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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CCSD=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-835.822645
Energy at 298.15K 
HF Energy-835.230946
Nuclear repulsion energy142.296573
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=FULL/6-31G(2df,p)
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 3145 2961 4.93      
2 A 2759 2598 0.19      
3 A 1499 1411 0.99      
4 A 1239 1167 0.50      
5 A 930 876 4.30      
6 A 666 627 3.17      
7 A 304 286 12.47      
8 A 233 220 4.72      
9 B 3204 3017 0.58      
10 B 2758 2597 0.27      
11 B 1298 1222 22.81      
12 B 1034 974 19.80      
13 B 814 767 17.30      
14 B 731 688 0.58      
15 B 251 237 35.73      

Unscaled Zero Point Vibrational Energy (zpe) 10432.1 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 9822.9 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 CCSD=FULL/6-31G(2df,p)
ABC
0.89227 0.10667 0.09969

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.778
S2 0.000 1.536 -0.179
S3 0.000 -1.536 -0.179
H4 0.876 -0.052 1.420
H5 -0.876 0.052 1.420
H6 1.095 1.262 -0.896
H7 -1.095 -1.262 -0.896

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.80961.80961.08751.08752.36542.3654
S21.80963.07202.41792.35071.33763.0891
S31.80963.07202.35072.41793.08911.3376
H41.08752.41792.35071.75522.67243.2734
H51.08752.35072.41791.75523.27342.6724
H62.36541.33763.08912.67243.27343.3416
H72.36543.08911.33763.27342.67243.3416

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.301 C1 S3 H7 96.301
S2 C1 S3 116.166 S2 C1 H4 110.668
S2 C1 H5 105.755 S3 C1 H4 105.755
S3 C1 H5 110.668 H4 C1 H5 107.603
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability