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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-190.532632
Energy at 298.15K-190.535449
HF Energy-189.970972
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.627903
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 MP2/TZVP
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 3948 3743 98.17      
2 A 3777 3580 145.84      
3 A 3114 2951 65.85      
4 A 3020 2863 53.65      
5 A 1756 1665 50.67      
6 A 1641 1556 70.78      
7 A 1575 1493 20.50      
8 A 1304 1236 7.14      
9 A 1224 1161 4.87      
10 A 490 465 141.43      
11 A 344 326 126.05      
12 A 177 168 34.53      
13 A 165 156 0.37      
14 A 104 99 46.61      
15 A 63 59 161.25      

Unscaled Zero Point Vibrational Energy (zpe) 11351.4 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 10760.0 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 MP2/TZVP
ABC
1.28852 0.16577 0.14708

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.102 -0.446 -0.066
O2 1.857 0.156 -0.070
O3 -0.943 -0.679 -0.010
H4 2.492 -0.260 0.516
C5 -1.318 0.476 0.020
H6 -0.606 1.310 0.045
H7 -2.388 0.728 0.026

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96522.05961.51792.59192.45273.6833
O20.96522.92250.95893.19272.72254.2840
O32.05962.92253.50051.21442.01802.0164
H41.51790.95893.50053.91223.50485.0024
C52.59193.19271.21443.91221.09731.0985
H62.45272.72252.01803.50481.09731.8743
H73.68334.28402.01645.00241.09851.8743

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 104.164 H1 O3 C5 101.544
O2 H1 O3 147.889 O3 C5 H6 121.526
O3 C5 H7 121.263 H6 C5 H7 117.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability