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All results from a given calculation for H2O (Water)

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-75.944568
Energy at 298.15K-75.945665
HF Energy-75.944568
Nuclear repulsion energy8.896611
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 B1B95/3-21G*
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 3496 3339 8.64 90.49 0.21 0.34
2 A1 1694 1617 44.07 13.63 0.46 0.63
3 B2 3643 3479 0.00 42.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4416.6 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 4217.4 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 B1B95/3-21G*
ABC
25.77171 13.63827 8.91859

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.121
H2 0.000 0.783 -0.484
H3 0.000 -0.783 -0.484

Atom - Atom Distances (Å)
  O1 H2 H3
O10.98930.9893
H20.98931.5662
H30.98931.5662

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 104.668
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.666      
2 H 0.333      
3 H 0.333      


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 -2.294 2.294
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.836 0.000 0.000
y 0.000 -4.148 0.000
z 0.000 0.000 -5.811
Traceless
 xyz
x -1.857 0.000 0.000
y 0.000 2.176 0.000
z 0.000 0.000 -0.319
Polar
3z2-r2-0.637
x2-y2-2.688
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.119 0.000 0.000
y 0.000 1.077 0.000
z 0.000 0.000 0.637


<r2> (average value of r2) Å2
<r2> 5.308
(<r2>)1/2 2.304