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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HSEh1PBE/SDD

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/SDD
 hartrees
Energy at 0K-114.360070
Energy at 298.15K-114.361512
HF Energy-114.360070
Nuclear repulsion energy30.712928
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/SDD
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 2997 2997 71.48      
2 A1 1733 1733 68.52      
3 A1 1543 1543 15.51      
4 B1 1209 1209 16.50      
5 B2 3079 3079 127.27      
6 B2 1258 1258 5.51      

Unscaled Zero Point Vibrational Energy (zpe) 5910.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5910.0 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/SDD
ABC
9.50965 1.23886 1.09607

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.691
C2 0.000 0.000 -0.545
H3 0.000 0.938 -1.129
H4 0.000 -0.938 -1.129

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.23622.04762.0476
C21.23621.10481.1048
H32.04761.10481.8756
H42.04761.10481.8756

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.914 O1 C2 H4 121.914
H3 C2 H4 116.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.213      
2 C -0.147      
3 H 0.180      
4 H 0.180      


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 -2.759 2.759
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.676 0.000 0.000
y 0.000 -11.328 0.000
z 0.000 0.000 -12.259
Traceless
 xyz
x 0.118 0.000 0.000
y 0.000 0.639 0.000
z 0.000 0.000 -0.757
Polar
3z2-r2-1.515
x2-y2-0.347
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.957 0.000 0.000
y 0.000 1.717 0.000
z 0.000 0.000 2.693


<r2> (average value of r2) Å2
<r2> 17.254
(<r2>)1/2 4.154