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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-836.933379
Energy at 298.15K 
HF Energy-836.933379
Nuclear repulsion energy141.420688
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 mPW1PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 237 227 8.52 11.94 0.64 0.78
2 A 302 288 18.77 9.94 0.69 0.82
3 A 647 618 2.82 13.63 0.18 0.30
4 A 914 873 5.64 7.68 0.41 0.58
5 A 1241 1184 2.56 14.67 0.67 0.80
6 A 1470 1403 3.30 12.95 0.73 0.84
7 A 2668 2546 1.80 139.82 0.17 0.29
8 A 3111 2969 10.27 98.17 0.10 0.17
9 B 262 250 46.47 2.78 0.75 0.86
10 B 716 683 3.12 0.70 0.75 0.86
11 B 765 730 39.21 8.49 0.75 0.86
12 B 1028 981 35.14 5.19 0.75 0.86
13 B 1296 1236 25.18 1.73 0.75 0.86
14 B 2667 2545 6.12 100.66 0.75 0.86
15 B 3169 3024 1.48 67.89 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10245.5 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 9778.3 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 mPW1PW91/6-311G*
ABC
0.90227 0.10444 0.09810

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.767
S2 0.000 1.551 -0.179
S3 0.000 -1.551 -0.179
H4 0.875 -0.056 1.411
H5 -0.875 0.056 1.411
H6 1.144 1.313 -0.852
H7 -1.144 -1.313 -0.852

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81611.81611.08851.08852.37762.3776
S21.81613.10122.42372.35141.34813.1565
S31.81613.10122.35142.42373.15651.3481
H41.08852.42372.35141.75442.65873.2834
H51.08852.35142.42371.75443.28342.6587
H62.37761.34813.15652.65873.28343.4830
H72.37763.15651.34813.28342.65873.4830

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.304 C1 S3 H7 96.304
S2 C1 S3 117.258 S2 C1 H4 110.604
S2 C1 H5 105.342 S3 C1 H4 105.342
S3 C1 H5 110.604 H4 C1 H5 107.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.763      
2 S -0.085      
3 S -0.085      
4 H 0.292      
5 H 0.292      
6 H 0.175      
7 H 0.175      


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 0.406 0.406
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.804 2.129 0.000
y 2.129 -39.869 0.000
z 0.000 0.000 -33.072
Traceless
 xyz
x 4.667 2.129 0.000
y 2.129 -7.431 0.000
z 0.000 0.000 2.764
Polar
3z2-r25.529
x2-y28.065
xy2.129
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.489 0.079 0.000
y 0.079 8.673 0.000
z 0.000 0.000 5.501


<r2> (average value of r2) Å2
<r2> 116.336
(<r2>)1/2 10.786