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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B1B95/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/cc-pVQZ
 hartrees
Energy at 0K-114.508559
Energy at 298.15K-114.510005
HF Energy-114.508559
Nuclear repulsion energy31.545130
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 B1B95/cc-pVQZ
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 2906 2906 69.79      
2 A1 1857 1857 113.33      
3 A1 1537 1537 9.64      
4 B1 1207 1207 3.86      
5 B2 2967 2967 125.01      
6 B2 1272 1272 13.02      

Unscaled Zero Point Vibrational Energy (zpe) 5873.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5873.2 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 B1B95/cc-pVQZ
ABC
9.54141 1.32018 1.15971

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.669
C2 0.000 0.000 -0.523
H3 0.000 0.936 -1.108
H4 0.000 -0.936 -1.108

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19272.00922.0092
C21.19271.10401.1040
H32.00921.10401.8725
H42.00921.10401.8725

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.001 O1 C2 H4 122.001
H3 C2 H4 115.998
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.307      
2 C 0.258      
3 H 0.025      
4 H 0.025      


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 -2.313 2.313
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.585 0.000 0.000
y 0.000 -11.528 0.000
z 0.000 0.000 -12.153
Traceless
 xyz
x 0.256 0.000 0.000
y 0.000 0.341 0.000
z 0.000 0.000 -0.596
Polar
3z2-r2-1.193
x2-y2-0.057
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.661 0.000 0.000
y 0.000 2.498 0.000
z 0.000 0.000 3.125


<r2> (average value of r2) Å2
<r2> 16.780
(<r2>)1/2 4.096