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Experimental data for CH3C(O)OO (acetyl peroxy radical)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H3O3/c1-2(3)5-4/h1H3 ZBQKPDHUDKSCRS-UHFFFAOYSA-N CC(O[O])=O
State Conformation
1A' CS
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
3 A' 1850   2004von/Wil:2048      
4 A' 1427   2004von/Wil:2048      
5 A' 1372   2004von/Wil:2048      
6 A' 1160   2004von/Wil:2048      
7 A' 1106   2004von/Wil:2048      
8 A' 977   2004von/Wil:2048      
9 A' 743   2004von/Wil:2048      
10 A' 545   2004von/Wil:2048      
11 A' 500   2004von/Wil:2048      
12 A' 348   2004von/Wil:2048      
14 A" 1432   2004von/Wil:2048      
15 A" 1033   2004von/Wil:2048      

Calculated vibrational frequencies for CH3C(O)OO (acetyl peroxy radical).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment

Calculated rotational constants for CH3C(O)OO (acetyl peroxy radical).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of acetyl peroxy radical

Point Group Cs


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for CH3C(O)OO (acetyl peroxy radical).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-C 1
H-C 3
C-O 1
C=O 1
O-O 1

Connectivity
Atom 1 Atom 2
C1 C2
C1 H6
C1 H7
C1 H8
C2 O3
C2 O4
O4 O5
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 2   1A'
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A' Cs True           Cs 2 3
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for CH3C(O)OO (acetyl peroxy radical).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A' Cs True       Cs 2 3

Calculated electric quadrupole moments for CH3C(O)OO (acetyl peroxy radical).

References
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squib reference DOI
2004von/Wil:2048 S von Ahsen, H Willner, JS Francisco "Thermal decomposition of peroxy acetyl nitrate CH3C(O)OONO2" J. Chem. Phys. 121(5) 2048-2057, 2004 10.1063/1.1767813

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