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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-113.808367
Energy at 298.15K-113.809830
HF Energy-113.808367
Nuclear repulsion energy31.377583
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 3208 2897 23.03 135.97 0.18 0.30
2 A1 1910 1724 90.50 7.01 0.22 0.37
3 A1 1674 1511 24.32 17.11 0.57 0.73
4 B1 1329 1200 6.00 0.12 0.75 0.86
5 B2 3300 2979 95.35 54.18 0.75 0.86
6 B2 1374 1240 17.85 4.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6396.9 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 5775.8 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
9.87893 1.29433 1.14439

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 0.676
C2 0.000 0.000 -0.534
H3 0.000 0.920 -1.102
H4 0.000 -0.920 -1.102

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21012.00242.0024
C21.21011.08151.0815
H32.00241.08151.8402
H42.00241.08151.8402

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.706 O1 C2 H4 121.706
H3 C2 H4 116.588
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 -0.454      
2 C 0.159      
3 H 0.148      
4 H 0.148      


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 -3.043 3.043
CHELPG 0.000 0.000 -3.021 3.021
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.638 0.000 0.000
y 0.000 -11.481 0.000
z 0.000 0.000 -12.447
Traceless
 xyz
x 0.326 0.000 0.000
y 0.000 0.561 0.000
z 0.000 0.000 -0.888
Polar
3z2-r2-1.775
x2-y2-0.157
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.817 0.000 0.000
y 0.000 1.695 0.000
z 0.000 0.000 2.761


<r2> (average value of r2) Å2
<r2> 16.897
(<r2>)1/2 4.111