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All results from a given calculation for H2OHCOOH (Water formic acid dimer 2)

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-266.205153
Energy at 298.15K-266.209441
HF Energy-266.205153
Nuclear repulsion energy117.902257
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 3843 3708 52.51      
2 A 3698 3568 29.53      
3 A 3682 3553 165.79      
4 A 3097 2988 15.06      
5 A 1794 1732 318.28      
6 A 1698 1639 55.47      
7 A 1396 1347 3.52      
8 A 1326 1279 13.81      
9 A 1140 1100 213.61      
10 A 1086 1048 2.38      
11 A 712 687 127.99      
12 A 630 608 16.97      
13 A 585 564 308.22      
14 A 289 279 67.82      
15 A 244 236 91.33      
16 A 177 171 3.30      
17 A 104 100 9.03      
18 A 102 99 9.60      

Unscaled Zero Point Vibrational Energy (zpe) 12800.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 12352.6 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
0.75777 0.09643 0.08622

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 -1.823 0.453 -0.084
O2 -2.435 -0.295 -0.100
O3 0.220 0.951 0.005
H4 -2.911 -0.230 0.733
C5 0.678 -0.166 0.014
O6 1.980 -0.469 0.001
H7 0.074 -1.082 0.038
H8 2.471 0.368 -0.021

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.96712.10511.52282.57863.91432.44354.2958
O20.96712.93540.96193.11824.42002.63324.9520
O32.10512.93543.42511.20702.26092.03852.3253
H41.52280.96193.42513.66144.95183.18175.4681
C52.57863.11821.20703.66141.33681.09771.8716
O63.91434.42002.26094.95181.33682.00290.9708
H72.44352.63322.03853.18171.09772.00292.8028
H84.29584.95202.32535.46811.87160.97082.8028

picture of Water formic acid dimer 2 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.266 H1 O3 C5 98.609
O2 H1 O3 142.953 O3 C5 O6 125.358
O3 C5 H7 124.308 C5 O6 H8 107.334
O6 C5 H7 110.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability