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All results from a given calculation for H2O (Water)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-76.398818
Energy at 298.15K-76.399915
HF Energy-76.398818
Nuclear repulsion energy9.169400
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 B3PW91/6-31G(2df,p)
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 3843 3695 3.99 65.03 0.16 0.27
2 A1 1670 1606 74.61 3.72 0.58 0.73
3 B2 3951 3798 34.20 28.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4732.3 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 4549.6 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 B3PW91/6-31G(2df,p)
ABC
26.80883 14.66134 9.47798

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.119
H2 0.000 0.755 -0.474
H3 0.000 -0.755 -0.474

Atom - Atom Distances (Å)
  O1 H2 H3
O10.96010.9601
H20.96011.5105
H30.96011.5105

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 103.755
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.622      
2 H 0.311      
3 H 0.311      


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 -1.870 1.870
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -7.118 0.000 0.000
y 0.000 -4.235 0.000
z 0.000 0.000 -5.900
Traceless
 xyz
x -2.050 0.000 0.000
y 0.000 2.274 0.000
z 0.000 0.000 -0.224
Polar
3z2-r2-0.448
x2-y2-2.883
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.676 0.000 0.000
y 0.000 1.174 0.000
z 0.000 0.000 0.945


<r2> (average value of r2) Å2
<r2> 5.295
(<r2>)1/2 2.301