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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-831.297836
Energy at 298.15K 
HF Energy-831.297836
Nuclear repulsion energy141.916642
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 HF/3-21G*
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 265 239 10.17 15.67 0.67 0.80
2 A 313 283 19.32 9.62 0.64 0.78
3 A 675 609 3.31 25.78 0.17 0.29
4 A 1016 917 5.19 12.50 0.66 0.80
5 A 1355 1223 1.08 25.81 0.73 0.84
6 A 1630 1471 6.24 21.73 0.75 0.86
7 A 2899 2617 2.91 124.59 0.18 0.30
8 A 3255 2938 7.46 87.01 0.14 0.25
9 B 268 242 44.65 2.24 0.75 0.86
10 B 797 720 8.72 0.64 0.75 0.86
11 B 808 729 11.15 20.84 0.75 0.86
12 B 1137 1026 33.20 6.66 0.75 0.86
13 B 1416 1278 10.20 0.85 0.75 0.86
14 B 2899 2616 6.01 98.49 0.75 0.86
15 B 3308 2985 0.16 68.85 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11019.8 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 9946.4 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 HF/3-21G*
ABC
0.88610 0.10586 0.09893

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.785
S2 0.000 1.541 -0.181
S3 0.000 -1.541 -0.181
H4 0.871 -0.045 1.421
H5 -0.871 0.045 1.421
H6 1.104 1.302 -0.877
H7 -1.104 -1.302 -0.877

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81861.81861.07961.07962.38232.3823
S21.81863.08192.41662.35871.32633.1284
S31.81863.08192.35872.41663.12841.3263
H41.07962.41662.35871.74432.67383.2804
H51.07962.35872.41661.74433.28042.6738
H62.38231.32633.12842.67383.28043.4143
H72.38233.12841.32633.28042.67383.4143

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 97.251 C1 S3 H7 97.251
S2 C1 S3 115.842 S2 C1 H4 110.379
S2 C1 H5 106.129 S3 C1 H4 106.129
S3 C1 H5 110.379 H4 C1 H5 107.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.765      
2 S -0.027      
3 S -0.027      
4 H 0.272      
5 H 0.272      
6 H 0.137      
7 H 0.137      


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 0.416 0.416
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.394 2.155 0.000
y 2.155 -40.096 0.000
z 0.000 0.000 -32.912
Traceless
 xyz
x 4.110 2.155 0.000
y 2.155 -7.442 0.000
z 0.000 0.000 3.332
Polar
3z2-r26.665
x2-y27.702
xy2.155
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.889 0.094 0.000
y 0.094 7.013 0.000
z 0.000 0.000 4.974


<r2> (average value of r2) Å2
<r2> 115.597
(<r2>)1/2 10.752