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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3PW91/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/LANL2DZ
 hartrees
Energy at 0K-114.436948
Energy at 298.15K-114.438388
HF Energy-114.436948
Nuclear repulsion energy30.668825
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 B3PW91/LANL2DZ
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 2979 2851 75.20      
2 A1 1719 1646 66.35      
3 A1 1537 1471 15.75      
4 B1 1202 1151 16.84      
5 B2 3058 2927 134.61      
6 B2 1254 1200 5.29      

Unscaled Zero Point Vibrational Energy (zpe) 5873.5 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 5622.7 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 B3PW91/LANL2DZ
ABC
9.50007 1.23482 1.09278

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.692
C2 0.000 0.000 -0.546
H3 0.000 0.938 -1.131
H4 0.000 -0.938 -1.131

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.23812.05052.0505
C21.23811.10581.1058
H32.05051.10581.8765
H42.05051.10581.8765

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.948 O1 C2 H4 121.948
H3 C2 H4 116.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.215      
2 C -0.142      
3 H 0.178      
4 H 0.178      


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 -2.752 2.752
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.639 0.000 0.000
y 0.000 -11.297 0.000
z 0.000 0.000 -12.228
Traceless
 xyz
x 0.123 0.000 0.000
y 0.000 0.637 0.000
z 0.000 0.000 -0.760
Polar
3z2-r2-1.519
x2-y2-0.343
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.948 0.000 0.000
y 0.000 1.723 0.000
z 0.000 0.000 2.700


<r2> (average value of r2) Å2
<r2> 17.262
(<r2>)1/2 4.155