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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBEultrafine/SDD

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/SDD
 hartrees
Energy at 0K-114.354458
Energy at 298.15K-114.355888
HF Energy-114.354458
Nuclear repulsion energy30.363997
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/SDD
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 2870 2870 83.79      
2 A1 1655 1655 58.02      
3 A1 1490 1490 13.84      
4 B1 1159 1159 18.92      
5 B2 2937 2937 156.14      
6 B2 1215 1215 2.97      

Unscaled Zero Point Vibrational Energy (zpe) 5662.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5662.8 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/SDD
ABC
9.32735 1.20999 1.07105

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.699
C2 0.000 0.000 -0.551
H3 0.000 0.947 -1.145
H4 0.000 -0.947 -1.145

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.25002.07302.0730
C21.25001.11791.1179
H32.07301.11791.8938
H42.07301.11791.8938

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.105 O1 C2 H4 122.105
H3 C2 H4 115.791
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.173      
2 C -0.187      
3 H 0.180      
4 H 0.180      


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 -2.588 2.588
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.711 0.000 0.000
y 0.000 -11.408 0.000
z 0.000 0.000 -12.223
Traceless
 xyz
x 0.105 0.000 0.000
y 0.000 0.559 0.000
z 0.000 0.000 -0.664
Polar
3z2-r2-1.327
x2-y2-0.302
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.985 0.000 0.000
y 0.000 1.812 0.000
z 0.000 0.000 2.756


<r2> (average value of r2) Å2
<r2> 17.505
(<r2>)1/2 4.184