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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: QCISD(T)=FULL/6-311+G(3df,2p)

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)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-836.239129
Energy at 298.15K 
HF Energy-835.289933
Nuclear repulsion energy142.217179
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)=FULL/6-311+G(3df,2p)
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 3089 3089        
2 A 2696 2696        
3 A 1470 1470        
4 A 1214 1214        
5 A 917 917        
6 A 650 650        
7 A 296 296        
8 A 220 220        
9 B 3143 3143        
10 B 2695 2695        
11 B 1271 1271        
12 B 1015 1015        
13 B 785 785        
14 B 719 719        
15 B 238 238        

Unscaled Zero Point Vibrational Energy (zpe) 10208.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10208.5 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)=FULL/6-311+G(3df,2p)
ABC
0.88944 0.10663 0.09966

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.780
S2 0.000 1.536 -0.179
S3 0.000 -1.536 -0.179
H4 0.879 -0.054 1.419
H5 -0.879 0.054 1.419
H6 1.100 1.257 -0.892
H7 -1.100 -1.257 -0.892

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81121.81121.08841.08842.36332.3633
S21.81123.07252.42002.35061.33983.0854
S31.81123.07252.35062.42003.08541.3398
H41.08842.42002.35061.76222.66613.2719
H51.08842.35062.42001.76223.27192.6661
H62.36331.33983.08542.66613.27193.3402
H72.36333.08541.33983.27192.66613.3402

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.030 C1 S3 H7 96.030
S2 C1 S3 116.036 S2 C1 H4 110.666
S2 C1 H5 105.602 S3 C1 H4 105.602
S3 C1 H5 110.666 H4 C1 H5 108.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability