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All results from a given calculation for H2OH2CO (water formaldehyde dimer)

using model chemistry: PBEPBE_cp_opt/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE_cp_opt/6-31+G**
 hartrees
Energy at 0K-190.735243
Energy at 298.15K-190.738050
Nuclear repulsion energy 
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 PBEPBE_cp_opt/6-31+G**
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 3809 3765 86.70      
2 A 3577 3536 278.45      
3 A 2939 2906 77.28      
4 A 2861 2828 64.73      
5 A 1747 1727 92.84      
6 A 1590 1572 98.68      
7 A 1485 1468 14.81      
8 A 1228 1214 4.92      
9 A 1155 1142 7.80      
10 A 519 513 119.78      
11 A 365 361 143.77      
12 A 184 182 33.32      
13 A 171 169 0.11      
14 A 77 76 47.24      
15 A 62 61 174.06      

Unscaled Zero Point Vibrational Energy (zpe) 10884.4 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 10760.3 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 PBEPBE_cp_opt/6-31+G**
ABC
1.30962 0.16219 0.14435

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.059 -0.401 -0.008
O2 1.845 0.188 -0.015
O3 -0.900 -0.680 -0.003
H4 2.611 -0.398 0.099
C5 -1.349 0.458 0.005
H6 -0.680 1.350 0.021
H7 -2.450 0.644 -0.002

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.98181.97901.55632.55672.46773.6609
O20.98182.87900.97143.20552.77984.3187
O31.97902.87903.52451.22352.04202.0383
H41.55630.97143.52454.05333.72775.1683
C52.55673.20551.22354.05331.11511.1161
H62.46772.77982.04203.72771.11511.9052
H73.66094.31872.03835.16831.11611.9052

picture of water formaldehyde dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.644 H1 O3 C5 103.415
O2 H1 O3 151.292 O3 C5 H6 121.591
O3 C5 H7 121.135 H6 C5 H7 117.274
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability