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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: LSDA/aug-cc-pCVTZ

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-pCVTZ
 hartrees
Energy at 0K-113.953083
Energy at 298.15K 
HF Energy-113.953083
Nuclear repulsion energy31.327410
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-pCVTZ
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 2784 2784 73.25 218.59 0.10 0.19
2 A1 1810 1810 108.81 7.93 0.40 0.57
3 A1 1461 1461 9.02 8.17 0.43 0.61
4 B1 1142 1142 7.12 0.61 0.75 0.86
5 B2 2837 2837 119.49 135.43 0.75 0.86
6 B2 1213 1213 8.35 1.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5623.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5623.7 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-pCVTZ
ABC
9.25336 1.30636 1.14475

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

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 0.951 -1.116
H4 0.000 -0.951 -1.116

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19822.02642.0264
C21.19821.11961.1196
H32.02641.11961.9014
H42.02641.11961.9014

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.880 O1 C2 H4 121.880
H3 C2 H4 116.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.446      
2 C -0.315      
3 H 0.381      
4 H 0.381      


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 -11.838 0.000 0.000
y 0.000 -11.737 0.000
z 0.000 0.000 -12.467
Traceless
 xyz
x 0.264 0.000 0.000
y 0.000 0.416 0.000
z 0.000 0.000 -0.680
Polar
3z2-r2-1.359
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 1.988 0.000 0.000
y 0.000 2.913 0.000
z 0.000 0.000 3.479


<r2> (average value of r2) Å2
<r2> 17.083
(<r2>)1/2 4.133