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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/cc-pVTZ
 hartrees
Energy at 0K-114.414179
Energy at 298.15K-114.415614
HF Energy-114.414179
Nuclear repulsion energy31.137825
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-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 2766 75.81 198.45 0.14 0.25
2 A1 1773 1760 96.64 4.86 0.63 0.77
3 A1 1486 1475 7.69 12.30 0.57 0.72
4 B1 1153 1145 3.54 1.65 0.75 0.86
5 B2 2826 2806 170.48 115.64 0.75 0.86
6 B2 1224 1215 9.79 4.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5622.8 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 5584.0 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-pVTZ
ABC
9.34166 1.28493 1.12956

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.679
C2 0.000 0.000 -0.529
H3 0.000 0.946 -1.126
H4 0.000 -0.946 -1.126

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20802.03782.0378
C21.20801.11871.1187
H32.03781.11871.8924
H42.03781.11871.8924

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.244 O1 C2 H4 122.244
H3 C2 H4 115.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.207      
2 C 0.142      
3 H 0.033      
4 H 0.033      


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 -2.110 2.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.669 0.000 0.000
y 0.000 -11.733 0.000
z 0.000 0.000 -12.204
Traceless
 xyz
x 0.300 0.000 0.000
y 0.000 0.203 0.000
z 0.000 0.000 -0.503
Polar
3z2-r2-1.007
x2-y20.065
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.508 0.000 0.000
y 0.000 2.526 0.000
z 0.000 0.000 3.129


<r2> (average value of r2) Å2
<r2> 17.106
(<r2>)1/2 4.136