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All results from a given calculation for H2O (Water)

using model chemistry: QCISD(TQ)/STO-3G

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(TQ)/STO-3G
 hartrees
Energy at 0K-75.023215
Energy at 298.15K-75.024314
HF Energy-74.962548
Nuclear repulsion energy8.577133
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(TQ)/STO-3G
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 3572 3572        
2 A1 2038 2038        
3 B2 3814 3814        

Unscaled Zero Point Vibrational Energy (zpe) 4711.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4711.6 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(TQ)/STO-3G
ABC
20.18034 14.15142 8.31826

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.137
H2 0.000 0.769 -0.546
H3 0.000 -0.769 -0.546

Atom - Atom Distances (Å)
  O1 H2 H3
O11.02841.0284
H21.02841.5375
H31.02841.5375

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 96.751
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability