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

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-265.655779
Energy at 298.15K-265.659641
HF Energy-264.897448
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.979229
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 3950 3744 102.22      
2 A 3788 3591 107.70      
3 A 3769 3573 96.16      
4 A 3173 3008 12.68      
5 A 1793 1700 330.13      
6 A 1636 1551 95.06      
7 A 1450 1374 3.74      
8 A 1332 1263 19.15      
9 A 1157 1096 274.35      
10 A 1078 1022 4.54      
11 A 688 652 166.32      
12 A 646 612 48.04      
13 A 473 448 160.48      
14 A 322 305 160.75      
15 A 158 150 11.35      
16 A 95 90 121.79      
17 A 71 67 8.46      
18 A 63 59 38.18      

Unscaled Zero Point Vibrational Energy (zpe) 12820.8 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 12152.8 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
0.83831 0.09132 0.08248

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 -1.786 0.409 -0.033
O2 -2.420 -0.320 -0.055
O3 0.193 0.914 -0.001
H4 -3.224 0.054 0.314
C5 0.692 -0.188 0.030
O6 2.012 -0.425 -0.006
H7 0.132 -1.123 0.088
H8 2.449 0.440 -0.060

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.96632.04261.52092.55023.88892.45794.2355
O20.96632.88990.96033.11624.43352.67914.9280
O32.04262.88993.53711.21022.25892.03922.3061
H41.52090.96033.53713.93405.26753.56365.6984
C52.55023.11621.21023.93401.34131.09111.8679
O63.88894.43352.25895.26751.34132.00720.9713
H72.45792.67912.03923.56361.09112.00722.7988
H84.23554.92802.30615.69841.86790.97132.7988

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 104.261 H1 O3 C5 100.102
O2 H1 O3 145.306 O3 C5 O6 124.505
O3 C5 H7 124.696 C5 O6 H8 106.655
O6 C5 H7 110.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability