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All results from a given calculation for OCS (Carbonyl sulfide)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-31.286732
Energy at 298.15K-31.286417
HF Energy-31.025826
Nuclear repulsion energy24.745171
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/CEP-31G
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 1905 1841 504.00 31.94 0.16 0.28
2 Σ 796 769 5.16 39.85 0.32 0.48
3 Π 434 420 1.37 3.93 0.75 0.86
3 Π 434 420 1.37 3.93 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1785.0 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 1724.8 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/CEP-31G
B
0.18284

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.550
O2 0.000 0.000 -1.774
S3 0.000 0.000 1.093

Atom - Atom Distances (Å)
  C1 O2 S3
C11.22441.6432
O21.22442.8676
S31.64322.8676

picture of Carbonyl sulfide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 S3 180.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability