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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3LYPultrafine/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/CEP-31G*
 hartrees
Energy at 0K-22.800305
Energy at 298.15K-22.801743
HF Energy-22.800305
Nuclear repulsion energy17.566720
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 B3LYPultrafine/CEP-31G*
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 2924 2824 85.17      
2 A1 1813 1750 113.29      
3 A1 1529 1476 7.63      
4 B1 1185 1144 8.43      
5 B2 2991 2889 165.22      
6 B2 1253 1210 9.94      

Unscaled Zero Point Vibrational Energy (zpe) 5846.8 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 5646.2 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 B3LYPultrafine/CEP-31G*
ABC
9.29625 1.26219 1.11130

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.685
C2 0.000 0.000 -0.537
H3 0.000 0.948 -1.129
H4 0.000 -0.948 -1.129

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.22142.04642.0464
C21.22141.11801.1180
H32.04641.11801.8970
H42.04641.11801.8970

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.964 O1 C2 H4 121.964
H3 C2 H4 116.071
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.087      
2 C -0.256      
3 H 0.172      
4 H 0.172      


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 -2.526 2.526
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.568 0.000 0.000
y 0.000 -11.240 0.000
z 0.000 0.000 -11.811
Traceless
 xyz
x -0.042 0.000 0.000
y 0.000 0.449 0.000
z 0.000 0.000 -0.407
Polar
3z2-r2-0.813
x2-y2-0.328
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.194 0.000 0.000
y 0.000 1.827 0.000
z 0.000 0.000 2.671


<r2> (average value of r2) Å2
<r2> 15.519
(<r2>)1/2 3.939