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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: LSDA/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/aug-cc-pVTZ
 hartrees
Energy at 0K-113.950923
Energy at 298.15K-113.952356
HF Energy-113.950923
Nuclear repulsion energy31.325331
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 LSDA/aug-cc-pVTZ
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 2785 2759 73.47      
2 A1 1811 1794 108.81      
3 A1 1462 1448 8.92      
4 B1 1143 1132 7.08      
5 B2 2836 2810 119.88      
6 B2 1214 1202 8.34      

Unscaled Zero Point Vibrational Energy (zpe) 5625.6 cm-1
Scaled (by 0.9906) Zero Point Vibrational Energy (zpe) 5572.7 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 LSDA/aug-cc-pVTZ
ABC
9.26072 1.30591 1.14452

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.673
C2 0.000 0.000 -0.525
H3 0.000 0.950 -1.117
H4 0.000 -0.950 -1.117

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19822.02692.0269
C21.19821.11971.1197
H32.02691.11971.9006
H42.02691.11971.9006

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.926 O1 C2 H4 121.926
H3 C2 H4 116.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.386      
2 C -0.225      
3 H 0.305      
4 H 0.305      


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 -2.252 2.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.842 0.000 0.000
y 0.000 -11.743 0.000
z 0.000 0.000 -12.470
Traceless
 xyz
x 0.265 0.000 0.000
y 0.000 0.413 0.000
z 0.000 0.000 -0.677
Polar
3z2-r2-1.355
x2-y2-0.099
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.990 0.000 0.000
y 0.000 2.913 0.000
z 0.000 0.000 3.482


<r2> (average value of r2) Å2
<r2> 17.088
(<r2>)1/2 4.134