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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 HCOOHH2O (Formic acid water dimer)
1A C1
1910171554
InChI=1S/CH4O3/c2-1-4-5-3/h1H,3H2 INChIKey=BPUQYVNUHKNCFS-UHFFFAOYSA-N
B3LYP/6-31G*
Point group is C1
| Atom |
Internal |
|
Principal |
| x (Å) |
y (Å) |
z (Å) |
|
a (Å) |
b (Å) |
c (Å) |
| H1 |
0.4346 |
0.9493 |
-0.0402 |
|
0.4521 |
0.9413 |
-0.0336 |
| O2 |
-0.5505 |
1.1363 |
-0.0025 |
|
-0.5300 |
1.1460 |
-0.0112 |
| O3 |
1.8786 |
-0.0114 |
-0.0929 |
|
1.8794 |
-0.0450 |
-0.0637 |
| C4 |
-1.1822 |
-0.0288 |
0.0169 |
|
-1.1827 |
-0.0077 |
-0.0015 |
| O5 |
-0.6594 |
-1.1305 |
-0.0011 |
|
-0.6794 |
-1.1186 |
-0.0112 |
| H6 |
-2.2714 |
0.1151 |
0.0541 |
|
-2.2696 |
0.1557 |
0.0187 |
| H7 |
2.3118 |
-0.0670 |
0.7732 |
|
2.2979 |
-0.1080 |
0.8091 |
| H8 |
1.2676 |
-0.7800 |
-0.1163 |
|
1.2551 |
-0.8025 |
-0.0964 |
Atom - Atom Distances (Å)
| |
H1 |
O2 |
O3 |
C4 |
O5 |
H6 |
H7 |
H8 |
| H1 |
|
1.0034 |
1.7352 |
1.8905 |
2.3503 |
2.8332 |
2.2844 |
1.9209 |
| O2 |
1.0034 |
| 2.6881 |
1.3255 |
2.2695 |
2.0019 |
3.2004 |
2.6440 |
| O3 |
1.7352 |
2.6881 |
| 3.0629 |
2.7753 |
4.1546 |
0.9700 |
0.9822 |
| C4 |
1.8905 |
1.3255 |
3.0629 |
|
1.2196 |
1.0993 |
3.5751 |
2.5659 |
| O5 |
2.3503 |
2.2695 |
2.7753 |
1.2196 |
| 2.0380 |
3.2494 |
1.9620 |
| H6 |
2.8332 |
2.0019 |
4.1546 |
1.0993 |
2.0380 |
| 4.6429 |
3.6545 |
| H7 |
2.2844 |
3.2004 |
0.9700 |
3.5751 |
3.2494 |
4.6429 |
|
1.5459 |
| H8 |
1.9209 |
2.6440 |
0.9822 |
2.5659 |
1.9620 |
3.6545 |
1.5459 |
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Maximum atom distance is 4.6429Å
between atoms H6 and H7.
Calculated Bond Angles (degrees) (Ignoring Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
|
O2 |
C4 |
O5 |
126.121 |
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Calculated Bond Angles (degrees) (Involving Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
|
H1 |
O2 |
C4 |
107.733 |
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H1 |
O3 |
H7 |
112.102 |
|
H1 |
O3 |
H8 |
85.196 |
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O2 |
H1 |
O3 |
157.127 |
|
O2 |
C4 |
H6 |
110.953 |
|
O5 |
C4 |
H6 |
122.926 |
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H7 |
O3 |
H8 |
104.724 |
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For information on specific bond angles or dihedrals
see the geometry comparison page in section
Comparisons > Geometry > Bonds, angles.