
| 12 | A" | 289 | |||||||
| A | B | C | reference | comment |
|---|---|---|---|---|
| 2.42556 | 0.37939 | 0.32802 | 1974Hir/Sug:251 |
Product of moments of inertia ![]() | ||||
|---|---|---|---|---|
| 15870.78 | amu3Å6 | 7.26718584902227E-116 | gm3 cm6 | |
Point Group Cs
| Description | Value | unc. | Connectivity | Reference | Comment | |||
|---|---|---|---|---|---|---|---|---|
| Atom 1 | Atom 2 | Atom 3 | Atom 4 | |||||
| rCN | 1.350 | 1 | 3 | 1974Hir/Sug:251 | ||||
| rNH | 1.001 | 3 | 6 | 1974Hir/Sug:251 | cis | |||
| rNH | 1.001 | 3 | 5 | 1974Hir/Sug:251 | trans | |||
| rCO | 1.210 | 1 | 2 | 1974Hir/Sug:251 | ||||
| rCH | 1.090 | 1 | 4 | 1974Hir/Sug:251 | ||||
| aHNH | 121.6 | 5 | 3 | 6 | 1974Hir/Sug:251 | |||
| aHNC | 118.5 | 1 | 3 | 6 | 1974Hir/Sug:251 | cis H | ||
| aHNC | 120 | 1 | 3 | 5 | 1974Hir/Sug:251 | trans | ||
| aNCO | 124.7 | 2 | 1 | 3 | 1974Hir/Sug:251 | |||
| aHCN | 112.7 | 3 | 1 | 4 | 1974Hir/Sug:251 | |||
| aHCO | 122.5 | 2 | 1 | 4 | 1974Hir/Sug:251 | |||
| Atom | x (Å) | y (Å) | z (Å) |
|---|---|---|---|
| C1 | 0.0000 | 0.4165 | 0.0000 |
| O2 | 1.1942 | 0.2217 | 0.0000 |
| N3 | -0.9373 | -0.5551 | 0.0000 |
| H4 | -0.4299 | 1.4182 | 0.0000 |
| H5 | -0.6608 | -1.5171 | 0.0000 |
| H6 | -1.9020 | -0.2881 | 0.0000 |
| C1 | O2 | N3 | H4 | H5 | H6 | |
|---|---|---|---|---|---|---|
| C1 | 1.2100 | 1.3500 | 1.0900 | 2.0435 | 2.0283 | |
| O2 | 1.2100 | 2.2686 | 2.0173 | 2.5425 | 3.1379 | |
| N3 | 1.3500 | 2.2686 | 2.0374 | 1.0010 | 1.0010 | |
| H4 | 1.0900 | 2.0173 | 2.0374 | 2.9444 | 2.2535 | |
| H5 | 2.0435 | 2.5425 | 1.0010 | 2.9444 | 1.7467 | |
| H6 | 2.0283 | 3.1379 | 1.0010 | 2.2535 | 1.7467 |
Experimental Bond Angles (degrees) from cartesians
| atom1 | atom2 | atom3 | angle | atom1 | atom2 | atom3 | angle | |
|---|---|---|---|---|---|---|---|---|
| C1 | N3 | H5 | 120.000 | C1 | N3 | H6 | 118.500 | |
| O2 | C1 | N3 | 124.700 | O2 | C1 | H4 | 122.500 | |
| N3 | C1 | H4 | 112.800 | H5 | N3 | H6 | 121.500 |
Bond descriptions
| Bond Type | Count |
|---|---|
| C-N | 1 |
| H-N | 2 |
| C=O | 1 |
| H-C | 1 |
| Atom 1 | Atom 2 |
|---|---|
| C1 | O2 |
| C1 | N3 |
| C1 | H4 |
| N3 | H5 |
| N3 | H6 |
| Energy (cm-1) | Degeneracy | reference | description |
|---|---|---|---|
| 0 | 1 | 1A' |
| Ionization Energy | I.E. unc. | vertical I.E. | v.I.E. unc. | reference |
|---|---|---|---|---|
| 10.160 | 0.060 | webbook |
| Electron Affinity | unc. | reference |
|---|---|---|
| 0.017 | webbook |
| Proton Affinity | unc. | Product | reference | comment |
|---|---|---|---|---|
| 822.2 | NH2CHOH+ | webbook |
| State | Config | State description | Conf description | Exp. min. | Dipole (Debye) | Reference | comment | Point Group | Components | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| x | y | z | total | dipole | quadrupole | ||||||||
| 1 | 1 | 1A' | Planar | True | 3.730 | NSRDS-NBS10 | MW | Cs | 2 | 3 | |||
| 1 | 2 | 1A | Non-Planar | False | C1 | 3 | 5 | ||||||
| State | Config | State description | Conf description | Exp. min. | Quadrupole (D Å) | Reference | comment | Point Group | Components | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| xx | yy | zz | dipole | quadrupole | ||||||||
| 1 | 1 | 1A' | Planar | True | -0.300 | 3.400 | -3.100 | 1971Fly/Ben:225 | Qxx=3.4+-0.4, Qyy=-0.3+-0.5, Qzz=-3.1+-0.8 | Cs | 2 | 3 |
| 1 | 2 | 1A | Non-Planar | False | C1 | 3 | 5 | |||||
| alpha | unc. | Reference |
|---|---|---|
| 4.080 | 1998Gus/Rui:163 |
| squib | reference | DOI |
|---|---|---|
| 1971Fly/Ben:225 | WH Flygare, RC Benson "The molecular Zeeman effect in diamagnetic molecules and the determination of molecular magnetic moments (g values), magnetic susceptibilities, and molecular quadrupole moments" Mol. Phys. 1971, 20 (2), 225-250 | 10.1080/00268977100100221 |
| 1974Hir/Sug:251 | E Hirota, R Sugisaki "Molecular Structure and Internal Motion of Formamide from Microwave Spectrum" J. Mol. Spec. 49, 251, 1974 | 10.1016/0022-2852(74)90274-4 |
| 1983Sug/Ham:1045 | Y Sugawara, Y Hamada, M Tsuboi, " Vibration-Rotation Spectra of Formamides" Bull. Chem. Soc. Jpn. 56, 1045, 1983 | 10.1246/bcsj.56.1045 |
| 1998Gus/Rui:163 | M Gussoni, R Rui, G Zerbi "Electronic and relaxation contribution to linear molecular polarizability. An analysis of the experimental values" J. Mol. Struct. 447 (1998) 163-215 | 10.1016/S0022-2860(97)00292-5 |
| NSRDS-NBS10 | R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 | 10.6028/NBS.NSRDS.10 |
| webbook | NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) | 10.18434/T4D303 |
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