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All results from a given calculation for HCOOHH2O (Formic acid water dimer)

using model chemistry: MP2_cp/aug-cc-pVTZ

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_cp/aug-cc-pVTZ
 hartrees
Energy at 0K-265.830514
Energy at 298.15K 
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 MP2/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP2/aug-cc-pVTZ
ABC
0.39097 0.16649 0.11744

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.732 0.424 -0.003
O2 -0.188 0.755 -0.001
O3 2.410 -0.237 0.000
C4 -1.025 -0.294 -0.001
O5 -2.223 -0.181 0.001
H6 -0.507 -1.264 -0.004
H7 2.968 -0.050 -0.761
H8 2.961 -0.045 0.766

Atom - Atom Distances (Å)
  H1 O2 O3 C4 O5 H6 H7 H8
H10.97731.80381.89783.01652.09442.40812.4047
O20.97732.78091.34222.24062.04453.34423.3385
O31.80382.78093.43534.63363.09300.96260.9626
C41.89781.34223.43531.20371.09954.07154.0668
O53.01652.24064.63361.20372.02895.24835.2424
H62.09442.04453.09301.09952.02893.75833.7564
H72.40813.34420.96264.07155.24833.75831.5274
H82.40473.33850.96264.06685.24243.75641.5274

picture of Formic acid water dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.349      
2 O -0.361      
3 O -0.421      
4 C 0.032      
5 O -0.596      
6 H 0.547      
7 H 0.225      
8 H 0.225      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  7.099 -1.049 -0.004 7.176
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000