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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CCSD(T)/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD(T)/TZVP
 hartrees
Energy at 0K-835.758059
Energy at 298.15K 
HF Energy-835.270036
Nuclear repulsion energy140.728601
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 CCSD(T)/TZVP
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 3108 2992        
2 A 2717 2615        
3 A 1448 1394        
4 A 1209 1163        
5 A 912 877        
6 A 643 619        
7 A 299 287        
8 A 223 215        
9 B 3172 3053        
10 B 2716 2614        
11 B 1300 1252        
12 B 1019 981        
13 B 770 741        
14 B 717 690        
15 B 255 245        

Unscaled Zero Point Vibrational Energy (zpe) 10253.2 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 9868.7 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 CCSD(T)/TZVP
ABC
0.88450 0.10365 0.09708

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.782
S2 0.000 1.558 -0.181
S3 0.000 -1.558 -0.181
H4 0.881 -0.054 1.420
H5 -0.881 0.054 1.420
H6 1.117 1.286 -0.876
H7 -1.117 -1.286 -0.876

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83161.83161.08891.08892.37812.3781
S21.83163.11612.43662.36611.34413.1343
S31.83163.11612.36612.43663.13431.3441
H41.08892.43662.36611.76602.66933.2840
H51.08892.36612.43661.76603.28402.6693
H62.37811.34413.13432.66933.28403.4080
H72.37813.13431.34413.28402.66933.4080

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.757 C1 S3 H7 95.757
S2 C1 S3 116.562 S2 C1 H4 110.495
S2 C1 H5 105.379 S3 C1 H4 105.379
S3 C1 H5 110.495 H4 C1 H5 108.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability