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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: mPW1PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-836.962560
Energy at 298.15K 
HF Energy-836.962560
Nuclear repulsion energy142.314630
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 mPW1PW91/6-311+G(3df,2p)
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 212 212 4.67 4.47 0.43 0.60
2 A 293 293 8.18 1.01 0.16 0.27
3 A 649 649 2.23 12.48 0.14 0.24
4 A 910 910 3.88 7.96 0.08 0.15
5 A 1208 1208 0.40 4.00 0.67 0.80
6 A 1451 1451 2.22 9.40 0.63 0.77
7 A 2717 2717 0.01 131.83 0.07 0.13
8 A 3094 3094 4.89 99.23 0.07 0.13
9 B 241 241 33.50 0.10 0.75 0.86
10 B 708 708 1.43 0.62 0.75 0.86
11 B 773 773 25.57 4.57 0.75 0.86
12 B 1010 1010 16.92 1.04 0.75 0.86
13 B 1260 1260 22.13 0.07 0.75 0.86
14 B 2717 2717 0.01 52.83 0.75 0.86
15 B 3151 3151 1.95 56.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10197.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10197.0 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 mPW1PW91/6-311+G(3df,2p)
ABC
0.90295 0.10628 0.09959

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.769
S2 0.000 1.538 -0.178
S3 0.000 -1.538 -0.178
H4 0.877 -0.055 1.410
H5 -0.877 0.055 1.410
H6 1.116 1.290 -0.877
H7 -1.116 -1.290 -0.877

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.80591.80591.08741.08742.37052.3705
S21.80593.07552.41382.34251.34013.1189
S31.80593.07552.34252.41383.11891.3401
H41.08742.41382.34251.75752.66403.2751
H51.08742.34252.41381.75753.27512.6640
H62.37051.34013.11892.66403.27513.4103
H72.37053.11891.34013.27512.66403.4103

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.668 C1 S3 H7 96.668
S2 C1 S3 116.754 S2 C1 H4 110.612
S2 C1 H5 105.408 S3 C1 H4 105.408
S3 C1 H5 110.612 H4 C1 H5 107.818
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.033      
2 S -0.290      
3 S -0.290      
4 H 0.156      
5 H 0.156      
6 H 0.151      
7 H 0.151      


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 0.482 0.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.767 1.360 0.000
y 1.360 -38.679 0.000
z 0.000 0.000 -32.560
Traceless
 xyz
x 3.853 1.360 0.000
y 1.360 -6.516 0.000
z 0.000 0.000 2.663
Polar
3z2-r25.326
x2-y26.912
xy1.360
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.030 0.378 0.000
y 0.378 10.380 0.000
z 0.000 0.000 7.493


<r2> (average value of r2) Å2
<r2> 114.548
(<r2>)1/2 10.703