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Experimental data for CHOCH2OH (hydroxy acetaldehyde)

22 02 02 11 45
Other names
Glycolaldehyde; Glycolic aldehyde; Hydroxyacetaldehyde; Acetaldehyde, hydroxy-; Methylol formaldehyde; Monomethylolformaldehyde; Diose; 2-hydroxyacetaldehyde;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H4O2/c3-1-2-4/h1,4H,2H2 WGCNASOHLSPBMP-UHFFFAOYSA-N O=CCO 2-hydroxyacetaldehyde
State Conformation
1A' CS H in
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 CHOCH2OH (hydroxy acetaldehyde).
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 CHOCH2OH (hydroxy acetaldehyde).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of hydroxy acetaldehyde

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 CHOCH2OH (hydroxy acetaldehyde).

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

Connectivity
Atom 1 Atom 2
C1 C2
C1 O3
C1 H6
C1 H7
C2 O4
C2 H8
O3 H5
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 H in True 0.262 2.330   2.340 1973Mar/Mol:259-270 μa = 0.262 ±0.002 D, μb = 2.33 ± 0.01 D, and μtot = 2.34 ± 0.01 D 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 CHOCH2OH (hydroxy acetaldehyde).
Electric quadrupole moment quadrupole An error occurred on the server when processing the URL. Please contact the system administrator.

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State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole