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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-114.414890
Energy at 298.15K-114.416327
HF Energy-114.414890
Nuclear repulsion energy31.106832
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 PBEPBE/TZVP
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 2792 2761 72.68 201.95 0.16 0.28
2 A1 1771 1751 101.85 5.93 0.51 0.68
3 A1 1496 1479 8.14 13.24 0.62 0.76
4 B1 1164 1151 3.83 3.18 0.75 0.86
5 B2 2838 2806 168.80 116.95 0.75 0.86
6 B2 1231 1218 7.09 7.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5646.4 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 5583.2 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 PBEPBE/TZVP
ABC
9.31827 1.28257 1.12739

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

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 -0.530
H3 0.000 0.947 -1.126
H4 0.000 -0.947 -1.126

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20962.03852.0385
C21.20961.11891.1189
H32.03851.11891.8948
H42.03851.11891.8948

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.144 O1 C2 H4 122.144
H3 C2 H4 115.711
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.221      
2 C 0.059      
3 H 0.081      
4 H 0.081      


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 -2.214 2.214
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.710 0.000 0.000
y 0.000 -11.782 0.000
z 0.000 0.000 -12.422
Traceless
 xyz
x 0.391 0.000 0.000
y 0.000 0.285 0.000
z 0.000 0.000 -0.676
Polar
3z2-r2-1.352
x2-y20.071
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.331 0.000 0.000
y 0.000 2.403 0.000
z 0.000 0.000 3.226


<r2> (average value of r2) Å2
<r2> 17.185
(<r2>)1/2 4.146