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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HF/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-113.913221
Energy at 298.15K-113.914686
HF Energy-113.913221
Nuclear repulsion energy31.945059
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/6-311+G(3df,2pd)
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 3086 2795 64.71 134.32 0.13 0.23
2 A1 1998 1810 159.24 16.10 0.20 0.33
3 A1 1649 1494 19.25 7.72 0.42 0.59
4 B1 1337 1212 4.00 0.03 0.75 0.86
5 B2 3155 2859 95.65 66.72 0.75 0.86
6 B2 1369 1240 20.66 1.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6296.8 cm-1
Scaled (by 0.906) Zero Point Vibrational Energy (zpe) 5704.9 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 HF/6-311+G(3df,2pd)
ABC
9.72842 1.35544 1.18968

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2pd)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.661
C2 0.000 0.000 -0.516
H3 0.000 0.927 -1.094
H4 0.000 -0.927 -1.094

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.17691.98481.9848
C21.17691.09261.0926
H31.98481.09261.8544
H41.98481.09261.8544

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.938 O1 C2 H4 121.938
H3 C2 H4 116.123
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.609      
2 C 0.524      
3 H 0.042      
4 H 0.042      


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 -2.735 2.735
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.628 0.000 0.000
y 0.000 -11.423 0.000
z 0.000 0.000 -12.150
Traceless
 xyz
x 0.158 0.000 0.000
y 0.000 0.466 0.000
z 0.000 0.000 -0.624
Polar
3z2-r2-1.249
x2-y2-0.205
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.694 0.000 0.000
y 0.000 2.302 0.000
z 0.000 0.000 2.984


<r2> (average value of r2) Å2
<r2> 16.534
(<r2>)1/2 4.066