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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3PW91/6-311+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 B3PW91/6-311+G(3df,2pd)
 hartrees
Energy at 0K-114.500360
Energy at 298.15K-114.501803
HF Energy-114.500360
Nuclear repulsion energy31.443118
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 B3PW91/6-311+G(3df,2pd)
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 2889 2889 71.40      
2 A1 1839 1839 112.09      
3 A1 1528 1528 10.50      
4 B1 1199 1199 5.99      
5 B2 2947 2947 115.29      
6 B2 1263 1263 11.14      

Unscaled Zero Point Vibrational Energy (zpe) 5832.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5832.1 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 B3PW91/6-311+G(3df,2pd)
ABC
9.47796 1.31171 1.15224

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2pd)

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 -0.525
H3 0.000 0.939 -1.112
H4 0.000 -0.939 -1.112

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19662.01562.0156
C21.19661.10761.1076
H32.01561.10761.8787
H42.01561.10761.8787

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.992 O1 C2 H4 121.992
H3 C2 H4 116.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.492      
2 C 0.392      
3 H 0.050      
4 H 0.050      


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 -2.384 2.384
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.630 0.000 0.000
y 0.000 -11.552 0.000
z 0.000 0.000 -12.244
Traceless
 xyz
x 0.268 0.000 0.000
y 0.000 0.385 0.000
z 0.000 0.000 -0.653
Polar
3z2-r2-1.305
x2-y2-0.078
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.784 0.000 0.000
y 0.000 2.573 0.000
z 0.000 0.000 3.209


<r2> (average value of r2) Å2
<r2> 16.875
(<r2>)1/2 4.108