return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: wB97X-D/daug-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 wB97X-D/daug-cc-pVDZ
 hartrees
Energy at 0K-114.479821
Energy at 298.15K-114.481267
HF Energy-114.479821
Nuclear repulsion energy31.287902
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 wB97X-D/daug-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 2910 2910 72.94 175.60 0.10 0.19
2 A1 1844 1844 116.25 10.03 0.22 0.36
3 A1 1522 1522 11.03 7.72 0.40 0.57
4 B1 1208 1208 6.43 0.16 0.75 0.86
5 B2 2985 2985 108.30 95.54 0.75 0.86
6 B2 1257 1257 12.00 0.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5862.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5862.3 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 wB97X-D/daug-cc-pVDZ
ABC
9.36285 1.29949 1.14111

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/daug-cc-pVDZ

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 0.945 -1.115
H4 0.000 -0.945 -1.115

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20292.02382.0238
C21.20291.11241.1124
H32.02381.11241.8902
H42.02381.11241.8902

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.830 O1 C2 H4 121.830
H3 C2 H4 116.339
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.340      
2 C 0.968      
3 H -0.314      
4 H -0.314      


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 -2.451 2.451
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.668 0.000 0.000
y 0.000 -11.562 0.000
z 0.000 0.000 -12.245
Traceless
 xyz
x 0.235 0.000 0.000
y 0.000 0.395 0.000
z 0.000 0.000 -0.630
Polar
3z2-r2-1.259
x2-y2-0.107
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.950 0.000 0.000
y 0.000 2.701 0.000
z 0.000 0.000 3.339


<r2> (average value of r2) Å2
<r2> 16.974
(<r2>)1/2 4.120