Molecule
- Name
- Oxygen
- IUPAC name
- Dioxygen
- Secondary names
- Dioxygen, Molecular oxygen, Oxygen molecule, triplet oxygen, O2
- InChI
- InChI=1S/O2/c1-2
- InChI key
- MYMOFIZGZYHOMD-UHFFFAOYSA-N
- CAS number
- 7782-44-7
- Comments
- natural $O_2$ - Paramagnetic
- Formula
- $O_2$
- Chemical formula
- O2
- Structural formula
- [O]=[O]
- Charge
- 0
- Unpaired electrons
- 2
- Isotope mixture type
- terrestrial abundance
- Spin type
- unique
- Spin quantum numbers
- 0
- Molar mass
- 31.9988 $g/mol$
- State STP
- gas
- State NTP
- gas
- Protic
- aprotic
- Polarity
- nonpolar
- Dipole
- 0.0 $D$
- Molecule symmetry
- Dinfh
- Case
- diatomic
- Vibrations number
- 1
- Vibrations
-
Label Mode Bond Symmetry Degeneracy Fundamental frequency Observed frequency Observed frequency Harmonic frequency Activity IR Activity Raman Strength Comments V1 stretching $O=O$ no 1556.4 1580.2 inactive active ia Vibrations of the main isotope: $^{16}O_2$. IR intensity is vvw - Comments
- Data from VPL database and NIST Chemistry WebBook