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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-835.891202
Energy at 298.15K 
HF Energy-835.301028
Nuclear repulsion energy141.880649
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/aug-cc-pVTZ
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 3104 2988 6.31      
2 A 2723 2621 0.06      
3 A 1481 1425 0.85      
4 A 1223 1177 0.48      
5 A 920 885 3.64      
6 A 655 630 2.74      
7 A 295 284 7.34      
8 A 220 212 3.74      
9 B 3160 3041 1.25      
10 B 2723 2620 0.30      
11 B 1283 1234 22.07      
12 B 1022 984 16.22      
13 B 791 762 17.27      
14 B 725 698 0.52      
15 B 237 229 30.65      

Unscaled Zero Point Vibrational Energy (zpe) 10281.2 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 9894.7 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/aug-cc-pVTZ
ABC
0.88293 0.10616 0.09917

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.785
S2 0.000 1.540 -0.180
S3 0.000 -1.540 -0.180
H4 0.880 -0.051 1.422
H5 -0.880 0.051 1.422
H6 1.099 1.261 -0.896
H7 -1.099 -1.261 -0.896

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81721.81721.08731.08732.37152.3715
S21.81723.07942.42252.35741.34053.0928
S31.81723.07942.35742.42253.09281.3405
H41.08732.42252.35741.76322.67203.2791
H51.08732.35742.42251.76323.27912.6720
H62.37151.34053.09282.67203.27913.3455
H72.37153.09281.34053.27912.67203.3455

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.185 C1 S3 H7 96.185
S2 C1 S3 115.838 S2 C1 H4 110.506
S2 C1 H5 105.753 S3 C1 H4 105.753
S3 C1 H5 110.506 H4 C1 H5 108.344
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability