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Experimental data for CHOCOOH (oxo acetic acid)

22 02 02 11 45
Other names
Glyoxylic acid; α-Ketoacetic acid; Formic acid, formyl-; Formylformic acid; Glyoxalic acid; Oxalaldehydic acid; Oxoacetic acid; Oxoethanoic acid; Acetic acid, oxo-; 2-oxoacetic acid;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H2O3/c3-1-2(4)5/h1H,(H,4,5) HHLFWLYXYJOTON-UHFFFAOYSA-N O=CC(O)=O 2-oxoacetic acid
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

Calculated vibrational frequencies for CHOCOOH (oxo acetic acid).
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 CHOCOOH (oxo acetic acid).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of oxo acetic acid

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 CHOCOOH (oxo acetic acid).

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
C=O 2
C-O 1
H-C 1
H-O 1

Connectivity
Atom 1 Atom 2
C1 C2
C1 O3
C1 H6
C2 O4
C2 O5
O5 H7
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   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 CHOCOOH (oxo acetic acid).
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 CHOCOOH (oxo acetic acid).

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