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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   -2.4837 -0.0449 -0.7043
H8 1.3273 -0.8018 -0.0624   -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 1.5480
H8 1.9680 2.7062 0.9793 2.6436 2.0366 3.7340 1.5480
Maximum atom distance is 4.8310Å 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 126.031
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
O2 C4 H6 110.557 O5 C4 H6 123.412
H7 O3 H8 105.239

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