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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBEultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/6-31+G**
 hartrees
Energy at 0K-114.378399
Energy at 298.15K-114.379831
HF Energy-114.378399
Nuclear repulsion energy30.943240
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 PBEPBEultrafine/6-31+G**
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 2824 2792 71.96 173.17 0.17 0.29
2 A1 1767 1747 105.99 8.06 0.32 0.49
3 A1 1489 1472 5.48 13.28 0.59 0.74
4 B1 1146 1133 6.18 1.72 0.75 0.86
5 B2 2877 2844 148.23 130.67 0.75 0.86
6 B2 1220 1206 6.87 3.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5661.2 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 5596.7 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 PBEPBEultrafine/6-31+G**
ABC
9.27601 1.26772 1.11530

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.683
C2 0.000 0.000 -0.535
H3 0.000 0.950 -1.128
H4 0.000 -0.950 -1.128

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21822.04472.0447
C21.21821.11931.1193
H32.04471.11931.8991
H42.04471.11931.8991

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.970 O1 C2 H4 121.970
H3 C2 H4 116.059
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.277      
2 C 0.024      
3 H 0.126      
4 H 0.126      


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 -2.359 2.359
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.839 0.000 0.000
y 0.000 -11.824 0.000
z 0.000 0.000 -12.451
Traceless
 xyz
x 0.298 0.000 0.000
y 0.000 0.321 0.000
z 0.000 0.000 -0.619
Polar
3z2-r2-1.239
x2-y2-0.015
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.378 0.000 0.000
y 0.000 2.443 0.000
z 0.000 0.000 3.289


<r2> (average value of r2) Å2
<r2> 17.317
(<r2>)1/2 4.161