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

using model chemistry: HF_cp_opt/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-189.978262
Energy at 298.15K-189.980887
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/6-311+G(3df,2pd)
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 4231 3850 147.89      
2 A 4104 3735 119.88      
3 A 3186 2900 64.66      
4 A 3105 2826 58.35      
5 A 1984 1806 155.16      
6 A 1761 1603 99.87      
7 A 1650 1502 31.93      
8 A 1376 1252 19.13      
9 A 1348 1227 3.82      
10 A 452 411 123.14      
11 A 328 298 103.35      
12 A 148 135 30.64      
13 A 144 131 0.01      
14 A 65 59 48.12      
15 A 61 56 156.09      

Unscaled Zero Point Vibrational Energy (zpe) 11971.7 cm-1
Scaled (by 0.91) Zero Point Vibrational Energy (zpe) 10894.3 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/6-311+G(3df,2pd)
ABC
1.41410 0.14962 0.13531

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF_cp_opt/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.177 -0.402 -0.000
O2 -1.923 0.176 -0.000
O3 0.955 -0.653 -0.000
H4 -2.687 -0.370 0.001
C5 1.397 0.441 0.000
H6 0.753 1.321 0.000
H7 2.473 0.622 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.94392.14601.51062.70852.58713.7909
O20.94392.99420.93923.33012.90994.4183
O32.14602.99423.65261.18041.98441.9828
H41.51060.93923.65264.16373.83275.2546
C52.70853.33011.18044.16371.09041.0913
H62.58712.90991.98443.83271.09041.8572
H73.79094.41831.98285.25461.09131.8572

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 106.677 H1 O3 C5 105.307
O2 H1 O3 148.907 O3 C5 H6 121.768
O3 C5 H7 121.532 H6 C5 H7 116.700
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability