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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HF/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-113.910501
Energy at 298.15K-113.911967
HF Energy-113.910501
Nuclear repulsion energy31.899987
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 HF/TZVP
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 3099 2816 56.49 150.62 0.18 0.31
2 A1 2000 1817 162.00 12.83 0.29 0.46
3 A1 1665 1512 15.96 11.08 0.58 0.74
4 B1 1342 1220 0.82 0.66 0.75 0.86
5 B2 3172 2882 114.95 68.34 0.75 0.86
6 B2 1379 1253 20.44 3.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6328.4 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 5750.0 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 HF/TZVP
ABC
9.73012 1.35079 1.18613

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.662
C2 0.000 0.000 -0.517
H3 0.000 0.927 -1.096
H4 0.000 -0.927 -1.096

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.17901.98741.9874
C21.17901.09301.0930
H31.98741.09301.8542
H41.98741.09301.8542

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.983 O1 C2 H4 121.983
H3 C2 H4 116.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.355      
2 C 0.258      
3 H 0.048      
4 H 0.048      


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 -2.752 2.752
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.541 0.000 0.000
y 0.000 -11.454 0.000
z 0.000 0.000 -12.234
Traceless
 xyz
x 0.303 0.000 0.000
y 0.000 0.433 0.000
z 0.000 0.000 -0.737
Polar
3z2-r2-1.473
x2-y2-0.087
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.221 0.000 0.000
y 0.000 1.992 0.000
z 0.000 0.000 2.907


<r2> (average value of r2) Å2
<r2> 16.565
(<r2>)1/2 4.070