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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: LSDA/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 LSDA/cc-pVTZ
 hartrees
Energy at 0K-113.948241
Energy at 298.15K-113.949675
HF Energy-113.948241
Nuclear repulsion energy31.333386
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 LSDA/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 2780 2749 68.53      
2 A1 1820 1800 103.11      
3 A1 1468 1452 7.28      
4 B1 1149 1136 4.40      
5 B2 2828 2797 145.81      
6 B2 1219 1206 9.13      

Unscaled Zero Point Vibrational Energy (zpe) 5631.7 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 5570.3 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 LSDA/cc-pVTZ
ABC
9.28341 1.30594 1.14488

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.673
C2 0.000 0.000 -0.524
H3 0.000 0.949 -1.120
H4 0.000 -0.949 -1.120

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19732.02872.0287
C21.19731.12051.1205
H32.02871.12051.8983
H42.02871.12051.8983

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.107 O1 C2 H4 122.107
H3 C2 H4 115.785
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.191      
2 C 0.109      
3 H 0.041      
4 H 0.041      


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 -2.159 2.159
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.724 0.000 0.000
y 0.000 -11.703 0.000
z 0.000 0.000 -12.238
Traceless
 xyz
x 0.247 0.000 0.000
y 0.000 0.278 0.000
z 0.000 0.000 -0.524
Polar
3z2-r2-1.049
x2-y2-0.021
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.506 0.000 0.000
y 0.000 2.546 0.000
z 0.000 0.000 3.107


<r2> (average value of r2) Å2
<r2> 17.008
(<r2>)1/2 4.124