All results from a given calculation for H2OH2O (water dimer)
using model chemistry: MP2/CEP-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 MP2/CEP-31G
| hartrees |
Energy at 0K | -33.893372 |
Energy at 298.15K | |
HF Energy | -33.663929 |
Counterpoise corrected energy | |
CP Energy at 298.15K | |
Counterpoise optimized geometry corrected energy | |
CP opt. Energy at 298.15K | |
Nuclear repulsion energy | 25.474344 |
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 MP2/CEP-31G
Geometric Data calculated at MP2/CEP-31G
Point Group is Cs
Cartesians (Å)
Atom |
x (Å) |
y (Å) |
z (Å) |
H1 |
-0.017 |
0.512 |
0.000 |
O2 |
-0.027 |
1.503 |
0.000 |
O3 |
-0.027 |
-1.333 |
0.000 |
H4 |
0.890 |
1.852 |
0.000 |
H5 |
-0.220 |
-1.861 |
0.806 |
H6 |
-0.220 |
-1.861 |
-0.806 |
Atom - Atom Distances (Å)
|
H1 |
O2 |
O3 |
H4 |
H5 |
H6 |
H1 | | 0.9911 | 1.8450 | 1.6188 | 2.5139 | 2.5139 |
O2 | 0.9911 | | 2.8360 | 0.9816 | 3.4642 | 3.4642 | O3 | 1.8450 | 2.8360 | | 3.3148 | 0.9824 | 0.9824 | H4 | 1.6188 | 0.9816 | 3.3148 | | 3.9581 | 3.9581 | H5 | 2.5139 | 3.4642 | 0.9824 | 3.9581 | | 1.6122 | H6 | 2.5139 | 3.4642 | 0.9824 | 3.9581 | 1.6122 | |
More geometry information
Calculated Bond Angles
atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
H1 |
O2 |
H4 |
110.278 |
|
H1 |
O3 |
H5 |
122.550 |
H1 |
O3 |
H6 |
122.550 |
|
O2 |
H1 |
O3 |
179.132 |
H5 |
O3 |
H6 |
110.276 |
|
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability