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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-113.869743
Energy at 298.15K-113.871208
HF Energy-113.869743
Nuclear repulsion energy31.783615
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 HF/6-31G**
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 3122 2818 48.86 138.05 0.18 0.30
2 A1 2024 1827 146.99 8.41 0.34 0.51
3 A1 1668 1506 10.01 12.36 0.59 0.74
4 B1 1335 1205 0.62 0.68 0.75 0.86
5 B2 3197 2886 132.50 58.65 0.75 0.86
6 B2 1377 1243 22.91 4.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6361.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 5741.9 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 HF/6-31G**
ABC
9.75631 1.33824 1.17682

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.665
C2 0.000 0.000 -0.520
H3 0.000 0.926 -1.101
H4 0.000 -0.926 -1.101

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.18461.99381.9938
C21.18461.09321.0932
H31.99381.09321.8517
H41.99381.09321.8517

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.120 O1 C2 H4 122.120
H3 C2 H4 115.760
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.432      
2 C 0.245      
3 H 0.093      
4 H 0.093      


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 -2.664 2.664
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.446 0.000 0.000
y 0.000 -11.447 0.000
z 0.000 0.000 -11.940
Traceless
 xyz
x 0.248 0.000 0.000
y 0.000 0.246 0.000
z 0.000 0.000 -0.493
Polar
3z2-r2-0.987
x2-y20.001
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.995 0.000 0.000
y 0.000 1.939 0.000
z 0.000 0.000 2.641


<r2> (average value of r2) Å2
<r2> 16.548
(<r2>)1/2 4.068