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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/aug-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 BLYP/aug-cc-pVQZ
 hartrees
Energy at 0K-114.535262
Energy at 298.15K-114.536697
HF Energy-114.535262
Nuclear repulsion energy31.124188
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 BLYP/aug-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 2784 2784 83.32      
2 A1 1738 1738 105.45      
3 A1 1492 1492 11.29      
4 B1 1155 1155 5.65      
5 B2 2827 2827 143.62      
6 B2 1229 1229 9.48      

Unscaled Zero Point Vibrational Energy (zpe) 5612.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5612.2 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 BLYP/aug-cc-pVQZ
ABC
9.37581 1.28278 1.12840

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.679
C2 0.000 0.000 -0.531
H3 0.000 0.944 -1.123
H4 0.000 -0.944 -1.123

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21052.03452.0345
C21.21051.11441.1144
H32.03451.11441.8889
H42.03451.11441.8889

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.058 O1 C2 H4 122.058
H3 C2 H4 115.884
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.509      
2 C -0.217      
3 H 0.363      
4 H 0.363      


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 -2.274 2.274
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.861 0.000 0.000
y 0.000 -11.898 0.000
z 0.000 0.000 -12.583
Traceless
 xyz
x 0.380 0.000 0.000
y 0.000 0.323 0.000
z 0.000 0.000 -0.703
Polar
3z2-r2-1.406
x2-y20.038
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.037 0.000 0.000
y 0.000 2.940 0.000
z 0.000 0.000 3.564


<r2> (average value of r2) Å2
<r2> 17.255
(<r2>)1/2 4.154