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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-113.915539
Energy at 298.15K-113.917003
HF Energy-113.915539
Nuclear repulsion energy31.913339
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 HF/daug-cc-pVTZ
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 3087 2792 66.02 148.55 0.11 0.20
2 A1 1992 1802 159.78 15.18 0.19 0.32
3 A1 1648 1490 19.39 7.78 0.37 0.54
4 B1 1336 1209 3.95 0.01 0.75 0.86
5 B2 3156 2855 96.36 66.82 0.75 0.86
6 B2 1367 1236 20.87 0.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6292.3 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 5692.0 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 HF/daug-cc-pVTZ
ABC
9.72560 1.35230 1.18722

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.661
C2 0.000 0.000 -0.517
H3 0.000 0.927 -1.095
H4 0.000 -0.927 -1.095

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.17851.98621.9862
C21.17851.09271.0927
H31.98621.09271.8547
H41.98621.09271.8547

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.934 O1 C2 H4 121.934
H3 C2 H4 116.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.956      
2 C -0.774      
3 H 0.865      
4 H 0.865      


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 -2.712 2.712
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.653 0.000 0.000
y 0.000 -11.422 0.000
z 0.000 0.000 -12.131
Traceless
 xyz
x 0.124 0.000 0.000
y 0.000 0.470 0.000
z 0.000 0.000 -0.593
Polar
3z2-r2-1.187
x2-y2-0.231
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.813 0.000 0.000
y 0.000 2.397 0.000
z 0.000 0.000 3.054


<r2> (average value of r2) Å2
<r2> 16.552
(<r2>)1/2 4.068