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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-190.466242
Energy at 298.15K-190.469491
HF Energy-189.933823
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.815719
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 MP2/6-311G*
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 3964 3767 72.36      
2 A 3811 3622 69.72      
3 A 3112 2958 64.59      
4 A 3011 2861 60.29      
5 A 1772 1684 81.54      
6 A 1760 1673 62.34      
7 A 1564 1487 13.15      
8 A 1299 1234 6.52      
9 A 1220 1159 5.62      
10 A 591 561 272.83      
11 A 322 306 91.00      
12 A 230 218 60.76      
13 A 195 186 33.33      
14 A 181 172 103.63      
15 A 146 138 62.53      

Unscaled Zero Point Vibrational Energy (zpe) 11588.0 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 11012.0 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 MP2/6-311G*
ABC
1.23168 0.16811 0.14962

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.058 -0.453 -0.175
O2 1.822 0.129 -0.083
O3 -0.939 -0.682 -0.004
H4 2.277 -0.143 0.716
C5 -1.261 0.490 0.017
H6 -0.510 1.293 -0.009
H7 -2.323 0.788 0.061

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96472.01771.54122.51172.35283.6093
O20.96472.87860.95873.10612.60714.1990
O32.01772.87863.33961.21602.02102.0196
H41.54120.95873.33963.66223.21804.7386
C52.51173.10611.21603.66221.10001.1029
H62.35282.60712.02103.21801.10001.8831
H73.60934.19902.01964.73861.10291.8831

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 106.506 H1 O3 C5 98.901
O2 H1 O3 147.550 O3 C5 H6 121.455
O3 C5 H7 121.061 H6 C5 H7 117.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability