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All results from a given calculation for H2OH2O (water dimer)

using model chemistry: B3LYPultrafine_cp_opt/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine_cp_opt/3-21G
 hartrees
Energy at 0K-151.959597
Energy at 298.15K-151.962675
Nuclear repulsion energy36.424099
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 B3LYPultrafine_cp_opt/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 A 3507 3385 28.14      
2 A 3452 3331 6.61      
3 A 3281 3167 239.29      
4 A 1739 1678 64.30      
5 A 1690 1631 44.82      
6 A 429 414 143.75      
7 A 223 215 11.16      
8 A 194 187 289.90      
9 A 3593 3467 1.98      
10 A 762 736 237.05      
11 A 195 189 31.39      
12 A 129 125 139.96      

Unscaled Zero Point Vibrational Energy (zpe) 9597.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9262.0 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 B3LYPultrafine_cp_opt/3-21G
ABC
7.13061 0.22376 0.22332

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine_cp_opt/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.007 0.493 0.000
O2 -0.010 1.500 0.000
O3 -0.010 -1.331 0.000
H4 0.956 1.743 0.000
H5 -0.395 -1.796 0.790
H6 -0.395 -1.796 -0.790
X7 0.959 0.735 0.000
X8 -0.779 -2.262 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6 X7 X8
H11.00771.82371.57782.45232.45230.99562.8606
O21.00772.83130.99563.41183.41181.23443.8400
O31.82372.83133.22180.99420.99422.28181.2075
H41.57780.99563.22183.86943.86941.00774.3641
H52.45233.41180.99423.86941.57962.97710.9942
H62.45233.41180.99423.86941.57962.97710.9942
X70.99561.23442.28181.00772.97712.97713.4642
X82.86063.84001.20754.36410.99420.99423.4642

picture of water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 103.925 H1 O3 H5 117.953
H1 O3 H6 117.953 O2 H1 O3 179.748
H5 O3 H6 105.209
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine_cp_opt/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.388      
2 O -0.505      
3 O -0.470      
4 H 0.157      
5 H 0.215      
6 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.154 -4.168 0.000 4.171
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.198 5.863 0.000
y 5.863 -10.207 0.000
z 0.000 0.000 -10.905
Traceless
 xyz
x -0.642 5.863 0.000
y 5.863 0.845 0.000
z 0.000 0.000 -0.203
Polar
3z2-r2-0.406
x2-y2-0.991
xy5.863
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.506 0.213 0.000
y 0.213 0.244 0.000
z 0.000 0.000 1.025


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000