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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3LYPultrafine/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/STO-3G
 hartrees
Energy at 0K-112.957314
Energy at 298.15K-112.958719
HF Energy-112.957314
Nuclear repulsion energy30.286614
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 B3LYPultrafine/STO-3G
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 3139 2801 2.48      
2 A1 1858 1658 6.51      
3 A1 1620 1445 2.62      
4 B1 1132 1010 7.74      
5 B2 3256 2905 49.13      
6 B2 1274 1137 15.67      

Unscaled Zero Point Vibrational Energy (zpe) 6138.9 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 5478.4 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 B3LYPultrafine/STO-3G
ABC
9.44599 1.19949 1.06434

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.702
C2 0.000 0.000 -0.548
H3 0.000 0.941 -1.165
H4 0.000 -0.941 -1.165

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.25062.09082.0908
C21.25061.12501.1250
H32.09081.12501.8819
H42.09081.12501.8819

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 123.234 O1 C2 H4 123.234
H3 C2 H4 113.531
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.151      
2 C 0.021      
3 H 0.065      
4 H 0.065      


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 -1.352 1.352
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.467 0.000 0.000
y 0.000 -10.515 0.000
z 0.000 0.000 -11.070
Traceless
 xyz
x 0.326 0.000 0.000
y 0.000 0.254 0.000
z 0.000 0.000 -0.579
Polar
3z2-r2-1.159
x2-y20.048
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.396 0.000 0.000
y 0.000 0.941 0.000
z 0.000 0.000 1.564


<r2> (average value of r2) Å2
<r2> 16.907
(<r2>)1/2 4.112