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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBE1PBE/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 PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-114.413624
Energy at 298.15K-114.415070
HF Energy-114.413624
Nuclear repulsion energy31.453039
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 PBE1PBE/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 2898 2785 67.04 178.68 0.14 0.25
2 A1 1856 1783 108.54 5.75 0.53 0.69
3 A1 1533 1473 9.26 10.81 0.54 0.70
4 B1 1206 1159 3.62 0.93 0.75 0.86
5 B2 2956 2841 136.27 92.77 0.75 0.86
6 B2 1268 1218 12.69 3.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5858.0 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 5629.5 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 PBE1PBE/cc-pVTZ
ABC
9.48587 1.31242 1.15291

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.671
C2 0.000 0.000 -0.524
H3 0.000 0.939 -1.113
H4 0.000 -0.939 -1.113

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19582.01632.0163
C21.19581.10821.1082
H32.01631.10821.8779
H42.01631.10821.8779

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.081 O1 C2 H4 122.081
H3 C2 H4 115.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.232      
2 C 0.151      
3 H 0.041      
4 H 0.041      


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 -2.272 2.272
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.578 0.000 0.000
y 0.000 -11.536 0.000
z 0.000 0.000 -12.058
Traceless
 xyz
x 0.219 0.000 0.000
y 0.000 0.282 0.000
z 0.000 0.000 -0.501
Polar
3z2-r2-1.002
x2-y2-0.042
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.473 0.000 0.000
y 0.000 2.360 0.000
z 0.000 0.000 2.992


<r2> (average value of r2) Å2
<r2> 16.819
(<r2>)1/2 4.101