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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HSEh1PBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/Def2TZVPP
 hartrees
Energy at 0K-114.429837
Energy at 298.15K-114.431283
HF Energy-114.429837
Nuclear repulsion energy31.468471
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 HSEh1PBE/Def2TZVPP
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 2902 2902 67.09 179.22 0.14 0.25
2 A1 1850 1850 113.45 7.25 0.45 0.62
3 A1 1533 1533 9.84 9.99 0.51 0.68
4 B1 1208 1208 3.93 1.00 0.75 0.86
5 B2 2962 2962 127.79 90.78 0.75 0.86
6 B2 1269 1269 11.88 3.65 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5861.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5861.6 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 HSEh1PBE/Def2TZVPP
ABC
9.48209 1.31412 1.15417

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.671
C2 0.000 0.000 -0.524
H3 0.000 0.939 -1.111
H4 0.000 -0.939 -1.111

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19542.01442.0144
C21.19541.10741.1074
H32.01441.10741.8783
H42.01441.10741.8783

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.997 O1 C2 H4 121.997
H3 C2 H4 116.007
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.250      
2 C 0.117      
3 H 0.067      
4 H 0.067      


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 -2.315 2.315
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.625 0.000 0.000
y 0.000 -11.584 0.000
z 0.000 0.000 -12.181
Traceless
 xyz
x 0.258 0.000 0.000
y 0.000 0.319 0.000
z 0.000 0.000 -0.577
Polar
3z2-r2-1.154
x2-y2-0.041
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.564 0.000 0.000
y 0.000 2.401 0.000
z 0.000 0.000 3.105


<r2> (average value of r2) Å2
<r2> 16.853
(<r2>)1/2 4.105