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All results from a given calculation for HSSSH (trisulfane)

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 trans 1A
1 2 no CS cis 1A'

Conformer 1 (C2 trans)

Jump to S1C2
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-1193.738457
Energy at 298.15K-1193.740397
HF Energy-1193.566682
Nuclear repulsion energy179.147104
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 MP2/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 2500 2392 0.36      
2 A 800 766 0.00      
3 A 395 378 1.40      
4 A 261 249 42.60      
5 A 161 154 0.02      
6 B 2501 2393 56.35      
7 B 795 760 5.46      
8 B 403 386 13.38      
9 B 281 269 27.63      

Unscaled Zero Point Vibrational Energy (zpe) 4048.4 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 3873.5 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 MP2/6-31G
ABC
0.37339 0.07652 0.06529

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.947
S2 0.000 1.810 -0.433
S3 0.000 -1.810 -0.433
H4 -1.363 1.866 -0.649
H5 1.363 -1.866 -0.649

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.27662.27662.80862.8086
S22.27663.62041.38103.9270
S32.27663.62043.92701.3810
H42.80861.38103.92704.6221
H52.80863.92701.38104.6221

picture of trisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 97.295 S1 S3 H5 97.295
S2 S1 S3 105.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-1193.737405
Energy at 298.15K-1193.739331
HF Energy-1193.565448
Nuclear repulsion energy178.999085
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 MP2/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2490 2382 72.60      
2 A' 799 765 6.48      
3 A' 394 377 1.11      
4 A' 282 270 32.62      
5 A' 163 156 0.25      
6 A" 2490 2382 0.11      
7 A" 800 766 1.38      
8 A" 404 387 15.89      
9 A" 246 235 14.34      

Unscaled Zero Point Vibrational Energy (zpe) 4033.9 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 3859.6 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 MP2/6-31G
ABC
0.37726 0.07604 0.06507

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.055 0.940 0.000
S2 -0.055 -0.436 1.814
S3 -0.055 -0.436 -1.814
H4 1.316 -0.550 1.950
H5 1.316 -0.550 -1.950

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.27642.27642.81112.8111
S22.27643.62771.38244.0073
S32.27643.62774.00731.3824
H42.81111.38244.00733.8999
H52.81114.00731.38243.8999

picture of trisulfane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 97.390 S1 S3 H5 97.390
S2 S1 S3 105.653
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability