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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBE1PBE/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 PBE1PBE/cc-pVDZ
 hartrees
Energy at 0K-114.376948
Energy at 298.15K-114.378392
HF Energy-114.376948
Nuclear repulsion energy31.284659
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-pVDZ
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 2901 2790 57.11 184.20 0.16 0.28
2 A1 1868 1796 112.84 4.23 0.57 0.73
3 A1 1519 1460 5.43 14.31 0.64 0.78
4 B1 1195 1149 2.07 1.49 0.75 0.86
5 B2 2960 2846 161.87 99.00 0.75 0.86
6 B2 1258 1209 15.49 5.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5850.5 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 5625.3 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-pVDZ
ABC
9.37067 1.29854 1.14049

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.675
C2 0.000 0.000 -0.525
H3 0.000 0.945 -1.125
H4 0.000 -0.945 -1.125

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20022.03252.0325
C21.20021.11891.1189
H32.03251.11891.8895
H42.03251.11891.8895

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.396 O1 C2 H4 122.396
H3 C2 H4 115.209
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.191      
2 C 0.137      
3 H 0.027      
4 H 0.027      


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 -2.120 2.120
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.412 0.000 0.000
y 0.000 -11.497 0.000
z 0.000 0.000 -11.831
Traceless
 xyz
x 0.251 0.000 0.000
y 0.000 0.125 0.000
z 0.000 0.000 -0.377
Polar
3z2-r2-0.754
x2-y20.084
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.104 0.000 0.000
y 0.000 2.136 0.000
z 0.000 0.000 2.733


<r2> (average value of r2) Å2
<r2> 16.847
(<r2>)1/2 4.105