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

using model chemistry: B3LYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-31G
 hartrees
Energy at 0K-152.787745
Energy at 298.15K-152.790740
HF Energy-152.787745
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy37.160183
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/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 A' 3741 3599 44.24      
2 A' 3645 3506 0.05      
3 A' 3469 3337 327.04      
4 A' 1658 1595 72.28      
5 A' 1621 1559 95.66      
6 A' 444 427 125.71      
7 A' 236 227 19.34      
8 A' 162 156 414.17      
9 A" 3802 3658 40.47      
10 A" 782 752 261.08      
11 A" 164 158 233.82      
12 A" 121 117 6.72      

Unscaled Zero Point Vibrational Energy (zpe) 9922.0 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 9544.9 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/6-31G
ABC
7.19958 0.23338 0.23269

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.155 0.523 0.000
O2 0.003 1.496 0.000
O3 0.003 -1.410 0.000
H4 0.867 1.954 0.000
H5 -0.537 -1.583 0.800
H6 -0.537 -1.583 -0.800

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.98451.93841.59842.35642.3564
O20.98452.90530.97733.22653.2265
O31.93842.90533.47250.98080.9808
H41.59840.97733.47253.88843.8884
H52.35643.22650.98083.88841.5992
H62.35643.22650.98083.88841.5992

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 109.121 H1 O3 H5 102.662
H1 O3 H6 102.662 O2 H1 O3 166.695
H5 O3 H6 109.233
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.392      
2 O -0.789      
3 O -0.710      
4 H 0.337      
5 H 0.385      
6 H 0.385      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.025 -3.613 0.000 3.613
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.630 6.949 0.000
y 6.949 -11.305 0.000
z 0.000 0.000 -11.163
Traceless
 xyz
x -0.396 6.949 0.000
y 6.949 0.092 0.000
z 0.000 0.000 0.304
Polar
3z2-r20.609
x2-y2-0.326
xy6.949
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.307 0.526 0.000
y 0.526 1.852 0.000
z 0.000 0.000 1.266


<r2> (average value of r2) Å2
<r2> 49.652
(<r2>)1/2 7.046