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

using model chemistry: B3LYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-190.946892
Energy at 298.15K-190.950188
HF Energy-190.946892
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy69.321824
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/6-31G(2df,p)
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 3874 3739 59.23      
2 A 3727 3596 135.06      
3 A 3005 2900 58.16      
4 A 2919 2817 72.00      
5 A 1816 1752 86.55      
6 A 1688 1629 58.88      
7 A 1524 1471 16.44      
8 A 1275 1231 7.06      
9 A 1219 1176 2.55      
10 A 593 572 198.83      
11 A 322 310 52.61      
12 A 233 225 46.33      
13 A 201 194 75.04      
14 A 195 188 23.79      
15 A 154 148 34.75      

Unscaled Zero Point Vibrational Energy (zpe) 11371.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10973.6 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/6-31G(2df,p)
ABC
1.23756 0.17263 0.15356

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.058 -0.495 -0.122
O2 1.814 0.110 -0.096
O3 -0.946 -0.678 0.002
H4 2.184 -0.023 0.781
C5 -1.238 0.493 0.011
H6 -0.463 1.280 -0.010
H7 -2.295 0.825 0.040

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96852.01531.51942.50262.34003.6064
O20.96852.87120.96173.07772.56154.1724
O32.01532.87123.29121.20622.01632.0198
H41.51940.96173.29123.54573.05464.6183
C52.50263.07771.20623.54571.10511.1080
H62.34002.56152.01633.05461.10511.8878
H73.60644.17242.01984.61831.10801.8878

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 103.836 H1 O3 C5 98.835
O2 H1 O3 146.200 O3 C5 H6 121.403
O3 C5 H7 121.514 H6 C5 H7 117.083
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability