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

using model chemistry: B3LYP_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 B3LYP_cp_opt/6-31+G**
 hartrees
Energy at 0K-190.953135
Energy at 298.15K-190.955902
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/6-31+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 3905 3766 105.40      
2 A 3710 3577 228.92      
3 A 3032 2924 70.65      
4 A 2947 2842 55.14      
5 A 1802 1737 105.63      
6 A 1624 1566 105.25      
7 A 1534 1479 18.51      
8 A 1270 1224 7.96      
9 A 1204 1161 5.78      
10 A 512 494 135.14      
11 A 361 348 141.66      
12 A 181 175 32.45      
13 A 168 162 0.02      
14 A 69 66 52.75      
15 A 53 51 179.30      

Unscaled Zero Point Vibrational Energy (zpe) 11186.2 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 10785.7 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 B3LYP_cp_opt/6-31+G**
ABC
1.34231 0.15983 0.14284

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.081 -0.398 -0.006
O2 1.858 0.186 -0.009
O3 -0.903 -0.672 -0.002
H4 2.630 -0.386 0.064
C5 -1.364 0.451 0.003
H6 -0.712 1.343 0.013
H7 -2.456 0.622 -0.001

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97222.00281.55082.58832.50003.6816
O20.97222.89120.96383.23262.81874.3362
O32.00282.89123.54541.21432.02472.0218
H41.55080.96383.54544.08123.76365.1858
C52.58833.23261.21434.08121.10481.1058
H62.50002.81872.02473.76361.10481.8876
H73.68164.33622.02185.18581.10581.8876

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 106.457 H1 O3 C5 104.446
O2 H1 O3 150.900 O3 C5 H6 121.554
O3 C5 H7 121.178 H6 C5 H7 117.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability