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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-114.500473
Energy at 298.15K-114.501917
HF Energy-114.500473
Nuclear repulsion energy31.224875
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 B3LYP/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 2916 2800 56.05 152.06 0.17 0.29
2 A1 1851 1777 98.81 3.01 0.41 0.58
3 A1 1563 1501 6.43 14.96 0.63 0.77
4 B1 1199 1151 1.44 2.12 0.75 0.86
5 B2 2967 2849 165.00 75.16 0.75 0.86
6 B2 1280 1229 12.61 7.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5887.4 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 5653.7 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 B3LYP/6-31G*
ABC
9.51079 1.28893 1.13510

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.678
C2 0.000 0.000 -0.529
H3 0.000 0.938 -1.124
H4 0.000 -0.938 -1.124

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20642.03082.0308
C21.20641.11061.1106
H32.03081.11061.8755
H42.03081.11061.8755

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.393 O1 C2 H4 122.393
H3 C2 H4 115.213
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.323      
2 C 0.080      
3 H 0.121      
4 H 0.121      


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 -2.186 2.186
CHELPG 0.000 0.000 -2.189 2.189
AIM 0.000 0.000 1.767 1.767
ESP 0.000 0.000 -2.187 2.187


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.405 0.000 0.000
y 0.000 -11.509 0.000
z 0.000 0.000 -11.928
Traceless
 xyz
x 0.314 0.000 0.000
y 0.000 0.157 0.000
z 0.000 0.000 -0.471
Polar
3z2-r2-0.942
x2-y20.105
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.002 0.000 0.000
y 0.000 2.094 0.000
z 0.000 0.000 2.721


<r2> (average value of r2) Å2
<r2> 16.889
(<r2>)1/2 4.110