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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
Maximum atom distance is 4.6429Å between atoms H6 and H7.
picture of Formic acid water dimer
Calculated Bond Angles (degrees) (Ignoring Hydrogens)
atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
O2 C4 O5 126.121
Calculated Bond Angles (degrees) (Involving Hydrogens)
atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
H1 O2 C4 107.733 H1 O3 H7 112.102
H1 O3 H8 85.196 O2 H1 O3 157.127
O2 C4 H6 110.953 O5 C4 H6 122.926
H7 O3 H8 104.724

For information on specific bond angles or dihedrals see the geometry comparison page in section Comparisons > Geometry > Bonds, angles.