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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-114.462106
Energy at 298.15K-114.463550
HF Energy-114.462106
Nuclear repulsion energy31.326081
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 B1B95/6-31+G**
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 2943 2815 62.14 158.13 0.17 0.29
2 A1 1859 1779 117.68 9.18 0.29 0.45
3 A1 1542 1475 6.05 12.65 0.58 0.73
4 B1 1201 1149 4.81 1.28 0.75 0.86
5 B2 3013 2882 122.20 102.29 0.75 0.86
6 B2 1268 1213 10.30 3.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5912.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 5656.3 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 B1B95/6-31+G**
ABC
9.48131 1.30004 1.14328

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

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 0.939 -1.112
H4 0.000 -0.939 -1.112

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20342.01872.0187
C21.20341.10571.1057
H32.01871.10571.8784
H42.01871.10571.8784

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.851 O1 C2 H4 121.851
H3 C2 H4 116.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.314      
2 C 0.076      
3 H 0.119      
4 H 0.119      


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 -2.493 2.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.678 0.000 0.000
y 0.000 -11.616 0.000
z 0.000 0.000 -12.271
Traceless
 xyz
x 0.265 0.000 0.000
y 0.000 0.359 0.000
z 0.000 0.000 -0.624
Polar
3z2-r2-1.248
x2-y2-0.063
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.310 0.000 0.000
y 0.000 2.271 0.000
z 0.000 0.000 3.110


<r2> (average value of r2) Å2
<r2> 16.961
(<r2>)1/2 4.118