return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for HDO (Water-d1)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-76.136591
Energy at 298.15K-76.136068
HF Energy-76.009535
Nuclear repulsion energy8.980355
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/SDD
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' 3781 3650 16.91      
2 A' 2734 2639 5.55      
3 A' 1425 1375 87.75      

Unscaled Zero Point Vibrational Energy (zpe) 3970.2 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 3832.5 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/SDD
ABC
25.00135 8.27815 6.21899

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.111 0.000
H2 0.804 -0.446 0.000
H3 -0.804 -0.446 0.000

Atom - Atom Distances (Å)
  O1 H2 H3
O10.97870.9787
H20.97871.6088
H30.97871.6088

picture of Water-d1 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 110.557
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability