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

using model chemistry: B3LYP_cp_opt/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-191.020827
Energy at 298.15K-191.023536
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/6-311+G(3df,2pd)
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 3903 3786 97.89      
2 A 3717 3606 257.66      
3 A 2992 2902 66.26      
4 A 2916 2828 62.78      
5 A 1806 1751 103.44      
6 A 1644 1595 81.27      
7 A 1531 1485 22.04      
8 A 1274 1236 9.69      
9 A 1212 1175 5.99      
10 A 510 495 90.22      
11 A 361 350 111.54      
12 A 177 171 29.79      
13 A 162 157 0.00      
14 A 66 64 40.86      
15 A 33 32 141.26      

Unscaled Zero Point Vibrational Energy (zpe) 11150.9 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 10816.4 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/6-311+G(3df,2pd)
ABC
1.38133 0.15842 0.14213

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.081 -0.374 -0.004
O2 1.869 0.189 -0.008
O3 -0.895 -0.662 -0.002
H4 2.616 -0.410 0.052
C5 -1.378 0.439 0.003
H6 -0.751 1.346 0.010
H7 -2.471 0.587 0.001

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96801.99691.53672.59012.51293.6800
O20.96802.89180.95963.25642.86404.3584
O31.99692.89183.52071.20302.01362.0113
H41.53670.95963.52074.08393.79795.1847
C52.59013.25641.20304.08391.10241.1033
H62.51292.86402.01363.79791.10241.8806
H73.68004.35842.01135.18471.10331.8806

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 105.724 H1 O3 C5 105.369
O2 H1 O3 152.764 O3 C5 H6 121.659
O3 C5 H7 121.345 H6 C5 H7 116.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability