return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-836.819939
Energy at 298.15K 
HF Energy-836.819939
Nuclear repulsion energy137.318427
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 B3LYP/SDD
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 234 225 12.05 30.27 0.65 0.79
2 A 284 273 24.69 19.35 0.68 0.81
3 A 595 572 6.05 21.63 0.13 0.24
4 A 881 847 2.90 16.03 0.60 0.75
5 A 1226 1179 0.96 22.54 0.75 0.86
6 A 1465 1408 3.57 13.80 0.75 0.86
7 A 2490 2393 8.64 143.36 0.15 0.26
8 A 3133 3011 16.33 108.36 0.06 0.10
9 B 250 241 55.38 10.01 0.75 0.86
10 B 688 661 53.32 11.48 0.75 0.86
11 B 720 692 0.11 3.92 0.75 0.86
12 B 1004 966 21.31 9.25 0.75 0.86
13 B 1291 1241 14.99 1.62 0.75 0.86
14 B 2489 2393 32.24 94.39 0.75 0.86
15 B 3217 3092 3.43 56.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9983.3 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 9596.9 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 B3LYP/SDD
ABC
0.84556 0.09826 0.09218

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.805
S2 0.000 1.599 -0.187
S3 0.000 -1.599 -0.187
H4 0.889 -0.056 1.433
H5 -0.889 0.056 1.433
H6 1.175 1.371 -0.862
H7 -1.175 -1.371 -0.862

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.88101.88101.09021.09022.45702.4570
S21.88103.19712.48042.40701.37423.2639
S31.88103.19712.40702.48043.26391.3742
H41.09022.48042.40701.78172.71753.3549
H51.09022.40702.48041.78173.35492.7175
H62.45701.37423.26392.71753.35493.6109
H72.45703.26391.37423.35492.71753.6109

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.780 C1 S3 H7 96.780
S2 C1 S3 116.385 S2 C1 H4 110.340
S2 C1 H5 105.073 S3 C1 H4 105.073
S3 C1 H5 110.340 H4 C1 H5 109.599
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.824      
2 S 0.024      
3 S 0.024      
4 H 0.291      
5 H 0.291      
6 H 0.097      
7 H 0.097      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.407 0.407
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.718 2.830 0.000
y 2.830 -40.104 0.000
z 0.000 0.000 -32.626
Traceless
 xyz
x 4.647 2.830 0.000
y 2.830 -7.932 0.000
z 0.000 0.000 3.285
Polar
3z2-r26.570
x2-y28.386
xy2.830
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.033 -0.001 0.000
y -0.001 7.998 0.000
z 0.000 0.000 4.870


<r2> (average value of r2) Å2
<r2> 122.216
(<r2>)1/2 11.055