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

using model chemistry: MP2=FULL/aug-cc-pVDZ

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 MP2=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-1084.427635
Energy at 298.15K-1084.427371
HF Energy-1084.046887
Nuclear repulsion energy155.926887
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=FULL/aug-cc-pVDZ
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 511 495 0.00      
2 Σu 923 895 141.63      
3 Πu 184 179 6.67      
3 Πu 184 179 6.67      

Unscaled Zero Point Vibrational Energy (zpe) 901.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 873.3 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=FULL/aug-cc-pVDZ
B
0.06899

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

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 1.955
S3 0.000 0.000 -1.955

Atom - Atom Distances (Å)
  Si1 S2 S3
Si11.95481.9548
S21.95483.9096
S31.95483.9096

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