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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_cp_opt/6-31G*
Point group is C1
| Atom |
Internal |
|
Principal |
| x (Å) |
y (Å) |
z (Å) |
|
a (Å) |
b (Å) |
c (Å) |
| H1 |
0.4211 |
0.9442 |
-0.0050 |
|
-0.4041 |
0.9516 |
-0.0016 |
| O2 |
-0.5605 |
1.1359 |
0.0068 |
|
0.5808 |
1.1257 |
0.0021 |
| O3 |
1.8976 |
-0.0064 |
-0.0943 |
|
-1.8987 |
0.0278 |
0.0644 |
| C4 |
-1.1999 |
-0.0291 |
0.0074 |
|
1.1991 |
-0.0507 |
0.0115 |
| O5 |
-0.6815 |
-1.1303 |
0.0058 |
|
0.6610 |
-1.1424 |
0.0049 |
| H6 |
-2.2884 |
0.1277 |
0.0117 |
|
2.2902 |
0.0866 |
0.0243 |
| H7 |
2.4933 |
-0.0895 |
0.6651 |
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-2.4837 |
-0.0449 |
-0.7043 |
| H8 |
1.3273 |
-0.8018 |
-0.0624 |
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-1.3423 |
-0.7778 |
0.0414 |
Atom - Atom Distances (Å)
| |
H1 |
O2 |
O3 |
C4 |
O5 |
H6 |
H7 |
H8 |
| H1 |
|
1.0002 |
1.7583 |
1.8908 |
2.3493 |
2.8299 |
2.4107 |
1.9680 |
| O2 |
1.0002 |
| 2.7124 |
1.3290 |
2.2695 |
2.0005 |
3.3557 |
2.7062 |
| O3 |
1.7583 |
2.7124 |
| 3.0993 |
2.8151 |
4.1895 |
0.9687 |
0.9793 |
| C4 |
1.8908 |
1.3290 |
3.0993 |
|
1.2171 |
1.0998 |
3.7518 |
2.6436 |
| O5 |
2.3493 |
2.2695 |
2.8151 |
1.2171 |
| 2.0408 |
3.4054 |
2.0366 |
| H6 |
2.8299 |
2.0005 |
4.1895 |
1.0998 |
2.0408 |
| 4.8310 |
3.7340 |
| H7 |
2.4107 |
3.3557 |
0.9687 |
3.7518 |
3.4054 |
4.8310 |
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1.5480 |
| H8 |
1.9680 |
2.7062 |
0.9793 |
2.6436 |
2.0366 |
3.7340 |
1.5480 |
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Maximum atom distance is 4.8310Å
between atoms H6 and H7.
Calculated Bond Angles (degrees) (Ignoring Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
|
O2 |
C4 |
O5 |
126.031 |
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Calculated Bond Angles (degrees) (Involving Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
|
H1 |
O2 |
C4 |
107.705 |
|
H1 |
O3 |
H7 |
121.531 |
|
H1 |
O3 |
H8 |
87.042 |
|
O2 |
H1 |
O3 |
158.178 |
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O2 |
C4 |
H6 |
110.557 |
|
O5 |
C4 |
H6 |
123.412 |
|
H7 |
O3 |
H8 |
105.239 |
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For information on specific bond angles or dihedrals
see the geometry comparison page in section
Comparisons > Geometry > Bonds, angles.