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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBE/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 PBEPBE/aug-cc-pVQZ
 hartrees
Energy at 0K-114.425855
Energy at 298.15K-114.427288
HF Energy-114.425855
Nuclear repulsion energy31.153700
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/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 2790 2790 81.78      
2 A1 1763 1763 104.49      
3 A1 1480 1480 9.38      
4 B1 1149 1149 6.21      
5 B2 2834 2834 140.72      
6 B2 1221 1221 8.98      

Unscaled Zero Point Vibrational Energy (zpe) 5618.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5618.8 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/aug-cc-pVQZ
ABC
9.32004 1.28721 1.13100

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

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 -0.530
H3 0.000 0.947 -1.123
H4 0.000 -0.947 -1.123

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20772.03482.0348
C21.20771.11761.1176
H32.03481.11761.8946
H42.03481.11761.8946

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.049 O1 C2 H4 122.049
H3 C2 H4 115.902
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.505      
2 C -0.400      
3 H 0.452      
4 H 0.452      


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 -2.224 2.224
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.807 0.000 0.000
y 0.000 -11.795 0.000
z 0.000 0.000 -12.457
Traceless
 xyz
x 0.319 0.000 0.000
y 0.000 0.337 0.000
z 0.000 0.000 -0.655
Polar
3z2-r2-1.311
x2-y2-0.012
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.020 0.000 0.000
y 0.000 2.931 0.000
z 0.000 0.000 3.527


<r2> (average value of r2) Å2
<r2> 17.185
(<r2>)1/2 4.145