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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-113.823618
Energy at 298.15K-113.825067
HF Energy-113.823618
Nuclear repulsion energy30.942100
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 wB97X-D/3-21G*
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 2954 2800 32.29 139.10 0.17 0.29
2 A1 1785 1692 52.79 0.62 0.14 0.24
3 A1 1588 1505 11.63 17.14 0.65 0.79
4 B1 1230 1166 8.00 1.36 0.75 0.86
5 B2 3009 2852 157.78 67.19 0.75 0.86
6 B2 1292 1224 10.23 7.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5928.6 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 5619.1 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 wB97X-D/3-21G*
ABC
9.75545 1.25465 1.11168

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.687
C2 0.000 0.000 -0.537
H3 0.000 0.926 -1.136
H4 0.000 -0.926 -1.136

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.22382.04412.0441
C21.22381.10251.1025
H32.04411.10251.8518
H42.04411.10251.8518

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.880 O1 C2 H4 122.880
H3 C2 H4 114.240
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.391      
2 C 0.036      
3 H 0.177      
4 H 0.177      


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 -2.260 2.260
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.477 0.000 0.000
y 0.000 -11.413 0.000
z 0.000 0.000 -12.038
Traceless
 xyz
x 0.248 0.000 0.000
y 0.000 0.344 0.000
z 0.000 0.000 -0.593
Polar
3z2-r2-1.185
x2-y2-0.064
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.763 0.000 0.000
y 0.000 1.812 0.000
z 0.000 0.000 2.488


<r2> (average value of r2) Å2
<r2> 17.070
(<r2>)1/2 4.132