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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: TPSSh/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/cc-pCVTZ
 hartrees
Energy at 0K-114.549419
Energy at 298.15K 
HF Energy-114.549419
Nuclear repulsion energy31.326464
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/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 2874 2874 69.13 184.44 0.14 0.24
2 A1 1808 1808 100.51 4.95 0.55 0.71
3 A1 1538 1538 9.93 11.78 0.53 0.70
4 B1 1199 1199 3.71 0.95 0.75 0.86
5 B2 2926 2926 148.06 100.58 0.75 0.86
6 B2 1265 1265 12.31 3.77 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5805.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5805.0 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/cc-pCVTZ
ABC
9.48725 1.29980 1.14318

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/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 -0.528
H3 0.000 0.939 -1.116
H4 0.000 -0.939 -1.116

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20242.02182.0218
C21.20241.10801.1080
H32.02181.10801.8778
H42.02181.10801.8778

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.068 O1 C2 H4 122.068
H3 C2 H4 115.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.270      
2 C 0.191      
3 H 0.040      
4 H 0.040      


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 -2.237 2.237
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 1.480 0.000 0.000
y 0.000 2.388 0.000
z 0.000 0.000 3.044


<r2> (average value of r2) Å2
<r2> 16.885
(<r2>)1/2 4.109