return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HSSSH (trisulfane)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-1188.558304
Energy at 298.15K-1188.560718
HF Energy-1188.149771
Nuclear repulsion energy195.868176
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 CCD/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 2698 2581 0.83      
2 A 945 904 0.52      
3 A 493 472 0.98      
4 A 316 302 30.25      
5 A 216 207 0.00      
6 B 2698 2581 14.40      
7 B 935 894 12.54      
8 B 495 474 14.01      
9 B 348 333 22.12      

Unscaled Zero Point Vibrational Energy (zpe) 4571.8 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 4372.9 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 CCD/3-21G*
ABC
0.45915 0.09117 0.07849

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.848
S2 0.000 1.655 -0.387
S3 0.000 -1.655 -0.387
H4 -1.327 1.750 -0.597
H5 1.327 -1.750 -0.597

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.06542.06542.62892.6289
S22.06543.31041.34653.6601
S32.06543.31043.66011.3465
H42.62891.34653.66014.3912
H52.62893.66011.34654.3912

picture of trisulfane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.605 S1 S3 H5 98.605
S2 S1 S3 106.531
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-1188.557842
Energy at 298.15K-1188.560264
HF Energy-1188.149245
Nuclear repulsion energy195.879585
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 CCD/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' 2691 2574 19.87      
2 A' 949 908 8.08      
3 A' 494 472 0.87      
4 A' 346 331 22.52      
5 A' 218 209 0.21      
6 A" 2692 2575 1.36      
7 A" 940 899 7.98      
8 A" 496 475 16.20      
9 A" 321 307 12.30      

Unscaled Zero Point Vibrational Energy (zpe) 4572.9 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 4374.0 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 CCD/3-21G*
ABC
0.46081 0.09106 0.07846

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.053 0.845 0.000
S2 -0.053 -0.389 1.655
S3 -0.053 -0.389 -1.655
H4 1.278 -0.528 1.803
H5 1.278 -0.528 -1.803

Atom - Atom Distances (Å)
  S1 S2 S3 H4 H5
S12.06472.06472.62852.6285
S22.06473.31001.34703.7078
S32.06473.31003.70781.3470
H42.62851.34703.70783.6053
H52.62853.70781.34703.6053

picture of trisulfane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 H4 98.599 S1 S3 H5 98.599
S2 S1 S3 106.559
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability