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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-836.884630
Energy at 298.15K 
HF Energy-836.884630
Nuclear repulsion energy141.415871
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 mPW1PW91/6-31G**
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 232 220 7.07 10.78 0.61 0.76
2 A 303 288 19.79 7.11 0.63 0.77
3 A 650 618 3.71 14.14 0.20 0.34
4 A 915 871 4.83 10.50 0.50 0.67
5 A 1226 1167 1.18 21.47 0.67 0.80
6 A 1468 1397 3.12 16.71 0.74 0.85
7 A 2736 2604 2.24 122.56 0.15 0.27
8 A 3123 2971 6.92 95.70 0.10 0.19
9 B 256 243 47.44 1.05 0.75 0.86
10 B 720 686 1.79 1.86 0.75 0.86
11 B 772 735 32.13 9.15 0.75 0.86
12 B 1022 973 29.68 7.28 0.75 0.86
13 B 1285 1223 24.54 3.54 0.75 0.86
14 B 2736 2603 6.30 94.42 0.75 0.86
15 B 3187 3033 0.66 67.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10315.5 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 9815.2 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 mPW1PW91/6-31G**
ABC
0.89647 0.10466 0.09811

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.772
S2 0.000 1.550 -0.179
S3 0.000 -1.550 -0.179
H4 0.878 -0.056 1.416
H5 -0.878 0.056 1.416
H6 1.120 1.299 -0.876
H7 -1.120 -1.299 -0.876

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81821.81821.09051.09052.37882.3788
S21.81823.09962.42752.35531.34333.1393
S31.81823.09962.35532.42753.13931.3433
H41.09052.42752.35531.75982.67383.2855
H51.09052.35532.42751.75983.28552.6738
H62.37881.34333.13932.67383.28553.4300
H72.37883.13931.34333.28552.67383.4300

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.443 C1 S3 H7 96.443
S2 C1 S3 116.939 S2 C1 H4 110.639
S2 C1 H5 105.388 S3 C1 H4 105.388
S3 C1 H5 110.639 H4 C1 H5 107.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.558      
2 S -0.023      
3 S -0.023      
4 H 0.208      
5 H 0.208      
6 H 0.094      
7 H 0.094      


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 0.430 0.430
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.428 2.057 0.000
y 2.057 -39.072 0.000
z 0.000 0.000 -32.156
Traceless
 xyz
x 4.186 2.057 0.000
y 2.057 -7.280 0.000
z 0.000 0.000 3.094
Polar
3z2-r26.189
x2-y27.644
xy2.057
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.290 0.139 0.000
y 0.139 7.925 0.000
z 0.000 0.000 5.427


<r2> (average value of r2) Å2
<r2> 115.810
(<r2>)1/2 10.761