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All results from a given calculation for H2OHCOOH (Water formic acid dimer 1)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-266.201673
Energy at 298.15K-266.205540
HF Energy-266.201673
Nuclear repulsion energy116.939704
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at TPSSh/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3860 3725 53.78      
2 A 3755 3623 18.21      
3 A 3702 3573 45.89      
4 A 3077 2969 11.27      
5 A 1832 1768 286.89      
6 A 1687 1628 58.91      
7 A 1405 1356 13.36      
8 A 1281 1236 4.83      
9 A 1106 1068 237.18      
10 A 1079 1041 2.98      
11 A 684 660 126.39      
12 A 614 593 43.22      
13 A 432 417 209.99      
14 A 240 232 92.50      
15 A 181 175 65.37      
16 A 131 127 0.50      
17 A 99 95 11.79      
18 A 80 77 6.48      

Unscaled Zero Point Vibrational Energy (zpe) 12622.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 12180.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at TPSSh/6-31G(2df,p)
ABC
0.63644 0.09643 0.08442

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.968 0.530 -0.090
O2 2.426 -0.318 -0.095
O3 -0.291 0.956 0.009
H4 2.977 -0.298 0.694
H5 -1.022 1.594 -0.007
C6 -0.828 -0.283 0.011
O7 -2.004 -0.527 -0.001
H8 -0.010 -1.016 0.030

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96402.30051.52273.17402.91324.11052.5125
O20.96403.00280.96223.94363.25624.43612.5371
O32.30053.00283.56670.97051.35042.26521.9913
H41.52270.96223.56674.47903.86595.03433.1428
H53.17403.94360.97054.47901.88792.33752.7995
C62.91323.25621.35043.86591.88791.20081.0981
O74.11054.43612.26525.03432.33751.20082.0534
H82.51252.53711.99133.14282.79951.09812.0534

picture of Water formic acid dimer 1 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.470 H1 O3 H5 149.320
H1 O3 C6 102.745 O2 H1 O3 129.066
O3 C6 O7 125.110 O3 C6 H8 108.395
H5 O3 C6 107.743 O7 C6 H8 126.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability