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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-114.463310
Energy at 298.15K-114.464757
HF Energy-114.333356
Nuclear repulsion energy31.333675
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 B2PLYP/cc-pVTZ
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 2923 2804 68.33 180.81 0.14 0.24
2 A1 1797 1724 87.08 4.08 0.51 0.68
3 A1 1547 1484 10.46 12.65 0.51 0.67
4 B1 1209 1160 3.48 0.95 0.75 0.86
5 B2 2983 2862 133.69 95.91 0.75 0.86
6 B2 1276 1224 11.84 3.65 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5867.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 5628.8 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 B2PLYP/cc-pVTZ
ABC
9.57321 1.29820 1.14317

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

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 -0.529
H3 0.000 0.935 -1.114
H4 0.000 -0.935 -1.114

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20382.01892.0189
C21.20381.10301.1030
H32.01891.10301.8694
H42.01891.10301.8694

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.071 O1 C2 H4 122.071
H3 C2 H4 115.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.237      
2 C 0.139      
3 H 0.049      
4 H 0.049      


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 -2.290 2.290
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.644 0.000 0.000
y 0.000 -11.661 0.000
z 0.000 0.000 -12.157
Traceless
 xyz
x 0.265 0.000 0.000
y 0.000 0.239 0.000
z 0.000 0.000 -0.504
Polar
3z2-r2-1.009
x2-y20.018
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.465 0.000 0.000
y 0.000 2.333 0.000
z 0.000 0.000 3.010


<r2> (average value of r2) Å2
<r2> 16.934
(<r2>)1/2 4.115