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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/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 BLYP/TZVP
 hartrees
Energy at 0K-114.523732
Energy at 298.15K-114.525170
HF Energy-114.523732
Nuclear repulsion energy31.062387
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 BLYP/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 2786 2779 73.48 203.21 0.17 0.28
2 A1 1743 1738 101.61 5.55 0.54 0.70
3 A1 1502 1498 10.17 13.95 0.61 0.76
4 B1 1167 1164 3.39 3.03 0.75 0.86
5 B2 2831 2824 173.77 117.59 0.75 0.86
6 B2 1236 1233 7.74 7.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5632.0 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 5617.9 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 BLYP/TZVP
ABC
9.35954 1.27710 1.12376

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

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 -0.532
H3 0.000 0.945 -1.126
H4 0.000 -0.945 -1.126

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21302.03892.0389
C21.21301.11621.1162
H32.03891.11621.8906
H42.03891.11621.8906

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.124 O1 C2 H4 122.124
H3 C2 H4 115.752
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.240      
2 C 0.085      
3 H 0.077      
4 H 0.077      


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 -2.258 2.258
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.768 0.000 0.000
y 0.000 -11.888 0.000
z 0.000 0.000 -12.543
Traceless
 xyz
x 0.448 0.000 0.000
y 0.000 0.268 0.000
z 0.000 0.000 -0.715
Polar
3z2-r2-1.431
x2-y20.120
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.352 0.000 0.000
y 0.000 2.407 0.000
z 0.000 0.000 3.249


<r2> (average value of r2) Å2
<r2> 17.265
(<r2>)1/2 4.155