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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-190.188907
Energy at 298.15K-190.191877
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy67.435194
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/LANL2DZ
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 3844 3702 80.75      
2 A 3619 3485 108.14      
3 A 3147 3031 66.04      
4 A 3033 2921 61.27      
5 A 1642 1582 120.14      
6 A 1613 1553 27.80      
7 A 1483 1428 33.64      
8 A 1251 1205 3.58      
9 A 1188 1145 17.23      
10 A 541 521 251.94      
11 A 410 395 178.08      
12 A 198 191 21.59      
13 A 198 190 2.41      
14 A 95 91 68.49      
15 A 70 67 239.07      

Unscaled Zero Point Vibrational Energy (zpe) 11165.7 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 10753.7 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/LANL2DZ
ABC
1.20996 0.16661 0.14644

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.081 -0.492 0.000
O2 -1.807 0.173 -0.000
O3 0.911 -0.710 -0.000
H4 -2.687 -0.251 0.000
C5 1.320 0.496 0.000
H6 0.607 1.337 -0.000
H7 2.401 0.724 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.98422.00431.62342.59642.48923.6879
O20.98422.85780.97693.14342.68004.2432
O32.00432.85783.62701.27292.06942.0672
H41.62340.97693.62704.07573.65685.1798
C52.59643.14341.27294.07571.10281.1043
H62.48922.68002.06943.65681.10281.8953
H73.68794.24322.06725.17981.10431.8953

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 111.745 H1 O3 C5 102.489
O2 H1 O3 143.732 O3 C5 H6 121.002
O3 C5 H7 120.652 H6 C5 H7 118.346
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability