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All results from a given calculation for HSSSH (trisulfane)

using model chemistry: MP2/3-21G

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 MP2/3-21G
 hartrees
Energy at 0K-1187.989419
Energy at 298.15K-1187.991326
HF Energy-1187.809302
Nuclear repulsion energy177.691844
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 MP2/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 2454 2342 0.12      
2 A 798 761 0.15      
3 A 393 375 1.48      
4 A 253 242 40.50      
5 A 150 143 0.24      
6 B 2455 2343 30.84      
7 B 796 760 3.75      
8 B 404 386 9.36      
9 B 272 260 29.10      

Unscaled Zero Point Vibrational Energy (zpe) 3987.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 3805.9 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 MP2/3-21G
ABC
0.34676 0.07697 0.06474

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.986
S2 0.000 1.806 -0.452
S3 0.000 -1.806 -0.452
H4 -1.360 1.820 -0.656
H5 1.360 -1.820 -0.656

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.30882.30882.80332.8033
S22.30883.61241.37503.8782
S32.30883.61243.87821.3750
H42.80331.37503.87824.5437
H52.80333.87821.37504.5437

picture of trisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 95.761 S1 S3 H5 95.761
S2 S1 S3 102.944
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-1187.988295
Energy at 298.15K-1187.990176
HF Energy-1187.807978
Nuclear repulsion energy177.478142
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 MP2/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2443 2332 42.99      
2 A' 799 763 5.47      
3 A' 392 374 1.05      
4 A' 271 258 30.99      
5 A' 153 146 0.11      
6 A" 2444 2332 0.05      
7 A" 798 762 0.47      
8 A" 405 386 11.78      
9 A" 232 221 15.20      

Unscaled Zero Point Vibrational Energy (zpe) 3968.4 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 3787.8 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 MP2/3-21G
ABC
0.35119 0.07630 0.06443

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.055 0.977 0.000
S2 -0.055 -0.454 1.812
S3 -0.055 -0.454 -1.812
H4 1.314 -0.555 1.910
H5 1.314 -0.555 -1.910

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.30882.30882.80552.8055
S22.30883.62391.37633.9672
S32.30883.62393.96721.3763
H42.80551.37633.96723.8204
H52.80553.96721.37633.8204

picture of trisulfane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 95.836 S1 S3 H5 95.836
S2 S1 S3 103.403
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability