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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-114.380886
Energy at 298.15K-114.382331
HF Energy-114.380886
Nuclear repulsion energy31.300575
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2920 2787 54.94 155.64 0.17 0.28
2 A1 1876 1790 101.21 3.80 0.42 0.59
3 A1 1556 1485 5.97 14.02 0.63 0.77
4 B1 1207 1152 2.06 1.98 0.75 0.86
5 B2 2980 2844 154.59 75.61 0.75 0.86
6 B2 1277 1219 12.27 6.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5908.3 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 5638.2 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 HSEh1PBE/6-31G**
ABC
9.50625 1.29656 1.14095

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 -0.527
H3 0.000 0.938 -1.121
H4 0.000 -0.938 -1.121

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20262.02662.0266
C21.20261.11021.1102
H32.02661.11021.8759
H42.02661.11021.8759

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.341 O1 C2 H4 122.341
H3 C2 H4 115.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.342      
2 C 0.144      
3 H 0.099      
4 H 0.099      


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 -2.215 2.215
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.409 0.000 0.000
y 0.000 -11.454 0.000
z 0.000 0.000 -11.877
Traceless
 xyz
x 0.256 0.000 0.000
y 0.000 0.189 0.000
z 0.000 0.000 -0.445
Polar
3z2-r2-0.890
x2-y20.045
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.036 0.000 0.000
y 0.000 2.116 0.000
z 0.000 0.000 2.739


<r2> (average value of r2) Å2
<r2> 16.823
(<r2>)1/2 4.102