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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-28.336696
Energy at 298.15K 
HF Energy-28.336696
Nuclear repulsion energy38.434312
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 B3LYP/CEP-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 230 222 5.58 18.33 0.61 0.76
2 A 293 283 21.86 14.57 0.71 0.83
3 A 625 603 4.34 20.99 0.14 0.24
4 A 893 862 4.07 10.38 0.43 0.61
5 A 1197 1156 1.53 21.23 0.73 0.84
6 A 1451 1401 1.94 16.28 0.72 0.84
7 A 2662 2571 5.42 140.36 0.16 0.28
8 A 3097 2990 20.13 107.05 0.10 0.18
9 B 255 246 46.76 5.44 0.75 0.86
10 B 707 683 3.93 0.45 0.75 0.86
11 B 729 704 43.29 12.25 0.75 0.86
12 B 1004 970 30.76 6.48 0.75 0.86
13 B 1261 1218 33.46 1.41 0.75 0.86
14 B 2662 2571 20.01 101.93 0.75 0.86
15 B 3160 3052 6.68 67.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10112.9 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 9766.0 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 B3LYP/CEP-31G*
ABC
0.86785 0.10133 0.09500

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.788
S2 0.000 1.575 -0.182
S3 0.000 -1.575 -0.182
H4 0.889 -0.057 1.432
H5 -0.889 0.057 1.432
H6 1.142 1.321 -0.878
H7 -1.142 -1.321 -0.878

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.84991.84991.09961.09962.41382.4138
S21.84993.14992.46212.38791.36133.1901
S31.84993.14992.38792.46213.19011.3613
H41.09962.46212.38791.78222.70233.3262
H51.09962.38792.46211.78223.32622.7023
H62.41381.36133.19012.70233.32623.4930
H72.41383.19011.36133.32622.70233.4930

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.285 C1 S3 H7 96.285
S2 C1 S3 116.716 S2 C1 H4 110.587
S2 C1 H5 105.257 S3 C1 H4 105.257
S3 C1 H5 110.587 H4 C1 H5 108.261
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.388      
2 S -0.142      
3 S -0.142      
4 H 0.207      
5 H 0.207      
6 H 0.129      
7 H 0.129      


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 0.378 0.378
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.844 1.988 0.000
y 1.988 -37.928 0.000
z 0.000 0.000 -30.925
Traceless
 xyz
x 4.582 1.988 0.000
y 1.988 -7.543 0.000
z 0.000 0.000 2.961
Polar
3z2-r25.921
x2-y28.083
xy1.988
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.862 -0.099 0.000
y -0.099 8.454 0.000
z 0.000 0.000 5.184


<r2> (average value of r2) Å2
<r2> 66.531
(<r2>)1/2 8.157