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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBEultrafine/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-114.374970
Energy at 298.15K-114.376402
HF Energy-114.374970
Nuclear repulsion energy30.954489
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2775 2759 66.25 201.20 0.16 0.28
2 A1 1784 1773 99.30 3.28 0.63 0.78
3 A1 1469 1460 4.24 16.49 0.67 0.80
4 B1 1140 1134 1.86 2.39 0.75 0.86
5 B2 2813 2797 205.53 119.63 0.75 0.86
6 B2 1212 1205 12.23 7.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5596.3 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 5563.9 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 PBEPBEultrafine/cc-pVDZ
ABC
9.21153 1.27012 1.11621

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVDZ

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 -0.530
H3 0.000 0.953 -1.140
H4 0.000 -0.953 -1.140

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21272.05622.0562
C21.21271.13101.1310
H32.05621.13101.9057
H42.05621.13101.9057

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.599 O1 C2 H4 122.599
H3 C2 H4 114.802
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.156      
2 C 0.124      
3 H 0.016      
4 H 0.016      


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 -1.907 1.907
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.455 0.000 0.000
y 0.000 -11.662 0.000
z 0.000 0.000 -11.929
Traceless
 xyz
x 0.341 0.000 0.000
y 0.000 0.030 0.000
z 0.000 0.000 -0.371
Polar
3z2-r2-0.742
x2-y20.207
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.124 0.000 0.000
y 0.000 2.291 0.000
z 0.000 0.000 2.843


<r2> (average value of r2) Å2
<r2> 17.123
(<r2>)1/2 4.138