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All results from a given calculation for HSSSH (trisulfane)

using model chemistry: QCISD(T)/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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-1194.102065
Energy at 298.15K 
HF Energy-1193.683468
Nuclear repulsion energy193.768694
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 QCISD(T)/6-31G*
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.849
S2 0.000 1.680 -0.387
S3 0.000 -1.680 -0.387
H4 -1.333 1.786 -0.590
H5 1.333 -1.786 -0.590

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.08602.08602.65272.6527
S22.08603.36051.35283.7192
S32.08603.36053.71921.3528
H42.65271.35283.71924.4574
H52.65273.71921.35284.4574

picture of trisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.716 S1 S3 H5 98.716
S2 S1 S3 107.316
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-1194.101638
Energy at 298.15K-1194.104003
HF Energy-1193.682959
Nuclear repulsion energy193.786178
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 QCISD(T)/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' 2653 2545        
2 A' 914 877        
3 A' 485 465        
4 A' 344 330        
5 A' 208 199        
6 A" 2654 2546        
7 A" 905 868        
8 A" 487 467        
9 A" 320 307        

Unscaled Zero Point Vibrational Energy (zpe) 4484.5 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 4302.0 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 QCISD(T)/6-31G*
ABC
0.45980 0.08840 0.07647

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.054 0.846 0.000
S2 -0.054 -0.390 1.680
S3 -0.054 -0.390 -1.680
H4 1.284 -0.529 1.833
H5 1.284 -0.529 -1.833

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.08532.08532.65302.6530
S22.08533.35991.35363.7613
S32.08533.35993.76131.3536
H42.65301.35363.76133.6654
H52.65303.76131.35363.6654

picture of trisulfane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.740 S1 S3 H5 98.740
S2 S1 S3 107.341
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability