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

using model chemistry: HF_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 HF_cp_opt/6-31+G**
 hartrees
Energy at 0K-189.912686
Energy at 298.15K-189.915415
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 HF_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 4252 3844 156.68      
2 A 4106 3713 111.94      
3 A 3244 2933 67.79      
4 A 3153 2851 49.04      
5 A 1989 1799 161.60      
6 A 1750 1582 130.03      
7 A 1657 1498 23.74      
8 A 1375 1243 17.72      
9 A 1344 1216 2.22      
10 A 470 425 178.65      
11 A 340 307 130.08      
12 A 164 148 33.00      
13 A 151 137 0.01      
14 A 76 69 194.61      
15 A 71 64 58.28      

Unscaled Zero Point Vibrational Energy (zpe) 12070.9 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 10914.5 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 HF_cp_opt/6-31+G**
ABC
1.38359 0.15273 0.13754

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.164 -0.423 -0.000
O2 -1.900 0.174 -0.000
O3 0.952 -0.661 -0.000
H4 -2.687 -0.345 0.000
C5 1.378 0.450 0.000
H6 0.716 1.316 0.000
H7 2.451 0.647 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.94722.12981.52442.68812.56113.7702
O20.94722.97160.94223.28952.85434.3765
O32.12982.97163.65261.19001.99101.9889
H41.52440.94223.65264.14173.78625.2325
C52.68813.28951.19004.14171.08991.0908
H62.56112.85431.99103.78621.08991.8598
H73.77024.37651.98895.23251.09081.8598

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 107.576 H1 O3 C5 104.554
O2 H1 O3 147.366 O3 C5 H6 121.623
O3 C5 H7 121.326 H6 C5 H7 117.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability