Molecule
- Name
- Formaldehyde
- IUPAC name
- Formaldehyde
- Secondary names
- Methylene glycol, Methanal, Methyl aldehyde, Methylene oxide, Formol, Formic aldehyde, H2CO
- InChI
- InChI=1S/CH2O/c1-2/h1H2
- InChI key
- WSFSSNUMVMOOMR-UHFFFAOYSA-N
- CAS number
- 50-00-0
- Comments
- natural $H_2CO$
- Formula
- $H_2CO$
- Chemical formula
- H2CO
- Structural formula
- [CH2]=[O]
- Charge
- 0
- Unpaired electrons
- 0
- Relations
-
- no
- Isotope mixture type
- terrestrial abundance
- Spin type
- equilibrated
- Molar mass
- 30.026 $g/mol$
- State STP
- gas
- Protic
- protic
- Polarity
- polar
- Dipole
- 2.332 $D$
- Molecule symmetry
- C2v
- Case
- nonlinear-polyatomic
- Vibrations number
- 6
- Vibrations
-
Label Mode Bond Symmetry Degeneracy Fundamental frequency Observed frequency Observed frequency Harmonic frequency Activity IR Activity Raman Strength Comments V1 stretching sym. $>C<H_2$ $A_{1}$ no 2782.0 2782.5 active active s Raman: 2781.6 $cm^{-1}$ (gas) V2 stretching $>C=O$ $A_{1}$ no 1746.0 1746.1 active active vs Raman: 1742.3 $cm^{-1}$ (gas) V3 bending sym. in-p (scissoring) $>C<H_2$ $A_{1}$ no 1500.0 1500.1 active active s Raman: 1499.7 $cm^{-1}$ (gas) V4 stretching asym. $>C<H_2$ $B_{1}$ no 2843.0 2843.1 active active vs Raman: 2866 $cm^{-1}$ (gas) V5 bending asym. in-p (rocking) $>C<H_2$ $B_{1}$ no 1249.0 1249.1 active active s V6 bending sym. out-p (wagging) $>C<H_2$ $B_{2}$ no 1167.0 1167.3 active active s - Comments
- Vibrations of the main isotope: $^1H_2^{12}C^{16}O$. Data from NIST Chemistry WebBook
- Publications