Sulfur dioxide | SSHADE

Molecule

Name: Sulfur dioxide

Name and identifiers

IUPAC name: (32S,16O2)Sulfur dioxide
Secondary names: Sulfurous anhydride, Sulfurous oxide, Sulfur oxide, Sulphur dioxide, Sulfurous acid anhydride, SO2
InChI: InChI=1S/O2S/c1-3-2/i1+0,2+0,3+0
InChI key: RAHZWNYVWXNFOC-SXRZRGFPSA-N
Comments: $^{32}S^{16}O_2$ isotope

Structure and atomic composition

Formula: $^{32}S^{16}O_2$
Chemical formula: SO2
Isotopic formula: [32]S[16]O2
Structural formula: [16O]=[32S]=[16O]
Charge: 0
Unpaired electrons: 0

	Atom	Name	Number
	$^{32}S$	Sulfur	1
	$^{16}O$	Oxygen	2

Relations

no

Isotopic composition

Isotope mixture type: pure isotope

Nuclear spin isomers

Spin type: unique
Spin quantum numbers: 0

Molar mass: 63.9619 $g/mol$
State STP: gas
Protic: aprotic
Polarity: polar
Dipole: 1.63305 $D$

Fundamental vibration modes

Molecule symmetry

C2v

Case

nonlinear-triatomic

Vibrations number

3

Vibrations

Label	Mode	Bond	Symmetry	Degeneracy	Fundamental frequency	Observed frequency	Observed frequency	Harmonic frequency	Activity IR	Activity Raman	Strength	Comments
V1	stretching sym.	$^{32}S^{16}O_2$	$A_{1}$	no	1151.0	1151.4			active	active	s	Raman: 1150.5 $cm^{-1}$ (s)
V2	bending	$^{32}S^{16}O_2$	$A_{1}$	no	518.0	517.7			active	active	s	Raman: 524.5 $cm^{-1}$ (liq, w)
V3	stretching asym.	$^{32}S^{16}O_2$	$B_{1}$	no	1362.0	1361.8			active	active	s	Raman: 1336 $cm^{-1}$ (liq, w)

Comments

Data from NIST Chemistry WebBook

Publications

Shimanouchi, 1972, Natl. Bur. Stand., 39, 1 - 160

Chemical functions and bonds

Chemical bonds

	Bond	Number
	$=^{32}S=^{16}O$	2