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All results from a given calculation for HSSSH (trisulfane)

using model chemistry: MP2=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-1194.277420
Energy at 298.15K-1194.279869
HF Energy-1193.722671
Nuclear repulsion energy197.216163
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/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 2755 2589 0.06      
2 A 908 853 0.15      
3 A 524 492 0.43      
4 A 321 302 24.41      
5 A 214 201 0.00      
6 B 2754 2589 0.48      
7 B 895 841 10.09      
8 B 525 493 21.79      
9 B 347 326 18.24      

Unscaled Zero Point Vibrational Energy (zpe) 4620.7 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 4343.0 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 MP2=FULL/6-31G(2df,p)
ABC
0.47022 0.09206 0.07946

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.837
S2 0.000 1.647 -0.383
S3 0.000 -1.647 -0.383
H4 -1.323 1.746 -0.566
H5 1.323 -1.746 -0.566

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.05002.05002.60112.6011
S22.05003.29391.33903.6459
S32.05003.29393.64591.3390
H42.60111.33903.64594.3803
H52.60113.64591.33904.3803

picture of trisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.069 S1 S3 H5 98.069
S2 S1 S3 106.909
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-1194.277243
Energy at 298.15K-1194.279713
HF Energy-1193.722445
Nuclear repulsion energy197.299075
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/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 2750 2584 0.20      
2 A' 912 857 3.72      
3 A' 524 493 0.43      
4 A' 348 327 18.48      
5 A' 215 202 0.05      
6 A" 2752 2587 0.00      
7 A" 898 844 7.42      
8 A" 526 495 23.70      
9 A" 334 314 10.47      

Unscaled Zero Point Vibrational Energy (zpe) 4629.1 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 4350.9 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=FULL/6-31G(2df,p)
ABC
0.47079 0.09213 0.07953

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.053 0.835 0.000
S2 -0.053 -0.386 1.646
S3 -0.053 -0.386 -1.646
H4 1.273 -0.513 1.785
H5 1.273 -0.513 -1.785

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.04902.04902.60042.6004
S22.04903.29101.33923.6803
S32.04903.29103.68031.3392
H42.60041.33923.68033.5706
H52.60043.68031.33923.5706

picture of trisulfane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.069 S1 S3 H5 98.069
S2 S1 S3 106.851
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability