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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-114.493522
Energy at 298.15K-114.494955
HF Energy-114.493522
Nuclear repulsion energy30.892363
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-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 2789 2783 81.21 205.05 0.11 0.20
2 A1 1724 1721 99.41 8.07 0.39 0.56
3 A1 1472 1469 11.70 9.37 0.45 0.62
4 B1 1150 1148 6.30 0.52 0.75 0.86
5 B2 2845 2840 141.75 140.72 0.75 0.86
6 B2 1208 1206 8.75 1.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5594.1 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 5583.5 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 BLYP/aug-cc-pVDZ
ABC
9.20261 1.26475 1.11193

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/aug-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 -0.536
H3 0.000 0.953 -1.129
H4 0.000 -0.953 -1.129

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21962.04852.0485
C21.21961.12301.1230
H32.04851.12301.9066
H42.04851.12301.9066

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.909 O1 C2 H4 121.909
H3 C2 H4 116.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.310      
2 C 0.930      
3 H -0.310      
4 H -0.310      


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 -2.300 2.300
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.871 0.000 0.000
y 0.000 -11.943 0.000
z 0.000 0.000 -12.678
Traceless
 xyz
x 0.439 0.000 0.000
y 0.000 0.332 0.000
z 0.000 0.000 -0.771
Polar
3z2-r2-1.542
x2-y20.072
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.943 0.000 0.000
y 0.000 2.872 0.000
z 0.000 0.000 3.582


<r2> (average value of r2) Å2
<r2> 17.429
(<r2>)1/2 4.175