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

using model chemistry: CCSD(T)_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 CCSD(T)_cp_opt/6-31+G**
 hartrees
Energy at 0K-190.467932
Energy at 298.15K-190.470680
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 CCSD(T)_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 3968 3808        
2 A 3813 3659        
3 A 3121 2995        
4 A 3028 2906        
5 A 1761 1690        
6 A 1657 1590        
7 A 1559 1496        
8 A 1286 1234        
9 A 1200 1152        
10 A 470 451        
11 A 327 314        
12 A 172 165        
13 A 159 153        
14 A 83 80        
15 A 80 77        

Unscaled Zero Point Vibrational Energy (zpe) 11341.5 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 10883.3 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 CCSD(T)_cp_opt/6-31+G**
ABC
1.27540 0.15851 0.14099

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)_cp_opt/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.127 -0.455 -0.001
O2 1.863 0.174 -0.001
O3 -0.957 -0.688 0.000
H4 2.666 -0.356 0.004
C5 -1.335 0.479 0.000
H6 -0.620 1.313 0.004
H7 -2.405 0.730 -0.003

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96782.09751.54182.63322.48563.7254
O20.96782.94880.96233.21202.73154.3035
O32.09752.94883.63831.22652.02902.0262
H41.54180.96233.63834.08693.68545.1856
C52.63323.21201.22654.08691.09821.0990
H62.48562.73152.02903.68541.09821.8775
H73.72544.30352.02625.18561.09901.8775

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 106.034 H1 O3 C5 101.549
O2 H1 O3 145.836 O3 C5 H6 121.472
O3 C5 H7 121.120 H6 C5 H7 117.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability