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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/cc-pVDZ
 hartrees
Energy at 0K-114.478428
Energy at 298.15K-114.479860
HF Energy-114.478428
Nuclear repulsion energy30.902148
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 BLYP/cc-pVDZ
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 2753 2757 68.25 201.58 0.17 0.28
2 A1 1757 1760 97.98 2.83 0.66 0.79
3 A1 1473 1476 5.02 17.38 0.67 0.81
4 B1 1141 1143 1.32 2.46 0.75 0.86
5 B2 2787 2791 219.12 120.60 0.75 0.86
6 B2 1215 1217 13.30 7.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5562.9 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 5571.8 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 BLYP/cc-pVDZ
ABC
9.22580 1.26460 1.11215

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.684
C2 0.000 0.000 -0.531
H3 0.000 0.952 -1.142
H4 0.000 -0.952 -1.142

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21552.05912.0591
C21.21551.13091.1309
H32.05911.13091.9042
H42.05911.13091.9042

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.658 O1 C2 H4 122.658
H3 C2 H4 114.684
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.151      
2 C 0.158      
3 H -0.004      
4 H -0.004      


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 -1.891 1.891
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.448 0.000 0.000
y 0.000 -11.732 0.000
z 0.000 0.000 -12.011
Traceless
 xyz
x 0.423 0.000 0.000
y 0.000 -0.003 0.000
z 0.000 0.000 -0.421
Polar
3z2-r2-0.842
x2-y20.284
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.119 0.000 0.000
y 0.000 2.298 0.000
z 0.000 0.000 2.855


<r2> (average value of r2) Å2
<r2> 17.185
(<r2>)1/2 4.145