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All results from a given calculation for SiS2 (Silicon disulfide)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-1084.314230
Energy at 298.15K-1084.313867
HF Energy-1083.977051
Nuclear repulsion energy158.510393
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 536 503 0.00      
2 Σu 947 889 192.75      
3 Πu 150 141 8.62      
3 Πu 150 141 8.62      

Unscaled Zero Point Vibrational Energy (zpe) 891.2 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 836.5 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 MP3/6-31G*
B
0.07130

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.000
S2 0.000 0.000 1.923
S3 0.000 0.000 -1.923

Atom - Atom Distances (Å)
  Si1 S2 S3
Si11.92291.9229
S21.92293.8459
S31.92293.8459

picture of Silicon disulfide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S2 Si1 S3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability