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

using model chemistry: PBEPBEultrafine/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-152.757090
Energy at 298.15K-152.759852
HF Energy-152.757090
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.687624
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/cc-pVTZ
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 3792 3766 55.85      
2 A 3769 3743 44.90      
3 A 3692 3666 6.87      
4 A 3542 3518 334.44      
5 A 1627 1616 39.56      
6 A 1603 1592 71.55      
7 A 663 659 84.89      
8 A 408 406 34.17      
9 A 197 196 90.03      
10 A 165 164 126.03      
11 A 152 151 220.76      
12 A 68 67 50.69      

Unscaled Zero Point Vibrational Energy (zpe) 9839.2 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 9771.3 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/cc-pVTZ
ABC
6.67445 0.21997 0.21951

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.549 -0.002 0.074
O2 1.518 0.115 0.027
O3 -1.405 -0.120 -0.036
H4 1.848 -0.764 -0.212
H5 -1.683 0.199 0.838
H6 -1.625 0.613 -0.634

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97791.95991.53332.36782.3677
O20.97792.93310.96863.30393.2509
O31.95992.93313.32070.97150.9716
H41.53330.96863.32073.80843.7604
H52.36783.30390.97153.80841.5300
H62.36773.25090.97163.76041.5300

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 103.948 H1 O3 H5 102.461
H1 O3 H6 102.447 O2 H1 O3 173.143
H5 O3 H6 103.889
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.211      
2 O -0.480      
3 O -0.395      
4 H 0.207      
5 H 0.229      
6 H 0.229      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.258 0.084 0.004 2.260
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.677 -6.170 -0.183
y -6.170 -12.321 -0.019
z -0.183 -0.019 -11.760
Traceless
 xyz
x -0.636 -6.170 -0.183
y -6.170 -0.103 -0.019
z -0.183 -0.019 0.739
Polar
3z2-r21.478
x2-y2-0.355
xy-6.170
xz-0.183
yz-0.019


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.837 -0.246 -0.007
y -0.246 2.196 0.003
z -0.007 0.003 2.097


<r2> (average value of r2) Å2
<r2> 52.173
(<r2>)1/2 7.223