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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-114.462583
Energy at 298.15K-114.464025
HF Energy-114.462583
Nuclear repulsion energy31.240871
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 B3PW91/cc-pVDZ
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 2883 2782 60.13      
2 A1 1850 1785 110.87      
3 A1 1516 1463 5.41      
4 B1 1189 1147 2.02      
5 B2 2938 2835 169.68      
6 B2 1254 1210 15.19      

Unscaled Zero Point Vibrational Energy (zpe) 5814.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5611.1 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 B3PW91/cc-pVDZ
ABC
9.36931 1.29421 1.13713

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

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 -0.526
H3 0.000 0.945 -1.127
H4 0.000 -0.945 -1.127

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20222.03542.0354
C21.20221.11951.1195
H32.03541.11951.8896
H42.03541.11951.8896

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.445 O1 C2 H4 122.445
H3 C2 H4 115.110
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.190      
2 C 0.137      
3 H 0.027      
4 H 0.027      


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 -2.111 2.111
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.377 0.000 0.000
y 0.000 -11.480 0.000
z 0.000 0.000 -11.821
Traceless
 xyz
x 0.274 0.000 0.000
y 0.000 0.119 0.000
z 0.000 0.000 -0.392
Polar
3z2-r2-0.785
x2-y20.103
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.104 0.000 0.000
y 0.000 2.143 0.000
z 0.000 0.000 2.745


<r2> (average value of r2) Å2
<r2> 16.861
(<r2>)1/2 4.106