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

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-265.449800
Energy at 298.15K-265.454023
HF Energy-264.776854
Counterpoise corrected energy-265.445426
CP Energy at 298.15K-265.449180
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy117.007471
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 3880 3659 90.66      
2 A 3731 3518 77.54      
3 A 3682 3472 81.25      
4 A 3209 3026 10.90      
5 A 1811 1708 298.48      
6 A 1756 1656 85.55      
7 A 1438 1356 2.96      
8 A 1352 1275 14.77      
9 A 1174 1107 241.02      
10 A 1098 1035 3.58      
11 A 724 683 172.53      
12 A 638 602 29.99      
13 A 572 539 358.74      
14 A 285 269 107.52      
15 A 203 191 116.29      
16 A 176 166 0.97      
17 A 112 105 15.16      
18 A 100 95 14.46      

Unscaled Zero Point Vibrational Energy (zpe) 12970.0 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 12230.7 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
0.74130 0.09464 0.08452

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 -1.829 0.446 -0.114
O2 -2.444 -0.305 -0.090
O3 0.218 0.955 0.001
H4 -2.972 -0.168 0.708
C5 0.684 -0.169 0.008
O6 1.992 -0.469 0.007
H7 0.083 -1.086 0.017
H8 2.484 0.375 -0.004

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.97082.11301.53632.58983.93072.45394.3151
O20.97082.94670.96683.13184.43952.64704.9751
O32.11302.94673.45571.21672.27432.04582.3387
H41.53630.96683.45573.72225.02213.26415.5292
C52.58983.13181.21673.72221.34201.09611.8809
O63.93074.43952.27435.02211.34202.00600.9771
H72.45392.64702.04583.26411.09612.00602.8107
H84.31514.97512.33875.52921.88090.97712.8107

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 104.916 H1 O3 C5 98.522
O2 H1 O3 142.983 O3 C5 O6 125.380
O3 C5 H7 124.303 C5 O6 H8 107.353
O6 C5 H7 110.316
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability