return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2O (Water)

using model chemistry: LSDA/6-311G**

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/6-311G**
 hartrees
Energy at 0K-76.079492
Energy at 298.15K-76.080586
HF Energy-76.079492
Nuclear repulsion energy9.084682
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/6-311G**
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 3744 3698 5.60      
2 A1 1554 1535 59.36      
3 B2 3852 3804 37.23      

Unscaled Zero Point Vibrational Energy (zpe) 4575.3 cm-1
Scaled (by 0.9877) Zero Point Vibrational Energy (zpe) 4519.0 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/6-311G**
ABC
26.34538 14.38231 9.30343

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.120
H2 0.000 0.763 -0.478
H3 0.000 -0.763 -0.478

Atom - Atom Distances (Å)
  O1 H2 H3
O10.96900.9690
H20.96901.5251
H30.96901.5251

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 103.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.496      
2 H 0.248      
3 H 0.248      


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 -2.124 2.124
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -7.282 0.000 0.000
y 0.000 -4.324 0.000
z 0.000 0.000 -6.108
Traceless
 xyz
x -2.066 0.000 0.000
y 0.000 2.371 0.000
z 0.000 0.000 -0.305
Polar
3z2-r2-0.610
x2-y2-2.959
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.612 0.000 0.000
y 0.000 1.164 0.000
z 0.000 0.000 0.903


<r2> (average value of r2) Å2
<r2> 5.423
(<r2>)1/2 2.329