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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B2PLYP/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-114.481309
Energy at 298.15K-114.482755
HF Energy-114.343062
Nuclear repulsion energy31.367360
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/cc-pVQZ
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 2926 2799 69.94      
2 A1 1792 1715 90.72      
3 A1 1544 1477 11.68      
4 B1 1208 1156 4.06      
5 B2 2988 2859 117.71      
6 B2 1275 1220 11.34      

Unscaled Zero Point Vibrational Energy (zpe) 5866.0 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 5612.6 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/cc-pVQZ
ABC
9.56356 1.30187 1.14588

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.674
C2 0.000 0.000 -0.528
H3 0.000 0.935 -1.111
H4 0.000 -0.935 -1.111

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20262.01572.0157
C21.20261.10201.1020
H32.01571.10201.8703
H42.01571.10201.8703

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.945 O1 C2 H4 121.945
H3 C2 H4 116.110
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.347      
2 C 0.309      
3 H 0.019      
4 H 0.019      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.670 0.000 0.000
y 0.000 2.485 0.000
z 0.000 0.000 3.164


<r2> (average value of r2) Å2
<r2> 16.898
(<r2>)1/2 4.111