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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: LSDA/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/CEP-31G
 hartrees
Energy at 0K-22.851172
Energy at 298.15K-22.852598
HF Energy-22.851172
Nuclear repulsion energy17.183961
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at LSDA/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2838 2838 86.27      
2 A1 1654 1654 58.38      
3 A1 1470 1470 10.06      
4 B1 1137 1137 21.00      
5 B2 2918 2918 178.16      
6 B2 1199 1199 3.75      

Unscaled Zero Point Vibrational Energy (zpe) 5607.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5607.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at LSDA/CEP-31G
ABC
9.06913 1.20016 1.05990

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.702
C2 0.000 0.000 -0.553
H3 0.000 0.960 -1.149
H4 0.000 -0.960 -1.149

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.25542.08512.0851
C21.25541.12991.1299
H32.08511.12991.9206
H42.08511.12991.9206

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.797 O1 C2 H4 121.797
H3 C2 H4 116.405
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.082      
2 C -0.278      
3 H 0.180      
4 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.788 2.788
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.839 0.000 0.000
y 0.000 -11.445 0.000
z 0.000 0.000 -12.433
Traceless
 xyz
x 0.100 0.000 0.000
y 0.000 0.691 0.000
z 0.000 0.000 -0.790
Polar
3z2-r2-1.581
x2-y2-0.394
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.090 0.000 0.000
y 0.000 1.778 0.000
z 0.000 0.000 2.778


<r2> (average value of r2) Å2
<r2> 16.102
(<r2>)1/2 4.013