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

using model chemistry: PBEPBEultrafine/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-152.727136
Energy at 298.15K-152.729996
HF Energy-152.727136
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.529210
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/aug-cc-pVDZ
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' 3768 3745 67.82      
2 A' 3682 3659 6.97      
3 A' 3520 3498 393.80      
4 A' 1602 1592 25.39      
5 A' 1582 1573 80.90      
6 A' 381 379 36.49      
7 A' 195 194 171.49      
8 A' 164 163 104.95      
9 A" 3791 3768 68.98      
10 A" 653 649 73.13      
11 A" 167 166 0.45      
12 A" 130 129 161.07      

Unscaled Zero Point Vibrational Energy (zpe) 9817.2 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 9757.3 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/aug-cc-pVDZ
ABC
6.85068 0.21791 0.21768

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.112 0.543 0.000
O2 0.006 1.519 0.000
O3 0.006 -1.417 0.000
H4 0.916 1.862 0.000
H5 -0.565 -1.611 0.766
H6 -0.565 -1.611 -0.766

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.98141.96291.54422.38432.3843
O20.98142.93580.97193.27233.2723
O31.96292.93583.40240.97520.9752
H41.54420.97193.40243.85203.8520
H52.38433.27230.97523.85201.5321
H62.38433.27230.97523.85201.5321

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 104.475 H1 O3 H5 103.299
H1 O3 H6 103.299 O2 H1 O3 170.736
H5 O3 H6 103.538
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.144      
2 O -0.227      
3 O -0.262      
4 H 0.079      
5 H 0.133      
6 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.183 -2.464 0.000 2.470
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.139 6.100 0.000
y 6.100 -13.388 0.000
z 0.000 0.000 -12.486
Traceless
 xyz
x 0.798 6.100 0.000
y 6.100 -1.076 0.000
z 0.000 0.000 0.278
Polar
3z2-r20.555
x2-y21.249
xy6.100
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.882 0.174 0.000
y 0.174 3.532 0.000
z 0.000 0.000 2.939


<r2> (average value of r2) Å2
<r2> 53.041
(<r2>)1/2 7.283