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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3LYP/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 B3LYP/TZVP
 hartrees
Energy at 0K-114.549254
Energy at 298.15K-114.550701
HF Energy-114.549254
Nuclear repulsion energy31.360038
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 B3LYP/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 2885 2786 65.07 185.41 0.17 0.28
2 A1 1821 1758 113.09 6.67 0.46 0.63
3 A1 1545 1491 10.32 12.74 0.60 0.75
4 B1 1211 1169 3.00 2.25 0.75 0.86
5 B2 2943 2842 144.02 98.51 0.75 0.86
6 B2 1274 1230 10.18 5.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5839.5 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 5637.5 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 B3LYP/TZVP
ABC
9.49261 1.30301 1.14574

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

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 -0.527
H3 0.000 0.939 -1.114
H4 0.000 -0.939 -1.114

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20092.01972.0197
C21.20091.10731.1073
H32.01971.10731.8773
H42.01971.10731.8773

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.039 O1 C2 H4 122.039
H3 C2 H4 115.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.264      
2 C 0.112      
3 H 0.076      
4 H 0.076      


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 -2.384 2.384
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.669 0.000 0.000
y 0.000 -11.706 0.000
z 0.000 0.000 -12.404
Traceless
 xyz
x 0.386 0.000 0.000
y 0.000 0.330 0.000
z 0.000 0.000 -0.716
Polar
3z2-r2-1.432
x2-y20.037
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.311 0.000 0.000
y 0.000 2.264 0.000
z 0.000 0.000 3.117


<r2> (average value of r2) Å2
<r2> 16.995
(<r2>)1/2 4.122