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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-114.453971
Energy at 298.15K-114.455414
HF Energy-114.453971
Nuclear repulsion energy31.262064
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 B3PW91/6-31G*
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 2927 2800 58.67      
2 A1 1864 1784 101.09      
3 A1 1561 1493 5.57      
4 B1 1197 1146 2.03      
5 B2 2979 2850 166.16      
6 B2 1278 1223 11.84      

Unscaled Zero Point Vibrational Energy (zpe) 5903.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 5647.7 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 B3PW91/6-31G*
ABC
9.50597 1.29274 1.13799

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.677
C2 0.000 0.000 -0.528
H3 0.000 0.938 -1.122
H4 0.000 -0.938 -1.122

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20452.02882.0288
C21.20451.11051.1105
H32.02881.11051.8760
H42.02881.11051.8760

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.363 O1 C2 H4 122.363
H3 C2 H4 115.274
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.326      
2 C 0.052      
3 H 0.137      
4 H 0.137      


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 -2.214 2.214
CHELPG        
AIM        
ESP 0.000 0.000 -2.213 2.213


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.400 0.000 0.000
y 0.000 -11.446 0.000
z 0.000 0.000 -11.849
Traceless
 xyz
x 0.248 0.000 0.000
y 0.000 0.179 0.000
z 0.000 0.000 -0.426
Polar
3z2-r2-0.853
x2-y20.046
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.007 0.000 0.000
y 0.000 2.102 0.000
z 0.000 0.000 2.726


<r2> (average value of r2) Å2
<r2> 16.836
(<r2>)1/2 4.103