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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-114.511060
Energy at 298.15K-114.512505
HF Energy-114.511060
Nuclear repulsion energy31.278374
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 TPSSh/6-31G(2df,p)
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 2884 2783 61.59 152.13 0.16 0.28
2 A1 1829 1765 94.98 3.64 0.32 0.49
3 A1 1550 1496 7.22 13.43 0.59 0.74
4 B1 1199 1157 2.27 1.67 0.75 0.86
5 B2 2929 2827 158.47 80.22 0.75 0.86
6 B2 1271 1227 13.04 5.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5831.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5627.2 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 TPSSh/6-31G(2df,p)
ABC
9.51511 1.29409 1.13916

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.676
C2 0.000 0.000 -0.527
H3 0.000 0.938 -1.123
H4 0.000 -0.938 -1.123

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20362.02842.0284
C21.20361.11041.1104
H32.02841.11041.8751
H42.02841.11041.8751

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.405 O1 C2 H4 122.405
H3 C2 H4 115.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.193      
2 C -0.036      
3 H 0.115      
4 H 0.115      


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 -2.103 2.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.296 0.000 0.000
y 0.000 2.297 0.000
z 0.000 0.000 2.778


<r2> (average value of r2) Å2
<r2> 16.801
(<r2>)1/2 4.099