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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: PBEPBE/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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-836.462144
Energy at 298.15K 
HF Energy-836.462144
Nuclear repulsion energy140.704265
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 PBEPBE/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 210 207 4.21 7.55 0.51 0.68
2 A 291 288 12.62 3.84 0.54 0.70
3 A 617 611 2.90 12.35 0.17 0.29
4 A 872 863 3.62 7.99 0.27 0.42
5 A 1154 1142 0.73 13.23 0.66 0.80
6 A 1394 1380 0.96 14.35 0.75 0.86
7 A 2623 2596 0.45 106.01 0.11 0.20
8 A 3016 2985 5.80 88.81 0.09 0.16
9 B 249 246 39.76 0.24 0.75 0.86
10 B 683 676 2.85 1.04 0.75 0.86
11 B 724 716 35.41 5.21 0.75 0.86
12 B 967 957 17.01 5.39 0.75 0.86
13 B 1203 1190 29.92 2.76 0.75 0.86
14 B 2622 2595 0.92 72.21 0.75 0.86
15 B 3078 3046 0.99 60.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9850.5 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 9749.0 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 PBEPBE/6-31G(2df,p)
ABC
0.88576 0.10378 0.09725

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.777
S2 0.000 1.557 -0.179
S3 0.000 -1.557 -0.179
H4 0.888 -0.060 1.423
H5 -0.888 0.060 1.423
H6 1.120 1.287 -0.894
H7 -1.120 -1.287 -0.894

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82671.82671.09961.09962.38782.3878
S21.82673.11362.44292.36521.35603.1385
S31.82673.11362.36522.44293.13851.3560
H41.09962.44292.36521.77952.69003.3021
H51.09962.36522.44291.77953.30212.6900
H62.38781.35603.13852.69003.30213.4112
H72.38783.13851.35603.30212.69003.4112

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.094 C1 S3 H7 96.094
S2 C1 S3 116.909 S2 C1 H4 110.727
S2 C1 H5 105.124 S3 C1 H4 105.124
S3 C1 H5 110.727 H4 C1 H5 108.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.237      
2 S -0.245      
3 S -0.245      
4 H 0.179      
5 H 0.179      
6 H 0.184      
7 H 0.184      


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 0.454 0.454
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.436 1.494 0.000
y 1.494 -38.539 0.000
z 0.000 0.000 -32.093
Traceless
 xyz
x 3.881 1.494 0.000
y 1.494 -6.775 0.000
z 0.000 0.000 2.894
Polar
3z2-r25.788
x2-y27.104
xy1.494
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.894 0.208 0.000
y 0.208 9.127 0.000
z 0.000 0.000 6.167


<r2> (average value of r2) Å2
<r2> 116.500
(<r2>)1/2 10.794