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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B2PLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G**
 hartrees
Energy at 0K-114.394162
Energy at 298.15K-114.395609
HF Energy-114.289009
Nuclear repulsion energy31.161191
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 B2PLYP/6-31G**
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 2958 2958 54.64 152.77 0.16 0.28
2 A1 1820 1820 80.59 2.06 0.35 0.52
3 A1 1571 1571 7.00 15.65 0.59 0.74
4 B1 1210 1210 1.61 1.97 0.75 0.86
5 B2 3022 3022 152.18 75.80 0.75 0.86
6 B2 1285 1285 12.06 6.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5933.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5933.2 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 B2PLYP/6-31G**
ABC
9.59244 1.28051 1.12970

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.680
C2 0.000 0.000 -0.532
H3 0.000 0.934 -1.123
H4 0.000 -0.934 -1.123

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21182.03022.0302
C21.21181.10501.1050
H32.03021.10501.8675
H42.03021.10501.8675

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.329 O1 C2 H4 122.329
H3 C2 H4 115.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.342      
2 C 0.175      
3 H 0.083      
4 H 0.083      


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 -2.221 2.221
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.439 0.000 0.000
y 0.000 -11.578 0.000
z 0.000 0.000 -11.974
Traceless
 xyz
x 0.337 0.000 0.000
y 0.000 0.129 0.000
z 0.000 0.000 -0.465
Polar
3z2-r2-0.930
x2-y20.139
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.022 0.000 0.000
y 0.000 2.078 0.000
z 0.000 0.000 2.741


<r2> (average value of r2) Å2
<r2> 16.943
(<r2>)1/2 4.116