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Experimental data for CH2NOH (formaldoxime)

22 02 02 11 45
Other names
formaldehyde oxime;
INChI INChIKey SMILES IUPAC name
InChI=1S/CH3NO/c1-2-3/h3H,1H2 SQDFHQJTAWCFIB-UHFFFAOYSA-N C=NO
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
1 A' 3650   webbook      
2 A' 3110          
3 A' 2973          
4 A' 1639          
5 A' 1410          
6 A' 1319          
7 A' 1166          
8 A' 893          
9 A' 530          
10 A" 953          
11 A" 774          
12 A" 400          

vibrational zero-point energy: 9408.7 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CH2NOH (formaldoxime).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
2.25750 0.39558 0.33623 1962Lev:276

Calculated rotational constants for CH2NOH (formaldoxime).
Product of moments of inertia moments of inertia
15954.44amu3Å6   7.30549404748594E-116gm3 cm6
Geometric Data
picture of formaldoxime

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
rCH 1.085   1 4 1963Lev:2326
rCH 1.086   1 5 1963Lev:2326
rCN 1.276   1 2 1963Lev:2326
rNO 1.408   2 3 1963Lev:2326
rOH 0.956   3 6 1963Lev:2326
aHCN 121.77 2 1 4 1963Lev:2326
aHCN 115.55 2 1 5 1963Lev:2326
aCNO 110.2 1 2 3 1963Lev:2326

Cartesians
Atom x (Å) y (Å) z (Å)
C1 1.1386 -0.0292 0.0000
N2 0.0000 0.5468 0.0000
O3 -1.0303 -0.4128 0.0000
H4 1.2319 -1.1102 0.0000
H5 1.9988 0.6336 0.0000
H6 -1.8196 0.1267 0.0000

Atom - Atom Distances bond lengths
Distances in Å
  C1 N2 O3 H4 H5 H6
C1   1.27602.20261.08501.08602.9623
N2 1.2760   1.40802.06482.00071.8674
O3 2.20261.4080   2.36733.20480.9560
H4 1.08502.06482.3673   1.90503.2926
H5 1.08602.00073.20481.9050   3.8519
H6 2.96231.86740.95603.29263.8519  

Calculated geometries for CH2NOH (formaldoxime).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
C1 N2 O3 110.200 N2 C1 H4 121.770
N2 C1 H5 115.550 N2 O3 H6 102.680
H4 C1 H5 122.680

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C=N 1
N-O 1
H-C 2
H-O 1

Connectivity
Atom 1 Atom 2
C1 N2
C1 H4
C1 H5
N2 O3
O3 H6
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A'

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
10.110       webbook
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 0.399 0.195 0.000 0.440 1962Lev:276 MW μ0 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 CH2NOH (formaldoxime).
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 CH2NOH (formaldoxime).

References
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squib reference DOI
1962Lev:276 IN Levine "The microwave spectrum of formaldoxime" J. Mol. Spect. 8, 276-284, 1962 10.1016/0022-2852(62)90028-0
1963Lev:2326 IN Levine "Structure of Formaldoxime" J. Chem. Phys. 33(10) 2326, 1963 10.1063/1.1733504
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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