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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/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 BLYP/6-31G*
 hartrees
Energy at 0K-114.472199
Energy at 298.15K-114.473634
HF Energy-114.472199
Nuclear repulsion energy30.923759
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 BLYP/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 2806 2783 63.14 159.45 0.17 0.29
2 A1 1775 1761 87.09 1.98 0.41 0.58
3 A1 1522 1509 6.65 16.32 0.64 0.78
4 B1 1154 1144 1.46 2.67 0.75 0.86
5 B2 2841 2818 195.54 84.69 0.75 0.86
6 B2 1242 1232 9.94 9.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5669.8 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 5623.9 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 BLYP/6-31G*
ABC
9.36606 1.26311 1.11301

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.684
C2 0.000 0.000 -0.534
H3 0.000 0.945 -1.137
H4 0.000 -0.945 -1.137

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21822.05162.0516
C21.21821.12091.1209
H32.05161.12091.8899
H42.05161.12091.8899

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.538 O1 C2 H4 122.538
H3 C2 H4 114.925
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.297      
2 C 0.082      
3 H 0.107      
4 H 0.107      


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 -2.022 2.022
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.431 0.000 0.000
y 0.000 -11.605 0.000
z 0.000 0.000 -12.000
Traceless
 xyz
x 0.371 0.000 0.000
y 0.000 0.111 0.000
z 0.000 0.000 -0.482
Polar
3z2-r2-0.964
x2-y20.174
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.018 0.000 0.000
y 0.000 2.188 0.000
z 0.000 0.000 2.800


<r2> (average value of r2) Å2
<r2> 17.121
(<r2>)1/2 4.138