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

using model chemistry: B3LYP_cp_opt/3-21G

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/3-21G
 hartrees
Energy at 0K-189.842478
Energy at 298.15K-189.845096
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/3-21G
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 3530 3407 23.82      
2 A 3369 3251 149.75      
3 A 2998 2893 131.10      
4 A 2938 2835 33.49      
5 A 1748 1687 54.86      
6 A 1724 1664 43.74      
7 A 1570 1514 21.74      
8 A 1280 1235 8.76      
9 A 1223 1180 6.90      
10 A 525 506 195.87      
11 A 351 339 115.79      
12 A 176 170 20.76      
13 A 145 140 3.40      
14 A 38 37 132.56      
15 A 26 25 27.57      

Unscaled Zero Point Vibrational Energy (zpe) 10820.8 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 10441.0 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/3-21G
ABC
1.55750 0.13836 0.12707

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.096 -0.183 -0.006
O2 2.013 0.218 -0.004
O3 -0.831 -0.618 -0.002
H4 2.623 -0.568 0.031
C5 -1.559 0.374 0.002
H6 -1.165 1.404 0.006
H7 -2.659 0.304 0.001

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H11.00121.97561.57482.71292.76273.7866
O21.00122.96480.99523.57573.39264.6732
O31.97562.96483.45431.23062.04952.0475
H41.57480.99523.45434.28664.27065.3534
C52.71293.57571.23064.28661.10261.1023
H62.76273.39262.04954.27061.10261.8551
H73.78664.67322.04755.35341.10231.8551

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 104.146 H1 O3 C5 113.542
O2 H1 O3 169.093 O3 C5 H6 122.816
O3 C5 H7 122.621 H6 C5 H7 114.563
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability