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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD(T)/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD(T)/Def2TZVPP
 hartrees
Energy at 0K-835.895780
Energy at 298.15K 
HF Energy-835.289950
Nuclear repulsion energy141.870890
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)/Def2TZVPP
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 3086 3086        
2 A 2715 2715        
3 A 1455 1455        
4 A 1203 1203        
5 A 908 908        
6 A 642 642        
7 A 295 295        
8 A 213 213        
9 B 3144 3144        
10 B 2714 2714        
11 B 1262 1262        
12 B 1006 1006        
13 B 775 775        
14 B 713 713        
15 B 235 235        

Unscaled Zero Point Vibrational Energy (zpe) 10183.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10183.2 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)/Def2TZVPP
ABC
0.88448 0.10608 0.09907

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/Def2TZVPP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.785
S2 0.000 1.541 -0.180
S3 0.000 -1.541 -0.180
H4 0.880 -0.055 1.422
H5 -0.880 0.055 1.422
H6 1.089 1.252 -0.902
H7 -1.089 -1.252 -0.902

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81751.81751.08861.08862.36602.3660
S21.81753.08152.42632.35591.33833.0834
S31.81753.08152.35592.42633.08341.3383
H41.08862.42632.35591.76412.67483.2734
H51.08862.35592.42631.76413.27342.6748
H62.36601.33833.08342.67483.27343.3185
H72.36603.08341.33833.27342.67483.3185

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.940 C1 S3 H7 95.940
S2 C1 S3 115.928 S2 C1 H4 110.695
S2 C1 H5 105.563 S3 C1 H4 105.563
S3 C1 H5 110.695 H4 C1 H5 108.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability