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All results from a given calculation for H2O (Water)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-75.973965
Energy at 298.15K-75.975062
HF Energy-75.973965
Nuclear repulsion energy8.834990
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 B3LYP/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 3418 3298 13.63 90.56 0.21 0.34
2 A1 1692 1633 36.79 13.90 0.48 0.64
3 B2 3558 3433 1.54 42.85 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4334.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 4182.0 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 B3LYP/3-21G
ABC
25.00599 13.57469 8.79841

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.123
H2 0.000 0.785 -0.491
H3 0.000 -0.785 -0.491

Atom - Atom Distances (Å)
  O1 H2 H3
O10.99630.9963
H20.99631.5698
H30.99631.5698

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 103.961
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.639      
2 H 0.319      
3 H 0.319      


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 -2.239 2.239
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.854 0.000 0.000
y 0.000 -4.247 0.000
z 0.000 0.000 -5.825
Traceless
 xyz
x -1.818 0.000 0.000
y 0.000 2.092 0.000
z 0.000 0.000 -0.274
Polar
3z2-r2-0.548
x2-y2-2.607
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 1.113 0.000
z 0.000 0.000 0.666


<r2> (average value of r2) Å2
<r2> 5.359
(<r2>)1/2 2.315