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All results from a given calculation for HSSSH (trisulfane)

using model chemistry: MP2/6-31G(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 MP2/6-31G(2df,p)
 hartrees
Energy at 0K-1194.214718
Energy at 298.15K-1194.217147
HF Energy-1193.722643
Nuclear repulsion energy196.446133
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(2df,p)
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 2746 2593 0.05      
2 A 904 854 0.13      
3 A 518 489 0.42      
4 A 319 301 24.56      
5 A 212 200 0.00      
6 B 2745 2592 0.47      
7 B 891 841 9.64      
8 B 518 489 21.88      
9 B 344 325 18.13      

Unscaled Zero Point Vibrational Energy (zpe) 4597.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 4342.3 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 MP2/6-31G(2df,p)
ABC
0.46667 0.09131 0.07881

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.841
S2 0.000 1.654 -0.385
S3 0.000 -1.654 -0.385
H4 -1.325 1.753 -0.566
H5 1.325 -1.753 -0.566

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.05842.05842.60972.6097
S22.05843.30741.34113.6602
S32.05843.30743.66021.3411
H42.60971.34113.66024.3955
H52.60973.66021.34114.3955

picture of trisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.067 S1 S3 H5 98.067
S2 S1 S3 106.911
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-1194.214528
Energy at 298.15K-1194.216976
HF Energy-1193.722419
Nuclear repulsion energy196.516012
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(2df,p)
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' 2740 2588 0.18      
2 A' 907 857 3.64      
3 A' 518 490 0.43      
4 A' 345 326 18.60      
5 A' 212 201 0.05      
6 A" 2743 2591        
7 A" 894 845 7.01      
8 A" 519 491 23.79      
9 A" 330 312 10.42      

Unscaled Zero Point Vibrational Energy (zpe) 4605.1 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 4349.5 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(2df,p)
ABC
0.46725 0.09137 0.07886

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.053 0.839 0.000
S2 -0.053 -0.387 1.652
S3 -0.053 -0.387 -1.652
H4 1.275 -0.513 1.793
H5 1.275 -0.513 -1.793

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.05762.05762.60872.6087
S22.05763.30501.34133.6944
S32.05763.30503.69441.3413
H42.60871.34133.69443.5852
H52.60873.69441.34133.5852

picture of trisulfane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.045 S1 S3 H5 98.045
S2 S1 S3 106.860
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability