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All results from a given calculation for H2O (Water)

using model chemistry: QCISD(T)/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)/LANL2DZ
 hartrees
Energy at 0K-76.143005
Energy at 298.15K-76.144101
HF Energy-76.009323
Nuclear repulsion energy8.969913
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 QCISD(T)/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 A1 3638 3470        
2 A1 1635 1560        
3 B2 3819 3643        

Unscaled Zero Point Vibrational Energy (zpe) 4546.5 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 4336.0 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 QCISD(T)/LANL2DZ
ABC
30.01566 12.93824 9.04108

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.112
H2 0.000 0.804 -0.448
H3 0.000 -0.804 -0.448

Atom - Atom Distances (Å)
  O1 H2 H3
O10.97990.9799
H20.97991.6080
H30.97991.6080

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 110.271
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability