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: B3LYPultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-836.880362
Energy at 298.15K 
HF Energy-836.880362
Nuclear repulsion energy140.248795
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 B3LYPultrafine/6-31G*
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 232 223 6.34 11.81 0.59 0.75
2 A 298 285 18.87 7.97 0.63 0.77
3 A 627 601 3.58 15.41 0.19 0.33
4 A 910 872 4.16 10.98 0.49 0.66
5 A 1226 1175 1.68 22.74 0.68 0.81
6 A 1483 1421 1.81 17.72 0.75 0.85
7 A 2682 2570 5.96 120.55 0.17 0.29
8 A 3102 2972 9.63 92.91 0.12 0.21
9 B 256 246 45.13 1.19 0.75 0.86
10 B 718 688 9.12 0.17 0.75 0.86
11 B 735 705 29.67 11.56 0.75 0.86
12 B 1022 979 28.76 7.94 0.75 0.86
13 B 1289 1235 30.60 3.78 0.75 0.86
14 B 2682 2569 16.50 99.57 0.75 0.86
15 B 3160 3027 1.64 68.64 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10211.4 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 9782.5 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 B3LYPultrafine/6-31G*
ABC
0.88699 0.10263 0.09626

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.778
S2 0.000 1.565 -0.180
S3 0.000 -1.565 -0.180
H4 0.881 -0.057 1.421
H5 -0.881 0.057 1.421
H6 1.126 1.317 -0.881
H7 -1.126 -1.317 -0.881

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83461.83461.09201.09202.39902.3990
S21.83463.13012.44282.36891.35013.1729
S31.83463.13012.36892.44283.17291.3501
H41.09202.44282.36891.76512.69203.3039
H51.09202.36892.44281.76513.30392.6920
H62.39901.35013.17292.69203.30393.4659
H72.39903.17291.35013.30392.69203.4659

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.567 C1 S3 H7 96.567
S2 C1 S3 117.101 S2 C1 H4 110.588
S2 C1 H5 105.241 S3 C1 H4 105.241
S3 C1 H5 110.588 H4 C1 H5 107.839
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.544      
2 S -0.055      
3 S -0.055      
4 H 0.216      
5 H 0.216      
6 H 0.112      
7 H 0.112      


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 0.436 0.436
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.638 2.021 0.000
y 2.021 -39.163 0.000
z 0.000 0.000 -32.386
Traceless
 xyz
x 4.136 2.021 0.000
y 2.021 -7.151 0.000
z 0.000 0.000 3.015
Polar
3z2-r26.029
x2-y27.525
xy2.021
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.282 0.139 0.000
y 0.139 8.060 0.000
z 0.000 0.000 5.396


<r2> (average value of r2) Å2
<r2> 117.680
(<r2>)1/2 10.848