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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-836.698272
Energy at 298.15K 
HF Energy-836.698272
Nuclear repulsion energy137.537763
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 B3PW91/6-31G
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 229 219 11.88 20.99 0.63 0.77
2 A 287 275 29.92 13.38 0.65 0.79
3 A 608 582 5.83 20.45 0.19 0.32
4 A 874 837 5.82 17.88 0.60 0.75
5 A 1221 1169 1.61 26.45 0.70 0.82
6 A 1488 1425 4.92 19.68 0.75 0.86
7 A 2528 2422 11.65 152.43 0.19 0.31
8 A 3146 3013 6.15 97.62 0.10 0.18
9 B 234 225 62.71 3.85 0.75 0.86
10 B 707 677 51.62 7.20 0.75 0.86
11 B 721 691 1.30 8.92 0.75 0.86
12 B 1000 957 31.16 10.51 0.75 0.86
13 B 1291 1236 21.65 3.45 0.75 0.86
14 B 2529 2422 45.12 118.98 0.75 0.86
15 B 3226 3090 0.19 67.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10044.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 9619.1 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 B3PW91/6-31G
ABC
0.84728 0.09868 0.09254

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.803
S2 0.000 1.595 -0.186
S3 0.000 -1.595 -0.186
H4 0.887 -0.055 1.434
H5 -0.887 0.055 1.434
H6 1.170 1.358 -0.871
H7 -1.170 -1.358 -0.871

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.87731.87731.08941.08942.45292.4529
S21.87733.19092.47662.40501.37643.2497
S31.87733.19092.40502.47663.24971.3764
H41.08942.47662.40501.77672.71853.3528
H51.08942.40502.47661.77673.35282.7185
H62.45291.37643.24972.71853.35283.5845
H72.45293.24971.37643.35282.71853.5845

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.646 C1 S3 H7 96.646
S2 C1 S3 116.401 S2 C1 H4 110.350
S2 C1 H5 105.209 S3 C1 H4 105.209
S3 C1 H5 110.350 H4 C1 H5 109.253
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.759      
2 S 0.047      
3 S 0.047      
4 H 0.250      
5 H 0.250      
6 H 0.083      
7 H 0.083      


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 0.486 0.486
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.683 3.038 0.000
y 3.038 -40.812 0.000
z 0.000 0.000 -32.592
Traceless
 xyz
x 5.019 3.038 0.000
y 3.038 -8.674 0.000
z 0.000 0.000 3.655
Polar
3z2-r27.310
x2-y29.129
xy3.038
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.306 0.114 0.000
y 0.114 8.181 0.000
z 0.000 0.000 5.167


<r2> (average value of r2) Å2
<r2> 121.947
(<r2>)1/2 11.043