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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HSEh1PBE/6-311G*

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/6-311G*
 hartrees
Energy at 0K-114.408610
Energy at 298.15K-114.410056
HF Energy-114.408610
Nuclear repulsion energy31.437977
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/6-311G*
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 2907 2790 69.00 168.47 0.18 0.31
2 A1 1867 1791 117.39 4.73 0.55 0.71
3 A1 1553 1490 7.46 13.37 0.64 0.78
4 B1 1200 1151 2.40 1.62 0.75 0.86
5 B2 2963 2844 172.78 95.07 0.75 0.86
6 B2 1286 1234 14.72 5.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5887.6 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 5649.7 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/6-311G*
ABC
9.46302 1.31152 1.15188

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.672
C2 0.000 0.000 -0.524
H3 0.000 0.940 -1.114
H4 0.000 -0.940 -1.114

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19602.01802.0180
C21.19601.10971.1097
H32.01801.10971.8802
H42.01801.10971.8802

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.097 O1 C2 H4 122.097
H3 C2 H4 115.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.255      
2 C -0.088      
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 -2.254 2.254
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.547 0.000 0.000
y 0.000 -11.478 0.000
z 0.000 0.000 -11.996
Traceless
 xyz
x 0.190 0.000 0.000
y 0.000 0.293 0.000
z 0.000 0.000 -0.483
Polar
3z2-r2-0.966
x2-y2-0.069
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.117 0.000 0.000
y 0.000 2.092 0.000
z 0.000 0.000 2.788


<r2> (average value of r2) Å2
<r2> 16.799
(<r2>)1/2 4.099