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

using model chemistry: B3LYP_cp_opt/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-191.025177
Energy at 298.15K-191.027919
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 B3LYP_cp_opt/aug-cc-pVTZ
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 3875 3759 97.23      
2 A 3683 3573 269.45      
3 A 2991 2901 66.83      
4 A 2917 2829 64.79      
5 A 1797 1743 104.15      
6 A 1644 1595 79.10      
7 A 1529 1483 23.01      
8 A 1271 1233 9.78      
9 A 1209 1173 5.91      
10 A 512 497 81.08      
11 A 362 351 104.17      
12 A 179 174 29.89      
13 A 163 158 0.06      
14 A 67 65 38.37      
15 A 40 39 133.35      

Unscaled Zero Point Vibrational Energy (zpe) 11119.8 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 10786.2 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 B3LYP_cp_opt/aug-cc-pVTZ
ABC
1.38575 0.15872 0.14244

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.075 -0.368 -0.007
O2 1.867 0.190 -0.015
O3 -0.887 -0.661 -0.004
H4 2.609 -0.409 0.101
C5 -1.382 0.437 0.006
H6 -0.764 1.350 0.021
H7 -2.476 0.573 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96931.98331.53882.58502.51623.6737
O20.96932.88260.96063.25832.87534.3604
O31.98332.88263.50661.20472.01492.0125
H41.53880.96063.50664.08063.80465.1805
C52.58503.25831.20474.08061.10241.1032
H62.51622.87532.01493.80461.10241.8809
H73.67374.36042.01255.18051.10321.8809

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 105.746 H1 O3 C5 105.756
O2 H1 O3 153.334 O3 C5 H6 121.644
O3 C5 H7 121.323 H6 C5 H7 117.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability