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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-113.895765
Energy at 298.15K-113.897231
HF Energy-113.895765
Nuclear repulsion energy31.908298
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/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 3121 2823 61.21 140.79 0.19 0.33
2 A1 2014 1821 163.72 9.01 0.35 0.52
3 A1 1671 1511 12.30 11.94 0.63 0.78
4 B1 1330 1203 0.48 0.44 0.75 0.86
5 B2 3191 2886 144.07 67.97 0.75 0.86
6 B2 1386 1253 26.09 3.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6355.9 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 5748.3 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/6-311G*
ABC
9.72827 1.35165 1.18676

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.662
C2 0.000 0.000 -0.517
H3 0.000 0.927 -1.097
H4 0.000 -0.927 -1.097

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.17831.98771.9877
C21.17831.09361.0936
H31.98771.09361.8544
H41.98771.09361.8544

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.024 O1 C2 H4 122.024
H3 C2 H4 115.952
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.345      
2 C 0.006      
3 H 0.169      
4 H 0.169      


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 -2.651 2.651
CHELPG        
AIM        
ESP 0.000 0.000 -2.646 2.646


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.503 0.000 0.000
y 0.000 -11.388 0.000
z 0.000 0.000 -12.002
Traceless
 xyz
x 0.192 0.000 0.000
y 0.000 0.364 0.000
z 0.000 0.000 -0.556
Polar
3z2-r2-1.112
x2-y2-0.115
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.056 0.000 0.000
y 0.000 1.877 0.000
z 0.000 0.000 2.655


<r2> (average value of r2) Å2
<r2> 16.493
(<r2>)1/2 4.061