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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3PW91/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 B3PW91/cc-pVQZ
 hartrees
Energy at 0K-114.510330
Energy at 298.15K-114.511775
HF Energy-114.510330
Nuclear repulsion energy31.453814
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/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 2881 2881 71.93      
2 A1 1838 1838 110.70      
3 A1 1529 1529 10.14      
4 B1 1201 1201 4.07      
5 B2 2937 2937 129.29      
6 B2 1266 1266 12.11      

Unscaled Zero Point Vibrational Energy (zpe) 5826.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5826.5 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/cc-pVQZ
ABC
9.48987 1.31239 1.15295

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.671
C2 0.000 0.000 -0.524
H3 0.000 0.939 -1.113
H4 0.000 -0.939 -1.113

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19582.01612.0161
C21.19581.10791.1079
H32.01611.10791.8775
H42.01611.10791.8775

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.078 O1 C2 H4 122.078
H3 C2 H4 115.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.306      
2 C 0.238      
3 H 0.034      
4 H 0.034      


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 -2.307 2.307
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.589 0.000 0.000
y 0.000 -11.533 0.000
z 0.000 0.000 -12.162
Traceless
 xyz
x 0.259 0.000 0.000
y 0.000 0.343 0.000
z 0.000 0.000 -0.601
Polar
3z2-r2-1.203
x2-y2-0.056
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.676 0.000 0.000
y 0.000 2.524 0.000
z 0.000 0.000 3.158


<r2> (average value of r2) Å2
<r2> 16.841
(<r2>)1/2 4.104