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All results from a given calculation for H2O (Water)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-76.399421
Energy at 298.15K-76.400518
HF Energy-76.399421
Nuclear repulsion energy9.166479
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 mPW1PW91/6-31G**
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 3877 3689 4.34 74.75 0.17 0.28
2 A1 1672 1591 76.84 7.15 0.54 0.70
3 B2 3995 3801 30.53 35.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4772.2 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 4540.7 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 mPW1PW91/6-31G**
ABC
26.95691 14.60023 9.47075

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.118
H2 0.000 0.757 -0.473
H3 0.000 -0.757 -0.473

Atom - Atom Distances (Å)
  O1 H2 H3
O10.96030.9603
H20.96031.5137
H30.96031.5137

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 104.025
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.635      
2 H 0.317      
3 H 0.317      


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 -2.074 2.074
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -7.126 0.000 0.000
y 0.000 -4.227 0.000
z 0.000 0.000 -5.949
Traceless
 xyz
x -2.038 0.000 0.000
y 0.000 2.311 0.000
z 0.000 0.000 -0.273
Polar
3z2-r2-0.546
x2-y2-2.899
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.446 0.000 0.000
y 0.000 1.074 0.000
z 0.000 0.000 0.801


<r2> (average value of r2) Å2
<r2> 5.307
(<r2>)1/2 2.304