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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBE/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/cc-pVQZ
 hartrees
Energy at 0K-114.424745
Energy at 298.15K-114.426179
HF Energy-114.424745
Nuclear repulsion energy31.164040
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 PBEPBE/cc-pVQZ
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 2786 2786 78.29      
2 A1 1769 1769 99.75      
3 A1 1482 1482 8.39      
4 B1 1154 1154 4.04      
5 B2 2829 2829 154.29      
6 B2 1223 1223 9.41      

Unscaled Zero Point Vibrational Energy (zpe) 5621.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5621.8 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 PBEPBE/cc-pVQZ
ABC
9.33352 1.28780 1.13166

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.678
C2 0.000 0.000 -0.529
H3 0.000 0.947 -1.124
H4 0.000 -0.947 -1.124

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20702.03532.0353
C21.20701.11791.1179
H32.03531.11791.8932
H42.03531.11791.8932

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.140 O1 C2 H4 122.140
H3 C2 H4 115.721
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.303      
2 C 0.241      
3 H 0.031      
4 H 0.031      


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 -2.172 2.172
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.734 0.000 0.000
y 0.000 -11.756 0.000
z 0.000 0.000 -12.351
Traceless
 xyz
x 0.320 0.000 0.000
y 0.000 0.286 0.000
z 0.000 0.000 -0.605
Polar
3z2-r2-1.211
x2-y20.023
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.719 0.000 0.000
y 0.000 2.699 0.000
z 0.000 0.000 3.305


<r2> (average value of r2) Å2
<r2> 17.136
(<r2>)1/2 4.140