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

using model chemistry: CCSD(T)/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)/6-31+G**
 hartrees
Energy at 0K-190.469644
Energy at 298.15K-190.472426
HF Energy-189.909658
Counterpoise corrected energy-190.467932
CP Energy at 298.15K-190.470680
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.461367
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)/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 3962 3802        
2 A 3796 3643        
3 A 3124 2998        
4 A 3030 2907        
5 A 1758 1687        
6 A 1656 1589        
7 A 1556 1494        
8 A 1288 1236        
9 A 1200 1151        
10 A 497 477        
11 A 350 335        
12 A 187 179        
13 A 164 158        
14 A 101 96        
15 A 41 39        

Unscaled Zero Point Vibrational Energy (zpe) 11353.9 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 10895.2 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)/6-31+G**
ABC
1.26874 0.16685 0.14746

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.079 -0.458 -0.001
O2 -1.814 0.174 -0.001
O3 0.934 -0.690 -0.000
H4 -2.619 -0.353 0.004
C5 1.299 0.481 0.000
H6 0.575 1.306 0.001
H7 2.367 0.742 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96872.02641.54292.55752.41813.6491
O20.96872.87990.96253.12812.64294.2189
O32.02642.87993.56831.22702.02812.0258
H41.54290.96253.56834.00603.59885.1045
C52.55753.12811.22704.00601.09801.0988
H62.41812.64292.02813.59881.09801.8791
H73.64914.21892.02585.10451.09881.8791

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 106.059 H1 O3 C5 100.765
O2 H1 O3 145.858 O3 C5 H6 121.353
O3 C5 H7 121.049 H6 C5 H7 117.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability