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: B3LYPultrafine/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/6-311G*
 hartrees
Energy at 0K-114.533370
Energy at 298.15K-114.534814
HF Energy-114.533370
Nuclear repulsion energy31.364809
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 B3LYPultrafine/6-311G*
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 2881 2784 69.54 172.71 0.18 0.31
2 A1 1834 1772 113.72 4.27 0.59 0.74
3 A1 1549 1497 8.14 14.12 0.64 0.78
4 B1 1193 1152 2.32 1.74 0.75 0.86
5 B2 2932 2833 182.35 99.48 0.75 0.86
6 B2 1281 1238 14.95 5.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5834.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 5638.2 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 B3LYPultrafine/6-311G*
ABC
9.47200 1.30397 1.14618

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.674
C2 0.000 0.000 -0.526
H3 0.000 0.940 -1.117
H4 0.000 -0.940 -1.117

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19962.02182.0218
C21.19961.10981.1098
H32.02181.10981.8793
H42.02181.10981.8793

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.146 O1 C2 H4 122.146
H3 C2 H4 115.707
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.251      
2 C -0.073      
3 H 0.162      
4 H 0.162      


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 -2.241 2.241
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.587 0.000 0.000
y 0.000 -11.572 0.000
z 0.000 0.000 -12.083
Traceless
 xyz
x 0.240 0.000 0.000
y 0.000 0.264 0.000
z 0.000 0.000 -0.503
Polar
3z2-r2-1.007
x2-y2-0.016
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.122 0.000 0.000
y 0.000 2.118 0.000
z 0.000 0.000 2.810


<r2> (average value of r2) Å2
<r2> 16.887
(<r2>)1/2 4.109