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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBE/cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/cc-pCVTZ
 hartrees
Energy at 0K-114.417119
Energy at 298.15K 
HF Energy-114.417119
Nuclear repulsion energy31.140928
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 PBEPBE/cc-pCVTZ
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 2779 2779 74.87 198.74 0.14 0.25
2 A1 1771 1771 95.31 4.83 0.64 0.78
3 A1 1484 1484 7.52 12.21 0.57 0.72
4 B1 1153 1153 3.43 1.65 0.75 0.86
5 B2 2820 2820 168.60 116.67 0.75 0.86
6 B2 1223 1223 9.52 4.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5615.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5615.3 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 PBEPBE/cc-pCVTZ
ABC
9.33471 1.28543 1.12985

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.678
C2 0.000 0.000 -0.529
H3 0.000 0.947 -1.126
H4 0.000 -0.947 -1.126

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20782.03762.0376
C21.20781.11891.1189
H32.03761.11891.8931
H42.03761.11891.8931

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.225 O1 C2 H4 122.225
H3 C2 H4 115.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.235      
2 C 0.111      
3 H 0.062      
4 H 0.062      


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 -2.106 2.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.665 0.000 0.000
y 0.000 -11.725 0.000
z 0.000 0.000 -12.202
Traceless
 xyz
x 0.299 0.000 0.000
y 0.000 0.209 0.000
z 0.000 0.000 -0.507
Polar
3z2-r2-1.015
x2-y20.060
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.507 0.000 0.000
y 0.000 2.530 0.000
z 0.000 0.000 3.133


<r2> (average value of r2) Å2
<r2> 17.101
(<r2>)1/2 4.135