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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/aug-cc-pCVTZ

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/aug-cc-pCVTZ
 hartrees
Energy at 0K-114.529503
Energy at 298.15K 
HF Energy-114.529503
Nuclear repulsion energy31.090834
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/aug-cc-pCVTZ
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 2785 2785 82.22 207.83 0.11 0.19
2 A1 1734 1734 104.66 7.37 0.38 0.55
3 A1 1488 1488 11.22 9.85 0.42 0.59
4 B1 1152 1152 5.82 0.52 0.75 0.86
5 B2 2830 2830 141.84 139.16 0.75 0.86
6 B2 1225 1225 9.33 1.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5607.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5607.1 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/aug-cc-pCVTZ
ABC
9.36438 1.27983 1.12595

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.680
C2 0.000 0.000 -0.532
H3 0.000 0.945 -1.123
H4 0.000 -0.945 -1.123

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21222.03562.0356
C21.21221.11451.1145
H32.03561.11451.8901
H42.03561.11451.8901

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.009 O1 C2 H4 122.009
H3 C2 H4 115.983
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.455      
2 C -0.371      
3 H 0.413      
4 H 0.413      


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 -2.282 2.282
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.864 0.000 0.000
y 0.000 -11.895 0.000
z 0.000 0.000 -12.591
Traceless
 xyz
x 0.379 0.000 0.000
y 0.000 0.332 0.000
z 0.000 0.000 -0.712
Polar
3z2-r2-1.423
x2-y20.031
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.016 0.000 0.000
y 0.000 2.916 0.000
z 0.000 0.000 3.559


<r2> (average value of r2) Å2
<r2> 17.275
(<r2>)1/2 4.156