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All results from a given calculation for H2CO (Formaldehyde)

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

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-113.946540
Energy at 298.15K-113.947974
HF Energy-113.946540
Nuclear repulsion energy31.362286
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/6-311+G(3df,2p)
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 2786 2786 71.85      
2 A1 1821 1821 107.61      
3 A1 1465 1465 8.33      
4 B1 1145 1145 7.09      
5 B2 2836 2836 117.87      
6 B2 1218 1218 8.25      

Unscaled Zero Point Vibrational Energy (zpe) 5635.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5635.2 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/6-311+G(3df,2p)
ABC
9.26725 1.30940 1.14729

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

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 -0.524
H3 0.000 0.950 -1.116
H4 0.000 -0.950 -1.116

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19642.02532.0253
C21.19641.11951.1195
H32.02531.11951.9000
H42.02531.11951.9000

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.940 O1 C2 H4 121.940
H3 C2 H4 116.119
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.422      
2 C 0.130      
3 H 0.146      
4 H 0.146      


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 -2.285 2.285
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.821 0.000 0.000
y 0.000 -11.721 0.000
z 0.000 0.000 -12.452
Traceless
 xyz
x 0.265 0.000 0.000
y 0.000 0.416 0.000
z 0.000 0.000 -0.681
Polar
3z2-r2-1.361
x2-y2-0.101
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.835 0.000 0.000
y 0.000 2.748 0.000
z 0.000 0.000 3.327


<r2> (average value of r2) Å2
<r2> 17.055
(<r2>)1/2 4.130