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Experimental data for CH3OO- (methylperoxy anion)

22 02 02 11 45
Other names
peroxymethyl; methylperoxy;
INChI INChIKey SMILES IUPAC name
InChI=1S/CH3O2/c1-3-2/h1H3 WTFNSXYULBQCQV-UHFFFAOYSA-N CO[O]
State Conformation
2A" 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
1 A' 3033   webbook      
2 A' 2954          
3 A' 1453          
4 A' 1408          
5 A' 1183          
6 A' 1117          
7 A' 902          
8 A' 482          
9 A" 3020          
10 A" 1441          
12 A" 170          

Calculated vibrational frequencies for CH3OO- (methylperoxy anion).
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 CH3OO- (methylperoxy anion).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of methylperoxy anion

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 CH3OO- (methylperoxy anion).

Bond descriptions


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

Connectivity
Atom 1 Atom 2
C1 O2
C1 H4
C1 H5
C1 H6
O2 O3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   2A"

Electron Affinity (eV)
Electron Affinity unc. reference
1.161 0.005 2002Rie/Tsc:231
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 2A" 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 CH3OO- (methylperoxy anion).
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 2A" Cs True       Cs 2 3

Calculated electric quadrupole moments for CH3OO- (methylperoxy anion).

References
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squib reference DOI
2002Rie/Tsc:231 JC Rienstra-Kiracofe, GS Tschumper, HF Schaefer III, S Nandi, GB Ellison "Atomic and Molecular Electron Affinities: Photoelectron Experiments and Theoretical Computations" Chemical Reviews 2002, 102, 231-282 10.1021/cr990044u
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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