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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-265.446868
Energy at 298.15K-265.450767
HF Energy-264.773560
Counterpoise corrected energy-265.443396
CP Energy at 298.15K-265.446911
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.492346
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 MP2/6-31G*
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 3896 3674 79.22      
2 A 3762 3547 21.89      
3 A 3684 3474 74.52      
4 A 3204 3022 8.98      
5 A 1836 1732 257.77      
6 A 1744 1645 83.59      
7 A 1438 1356 8.91      
8 A 1311 1237 4.25      
9 A 1137 1072 289.20      
10 A 1085 1023 3.51      
11 A 696 657 173.37      
12 A 626 590 49.63      
13 A 457 431 261.56      
14 A 227 214 124.90      
15 A 174 165 96.13      
16 A 146 138 0.42      
17 A 109 103 15.30      
18 A 77 73 12.58      

Unscaled Zero Point Vibrational Energy (zpe) 12805.4 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 12075.5 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 MP2/6-31G*
ABC
0.64990 0.09554 0.08392

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.967 0.527 -0.112
O2 2.428 -0.324 -0.089
O3 -0.286 0.959 0.008
H4 3.019 -0.270 0.675
H5 -1.021 1.603 -0.006
C6 -0.828 -0.284 0.009
O7 -2.014 -0.526 0.002
H8 -0.017 -1.022 0.018

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96862.29721.53683.17742.91314.12012.5205
O20.96863.00380.96713.95173.25804.44812.5450
O32.29723.00383.58850.97711.35642.27901.9989
H41.53680.96713.58854.50453.90425.08443.1958
H53.17743.95170.97714.50451.89712.34982.8101
C62.91313.25801.35643.90421.89711.21071.0962
O74.12014.44812.27905.08442.34981.21072.0579
H82.52052.54501.99893.19582.81011.09622.0579

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 105.108 H1 O3 H5 149.388
H1 O3 C6 102.693 O2 H1 O3 129.117
O3 C6 O7 125.092 O3 C6 H8 108.716
H5 O3 C6 107.672 O7 C6 H8 126.192
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability