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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBE/aug-cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-114.388049
Energy at 298.15K-114.389481
HF Energy-114.388049
Nuclear repulsion energy30.944377
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-pVDZ
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 2801 2784 80.61 204.81 0.11 0.20
2 A1 1752 1741 99.23 8.28 0.37 0.54
3 A1 1465 1456 9.82 8.60 0.45 0.62
4 B1 1147 1140 6.71 0.51 0.75 0.86
5 B2 2859 2842 138.76 136.92 0.75 0.86
6 B2 1204 1196 8.30 1.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5613.9 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 5579.6 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-pVDZ
ABC
9.18204 1.27041 1.11600

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.682
C2 0.000 0.000 -0.534
H3 0.000 0.954 -1.128
H4 0.000 -0.954 -1.128

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21632.04692.0469
C21.21631.12441.1244
H32.04691.12441.9088
H42.04691.12441.9088

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.920 O1 C2 H4 121.920
H3 C2 H4 116.159
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.339      
2 C 0.732      
3 H -0.197      
4 H -0.197      


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 -2.251 2.251
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.817 0.000 0.000
y 0.000 -11.838 0.000
z 0.000 0.000 -12.546
Traceless
 xyz
x 0.375 0.000 0.000
y 0.000 0.344 0.000
z 0.000 0.000 -0.719
Polar
3z2-r2-1.437
x2-y20.021
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.928 0.000 0.000
y 0.000 2.856 0.000
z 0.000 0.000 3.540


<r2> (average value of r2) Å2
<r2> 17.341
(<r2>)1/2 4.164