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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B1B95/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/STO-3G
 hartrees
Energy at 0K-112.929766
Energy at 298.15K-112.931177
HF Energy-112.929766
Nuclear repulsion energy30.443920
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 B1B95/STO-3G
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 3186 2813 1.42 46.16 0.16 0.28
2 A1 1900 1677 7.26 3.26 0.12 0.22
3 A1 1636 1445 2.54 15.73 0.70 0.83
4 B1 1151 1016 7.80 0.19 0.75 0.86
5 B2 3309 2922 41.29 28.97 0.75 0.86
6 B2 1286 1135 15.82 3.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6234.0 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 5504.6 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 B1B95/STO-3G
ABC
9.50792 1.21291 1.07569

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.698
C2 0.000 0.000 -0.545
H3 0.000 0.938 -1.159
H4 0.000 -0.938 -1.159

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.24342.08082.0808
C21.24341.12101.1210
H32.08081.12101.8758
H42.08081.12101.8758

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 123.211 O1 C2 H4 123.211
H3 C2 H4 113.578
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.155      
2 C 0.018      
3 H 0.068      
4 H 0.068      


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 -1.380 1.380
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.461 0.000 0.000
y 0.000 -10.494 0.000
z 0.000 0.000 -11.064
Traceless
 xyz
x 0.318 0.000 0.000
y 0.000 0.268 0.000
z 0.000 0.000 -0.586
Polar
3z2-r2-1.173
x2-y20.033
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.389 0.000 0.000
y 0.000 0.927 0.000
z 0.000 0.000 1.542


<r2> (average value of r2) Å2
<r2> 16.796
(<r2>)1/2 4.098