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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3LYPultrafine/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/CEP-121G*
 hartrees
Energy at 0K-22.806519
Energy at 298.15K-22.807961
HF Energy-22.806519
Nuclear repulsion energy17.658055
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 B3LYPultrafine/CEP-121G*
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 2890 2801 74.38      
2 A1 1790 1736 109.34      
3 A1 1537 1490 10.46      
4 B1 1194 1158 3.31      
5 B2 2954 2863 173.03      
6 B2 1263 1225 12.31      

Unscaled Zero Point Vibrational Energy (zpe) 5814.2 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 5636.3 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 B3LYPultrafine/CEP-121G*
ABC
9.40948 1.27499 1.12284

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.681
C2 0.000 0.000 -0.534
H3 0.000 0.943 -1.124
H4 0.000 -0.943 -1.124

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21482.03682.0368
C21.21481.11251.1125
H32.03681.11251.8856
H42.03681.11251.8856

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.066 O1 C2 H4 122.066
H3 C2 H4 115.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.234      
2 C -0.011      
3 H 0.123      
4 H 0.123      


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 -2.348 2.348
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.642 0.000 0.000
y 0.000 -11.592 0.000
z 0.000 0.000 -12.073
Traceless
 xyz
x 0.191 0.000 0.000
y 0.000 0.265 0.000
z 0.000 0.000 -0.457
Polar
3z2-r2-0.913
x2-y2-0.050
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.225 0.000 0.000
y 0.000 2.241 0.000
z 0.000 0.000 3.018


<r2> (average value of r2) Å2
<r2> 15.579
(<r2>)1/2 3.947