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

using model chemistry: PBEPBEultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-152.759121
Energy at 298.15K-152.761939
HF Energy-152.759121
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.594675
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 PBEPBEultrafine/TZVP
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' 3771 3728 47.95      
2 A' 3692 3650 9.05      
3 A' 3534 3494 346.25      
4 A' 1592 1574 31.23      
5 A' 1572 1554 82.22      
6 A' 385 381 82.80      
7 A' 200 197 58.51      
8 A' 156 154 251.67      
9 A" 3801 3757 59.56      
10 A" 661 653 148.33      
11 A" 145 143 166.15      
12 A" 128 127 30.38      

Unscaled Zero Point Vibrational Energy (zpe) 9817.9 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 9706.0 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 PBEPBEultrafine/TZVP
ABC
7.02459 0.21841 0.21839

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.157 0.540 0.000
O2 0.005 1.508 0.000
O3 0.005 -1.414 0.000
H4 0.895 1.894 0.000
H5 -0.566 -1.590 0.769
H6 -0.566 -1.590 -0.769

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97971.96001.54172.37642.3764
O20.97972.92190.96993.24173.2417
O31.96002.92193.42550.97320.9732
H41.54170.96993.42553.85433.8543
H52.37643.24170.97323.85431.5374
H62.37643.24170.97323.85431.5374

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 104.514 H1 O3 H5 103.007
H1 O3 H6 103.007 O2 H1 O3 166.601
H5 O3 H6 104.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.257      
2 O -0.549      
3 O -0.529      
4 H 0.252      
5 H 0.284      
6 H 0.284      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.092 -2.979 0.000 2.980
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.858 6.648 0.000
y 6.648 -12.633 0.000
z 0.000 0.000 -11.973
Traceless
 xyz
x 0.445 6.648 0.000
y 6.648 -0.718 0.000
z 0.000 0.000 0.273
Polar
3z2-r20.546
x2-y20.775
xy6.648
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.974 0.305 0.000
y 0.305 2.548 0.000
z 0.000 0.000 1.941


<r2> (average value of r2) Å2
<r2> 52.680
(<r2>)1/2 7.258