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

using model chemistry: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-190.941333
Energy at 298.15K-190.944632
HF Energy-190.941333
Nuclear repulsion energy69.380585
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 TPSSh/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 3841 3706 49.21      
2 A 3673 3544 149.35      
3 A 3005 2899 63.36      
4 A 2920 2818 76.54      
5 A 1796 1733 82.80      
6 A 1699 1640 55.13      
7 A 1528 1475 16.74      
8 A 1274 1229 6.59      
9 A 1216 1173 3.33      
10 A 602 580 196.12      
11 A 328 316 52.21      
12 A 233 225 41.79      
13 A 203 195 74.89      
14 A 195 188 30.87      
15 A 147 142 27.82      

Unscaled Zero Point Vibrational Energy (zpe) 11328.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10931.8 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 TPSSh/6-31G(2df,p)
ABC
1.22754 0.17445 0.15489

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.042 -0.499 -0.084
O2 1.809 0.098 -0.104
O3 -0.946 -0.679 0.007
H4 2.146 0.052 0.798
C5 -1.228 0.498 0.007
H6 -0.444 1.276 0.008
H7 -2.281 0.839 0.008

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97211.99801.51692.48062.31673.5833
O20.97212.86440.96413.06482.54464.1579
O31.99802.86443.27461.21042.01882.0216
H41.51690.96413.27463.49442.97214.5659
C52.48063.06481.21043.49441.10461.1071
H62.31672.54462.01882.97211.10461.8886
H73.58334.15792.02164.56591.10711.8886

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 103.153 H1 O3 C5 98.276
O2 H1 O3 147.272 O3 C5 H6 121.325
O3 C5 H7 121.392 H6 C5 H7 117.284
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability