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Computational Chemistry Comparison and Benchmark DataBase
Release 22 (May 2022) Standard Reference Database 101
National Institute of Standards and Technology
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Geometry for H2OH2O (water dimer)
1A' CS
1910171554
InChI=1S/H4O2/c1-3-2/h1H,2H2 INChIKey=CIFBQZMBEZYWOK-UHFFFAOYSA-N
B3LYPultrafine_cp_opt/6-31G*
Point group is Cs
| Atom |
Internal |
|
Principal |
| x (Å) |
y (Å) |
z (Å) |
|
a (Å) |
b (Å) |
c (Å) |
| H1 |
0.0753 |
0.5444 |
0.0000 |
|
-0.0033 |
0.0753 |
0.5444 |
| O2 |
0.0023 |
1.5185 |
0.0000 |
|
-0.0001 |
0.0023 |
1.5185 |
| O3 |
0.0023 |
-1.3925 |
0.0000 |
|
-0.0001 |
0.0023 |
-1.3925 |
| H4 |
0.9234 |
1.8155 |
0.0000 |
|
-0.0408 |
0.9225 |
1.8155 |
| H5 |
-0.5176 |
-1.6838 |
0.7646 |
|
0.7867 |
-0.4834 |
-1.6838 |
| H6 |
-0.5176 |
-1.6838 |
-0.7646 |
|
-0.7410 |
-0.5509 |
-1.6838 |
| X7 |
0.9965 |
0.8413 |
0.0000 |
|
-0.0440 |
0.9955 |
0.8413 |
| X8 |
-1.0375 |
-1.9750 |
0.0000 |
|
0.0458 |
-1.0365 |
-1.9750 |
Atom - Atom Distances (Å)
| |
H1 |
O2 |
O3 |
H4 |
H5 |
H6 |
X7 |
X8 |
| H1 |
|
0.9769 |
1.9383 |
1.5281 |
2.4291 |
2.4291 |
0.9679 |
2.7542 |
| O2 |
0.9769 |
| 2.9110 |
0.9679 |
3.3331 |
3.3331 |
1.2029 |
3.6450 |
| O3 |
1.9383 |
2.9110 |
| 3.3376 |
0.9694 |
0.9694 |
2.4451 |
1.1918 |
| H4 |
1.5281 |
0.9679 |
3.3376 |
| 3.8608 |
3.8608 |
0.9769 |
4.2677 |
| H5 |
2.4291 |
3.3331 |
0.9694 |
3.8608 |
|
1.5291 |
3.0419 |
0.9694 |
| H6 |
2.4291 |
3.3331 |
0.9694 |
3.8608 |
1.5291 |
| 3.0419 |
0.9694 |
| X7 |
0.9679 |
1.2029 |
2.4451 |
0.9769 |
3.0419 |
3.0419 |
| 3.4741 |
| X8 |
2.7542 |
3.6450 |
1.1918 |
4.2677 |
0.9694 |
0.9694 |
3.4741 |
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Maximum atom distance is 4.2677Å
between atoms H4 and X8.
Calculated Bond Angles (degrees) (Ignoring Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
Calculated Bond Angles (degrees) (Involving Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
|
H1 |
O2 |
H4 |
103.579 |
|
H1 |
O3 |
H5 |
108.690 |
|
H1 |
O3 |
H6 |
108.690 |
|
O2 |
H1 |
O3 |
173.551 |
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H5 |
O3 |
H6 |
104.133 |
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For information on specific bond angles or dihedrals
see the geometry comparison page in section
Comparisons > Geometry > Bonds, angles.