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

using model chemistry: CISD/3-21G*

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 CISD/3-21G*
 hartrees
Energy at 0K-508.092700
Energy at 298.15K-508.092575
HF Energy-507.777337
Nuclear repulsion energy78.770596
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 CISD/3-21G*
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 2110 1972 686.73      
2 Σ 876 819 19.06      
3 Π 537 502 10.73      
3 Π 537 502 10.73      

Unscaled Zero Point Vibrational Energy (zpe) 2030.1 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 1897.0 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 CISD/3-21G*
B
0.20018

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.525
O2 0.000 0.000 -1.696
S3 0.000 0.000 1.045

Atom - Atom Distances (Å)
  C1 O2 S3
C11.17051.5701
O21.17052.7406
S31.57012.7406

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
Charges, Dipole, Quadrupole and Polarizability