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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-265.653683
Energy at 298.15K-265.657319
HF Energy-264.894683
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.594213
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 MP2/TZVP
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 3962 3756 92.33      
2 A 3834 3634 26.98      
3 A 3775 3579 74.18      
4 A 3176 3011 9.39      
5 A 1812 1718 303.60      
6 A 1624 1539 80.24      
7 A 1451 1375 6.77      
8 A 1301 1233 3.18      
9 A 1118 1060 304.10      
10 A 1069 1014 4.60      
11 A 661 626 168.47      
12 A 636 603 38.01      
13 A 367 348 148.31      
14 A 250 237 129.28      
15 A 141 134 28.14      
16 A 120 114 104.75      
17 A 74 70 30.20      
18 A 45 43 14.15      

Unscaled Zero Point Vibrational Energy (zpe) 12708.2 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 12046.1 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 MP2/TZVP
ABC
0.68692 0.09390 0.08286

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.890 0.493 -0.062
O2 2.374 -0.340 -0.071
O3 -0.244 0.929 0.027
H4 3.228 -0.122 0.310
H5 -0.958 1.572 -0.109
C6 -0.832 -0.296 0.063
O7 -2.017 -0.477 -0.045
H8 -0.068 -1.062 0.201

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96342.17931.51943.04612.83644.02502.5137
O20.96342.91070.96083.84213.20894.39272.5607
O32.17932.91073.63890.97081.35932.26432.0064
H41.51940.96083.63894.53614.07185.26923.4297
H53.04613.84210.97084.53611.87972.30732.7975
C62.83643.20891.35934.07181.87971.20331.0908
O74.02504.39272.26435.26922.30731.20332.0492
H82.51372.56072.00643.42972.79751.09082.0492

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 104.299 H1 O3 H5 147.968
H1 O3 C6 104.144 O2 H1 O3 131.711
O3 C6 O7 124.045 O3 C6 H8 109.463
H5 O3 C6 106.359 O7 C6 H8 126.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability