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 OH (Hydroxyl radical)

using model chemistry: MP4=FULL/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Π
Energy calculated at MP4=FULL/SDD
 hartrees
Energy at 0K-75.494242
Energy at 298.15K-75.493989
HF Energy-75.385463
Nuclear repulsion energy4.227232
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 MP4=FULL/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 Σ 3483 3483        

Unscaled Zero Point Vibrational Energy (zpe) 1741.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1741.7 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 MP4=FULL/SDD
B
17.74327

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/SDD

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.111
H2 0.000 0.000 -0.890

Atom - Atom Distances (Å)
  O1 H2
O11.0011
H21.0011

picture of Hydroxyl radical state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability