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All results from a given calculation for H2O (Water)

using model chemistry: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-75.238534
Energy at 298.15K-75.239632
HF Energy-75.238534
Nuclear repulsion energy8.503652
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 PBEPBE/STO-3G
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 3495 3193 73.14 34.79 0.16 0.28
2 A1 1984 1813 2.26 9.49 0.75 0.85
3 B2 3711 3390 53.65 18.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4595.0 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 4198.0 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 PBEPBE/STO-3G
ABC
19.63182 14.01767 8.17820

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.139
H2 0.000 0.772 -0.554
H3 0.000 -0.772 -0.554

Atom - Atom Distances (Å)
  O1 H2 H3
O11.03751.0375
H21.03751.5448
H31.03751.5448

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 96.237
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.289      
2 H 0.144      
3 H 0.144      


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 -1.552 1.552
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.174 0.000 0.000
y 0.000 -4.623 0.000
z 0.000 0.000 -5.270
Traceless
 xyz
x -1.227 0.000 0.000
y 0.000 1.099 0.000
z 0.000 0.000 0.128
Polar
3z2-r20.256
x2-y2-1.551
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.004 0.000 0.000
y 0.000 0.823 0.000
z 0.000 0.000 0.470


<r2> (average value of r2) Å2
<r2> 5.306
(<r2>)1/2 2.303