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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-114.387392
Energy at 298.15K-114.388838
HF Energy-114.285968
Nuclear repulsion energy31.153497
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 2969 2819 55.05 152.23 0.17 0.29
2 A1 1822 1729 82.29 1.91 0.35 0.52
3 A1 1576 1496 6.86 16.03 0.59 0.74
4 B1 1208 1146 1.69 2.13 0.75 0.86
5 B2 3028 2874 154.83 75.66 0.75 0.86
6 B2 1289 1223 11.54 7.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5945.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 5643.7 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
9.57168 1.28031 1.12926

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 0.935 -1.123
H4 0.000 -0.935 -1.123

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21192.03092.0309
C21.21191.10601.1060
H32.03091.10601.8695
H42.03091.10601.8695

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.310 O1 C2 H4 122.310
H3 C2 H4 115.380
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 -0.327      
2 C 0.073      
3 H 0.127      
4 H 0.127      


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 -2.238 2.238
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.458 0.000 0.000
y 0.000 -11.584 0.000
z 0.000 0.000 -11.952
Traceless
 xyz
x 0.310 0.000 0.000
y 0.000 0.121 0.000
z 0.000 0.000 -0.431
Polar
3z2-r2-0.862
x2-y20.127
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.991 0.000 0.000
y 0.000 2.063 0.000
z 0.000 0.000 2.721


<r2> (average value of r2) Å2
<r2> 16.949
(<r2>)1/2 4.117