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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G**
 hartrees
Energy at 0K-114.369839
Energy at 298.15K-114.371273
HF Energy-114.369839
Nuclear repulsion energy30.975596
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 PBEPBEultrafine/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 2805 2767 61.37 164.24 0.16 0.28
2 A1 1796 1772 87.22 2.70 0.43 0.60
3 A1 1508 1488 5.30 15.41 0.65 0.79
4 B1 1154 1138 2.19 2.64 0.75 0.86
5 B2 2847 2808 183.81 86.88 0.75 0.86
6 B2 1233 1216 9.09 8.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5671.6 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 5593.9 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 PBEPBEultrafine/6-31G**
ABC
9.35071 1.26858 1.11703

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.683
C2 0.000 0.000 -0.532
H3 0.000 0.946 -1.136
H4 0.000 -0.946 -1.136

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21502.04982.0498
C21.21501.12191.1219
H32.04981.12191.8915
H42.04981.12191.8915

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.545 O1 C2 H4 122.545
H3 C2 H4 114.911
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.308      
2 C 0.129      
3 H 0.089      
4 H 0.089      


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 -2.019 2.019
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.441 0.000 0.000
y 0.000 -11.560 0.000
z 0.000 0.000 -11.939
Traceless
 xyz
x 0.309 0.000 0.000
y 0.000 0.130 0.000
z 0.000 0.000 -0.438
Polar
3z2-r2-0.876
x2-y20.119
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.054 0.000 0.000
y 0.000 2.224 0.000
z 0.000 0.000 2.823


<r2> (average value of r2) Å2
<r2> 17.072
(<r2>)1/2 4.132