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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-114.488000
Energy at 298.15K-114.489446
HF Energy-114.488000
Nuclear repulsion energy31.382328
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 B3PW91/6-311G**
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 2880 2774 65.33 175.77 0.17 0.29
2 A1 1843 1775 112.17 4.96 0.58 0.73
3 A1 1537 1480 7.50 12.83 0.63 0.77
4 B1 1202 1158 2.77 1.36 0.75 0.86
5 B2 2932 2824 163.46 97.32 0.75 0.86
6 B2 1269 1222 14.06 4.76 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5832.0 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 5616.8 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 B3PW91/6-311G**
ABC
9.47360 1.30561 1.14747

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.673
C2 0.000 0.000 -0.525
H3 0.000 0.940 -1.117
H4 0.000 -0.940 -1.117

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19842.02212.0221
C21.19841.11061.1106
H32.02211.11061.8792
H42.02211.11061.8792

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.223 O1 C2 H4 122.223
H3 C2 H4 115.554
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.258      
2 C 0.094      
3 H 0.082      
4 H 0.082      


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 -2.254 2.254
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.469 0.000 0.000
y 0.000 -11.467 0.000
z 0.000 0.000 -11.976
Traceless
 xyz
x 0.253 0.000 0.000
y 0.000 0.255 0.000
z 0.000 0.000 -0.508
Polar
3z2-r2-1.015
x2-y2-0.002
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.172 0.000 0.000
y 0.000 2.120 0.000
z 0.000 0.000 2.833


<r2> (average value of r2) Å2
<r2> 16.811
(<r2>)1/2 4.100