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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: B3LYP/CEP-121G*

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-121G*
 hartrees
Energy at 0K-28.342365
Energy at 298.15K 
HF Energy-28.342365
Nuclear repulsion energy38.499894
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-121G*
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 224 218 5.03 10.45 0.55 0.71
2 A 289 280 15.43 6.73 0.58 0.73
3 A 623 604 3.36 15.78 0.16 0.27
4 A 894 866 3.67 7.47 0.30 0.47
5 A 1206 1169 1.30 17.44 0.67 0.80
6 A 1463 1418 1.66 13.65 0.74 0.85
7 A 2633 2553 2.95 140.76 0.14 0.25
8 A 3069 2975 15.84 107.63 0.10 0.18
9 B 255 247 42.20 0.79 0.75 0.86
10 B 706 684 2.86 1.10 0.75 0.86
11 B 730 708 39.36 10.63 0.75 0.86
12 B 1005 975 26.54 5.93 0.75 0.86
13 B 1271 1232 36.91 2.22 0.75 0.86
14 B 2633 2553 10.29 94.35 0.75 0.86
15 B 3130 3034 4.87 74.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10065.8 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 9757.7 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-121G*
ABC
0.87713 0.10125 0.09501

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.783
S2 0.000 1.576 -0.181
S3 0.000 -1.576 -0.181
H4 0.883 -0.056 1.425
H5 -0.883 0.056 1.425
H6 1.142 1.326 -0.874
H7 -1.142 -1.326 -0.874

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.84711.84711.09361.09362.41002.4100
S21.84713.15132.45442.38091.35943.1942
S31.84713.15132.38092.45443.19421.3594
H41.09362.45442.38091.77012.69533.3169
H51.09362.38092.45441.77013.31692.6953
H62.41001.35943.19422.69533.31693.5001
H72.41003.19421.35943.31692.69533.5001

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.269 C1 S3 H7 96.269
S2 C1 S3 117.087 S2 C1 H4 110.519
S2 C1 H5 105.224 S3 C1 H4 105.224
S3 C1 H5 110.519 H4 C1 H5 108.050
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.477      
2 S -0.097      
3 S -0.097      
4 H 0.218      
5 H 0.218      
6 H 0.118      
7 H 0.118      


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 0.464 0.464
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.188 1.804 0.000
y 1.804 -37.619 0.000
z 0.000 0.000 -31.275
Traceless
 xyz
x 4.259 1.804 0.000
y 1.804 -6.887 0.000
z 0.000 0.000 2.628
Polar
3z2-r25.257
x2-y27.431
xy1.804
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.926 0.280 0.000
y 0.280 9.230 0.000
z 0.000 0.000 6.162


<r2> (average value of r2) Å2
<r2> 66.547
(<r2>)1/2 8.158