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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: TPSSh/aug-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 TPSSh/aug-cc-pCVTZ
 hartrees
Energy at 0K-114.551932
Energy at 298.15K 
HF Energy-114.551932
Nuclear repulsion energy31.312483
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 TPSSh/aug-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 2882 2882 74.51 189.21 0.11 0.19
2 A1 1800 1800 106.76 8.41 0.28 0.44
3 A1 1533 1533 11.90 9.22 0.40 0.57
4 B1 1194 1194 6.31 0.26 0.75 0.86
5 B2 2938 2938 124.88 112.10 0.75 0.86
6 B2 1261 1261 11.31 1.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5803.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5803.9 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 TPSSh/aug-cc-pCVTZ
ABC
9.46854 1.29901 1.14230

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.675
C2 0.000 0.000 -0.529
H3 0.000 0.940 -1.114
H4 0.000 -0.940 -1.114

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20362.02052.0205
C21.20361.10701.1070
H32.02051.10701.8797
H42.02051.10701.8797

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.901 O1 C2 H4 121.901
H3 C2 H4 116.197
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.458      
2 C -0.231      
3 H 0.344      
4 H 0.344      


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 -2.335 2.335
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.926 0.000 0.000
y 0.000 2.732 0.000
z 0.000 0.000 3.373


<r2> (average value of r2) Å2
<r2> 16.971
(<r2>)1/2 4.120