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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: B3LYP/3-21G*

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/3-21G*
 hartrees
Energy at 0K-832.959609
Energy at 298.15K 
HF Energy-832.959609
Nuclear repulsion energy140.314733
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/3-21G*
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 236 227 8.18 15.89 0.63 0.77
2 A 296 284 18.08 10.60 0.65 0.79
3 A 618 594 2.87 16.06 0.19 0.31
4 A 929 894 4.91 12.81 0.57 0.72
5 A 1248 1201 1.62 26.11 0.70 0.82
6 A 1519 1461 5.04 21.40 0.74 0.85
7 A 2680 2579 3.63 108.41 0.17 0.28
8 A 3094 2976 7.84 87.40 0.11 0.20
9 B 257 247 47.16 2.45 0.75 0.86
10 B 704 677 35.88 6.44 0.75 0.86
11 B 741 712 0.49 5.30 0.75 0.86
12 B 1038 998 26.15 8.05 0.75 0.86
13 B 1300 1251 15.98 4.59 0.75 0.86
14 B 2680 2578 9.38 83.02 0.75 0.86
15 B 3147 3027 0.65 64.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10242.2 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 9853.0 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/3-21G*
ABC
0.87049 0.10338 0.09670

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.791
S2 0.000 1.560 -0.183
S3 0.000 -1.560 -0.183
H4 0.883 -0.052 1.431
H5 -0.883 0.052 1.431
H6 1.121 1.292 -0.882
H7 -1.121 -1.292 -0.882

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.83851.83851.09201.09202.39252.3925
S21.83853.11972.44602.37851.34823.1436
S31.83853.11972.37852.44603.14361.3482
H41.09202.44602.37851.76842.68613.3022
H51.09202.37852.44601.76843.30222.6861
H62.39251.34823.14362.68613.30223.4223
H72.39253.14361.34823.30222.68613.4223

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.094 C1 S3 H7 96.094
S2 C1 S3 116.086 S2 C1 H4 110.559
S2 C1 H5 105.669 S3 C1 H4 105.669
S3 C1 H5 110.559 H4 C1 H5 108.129
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.703      
2 S -0.045      
3 S -0.045      
4 H 0.256      
5 H 0.256      
6 H 0.141      
7 H 0.141      


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 0.411 0.411
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.822 1.965 0.000
y 1.965 -39.249 0.000
z 0.000 0.000 -32.425
Traceless
 xyz
x 4.015 1.965 0.000
y 1.965 -7.126 0.000
z 0.000 0.000 3.111
Polar
3z2-r26.222
x2-y27.427
xy1.965
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.981 0.040 0.000
y 0.040 7.562 0.000
z 0.000 0.000 5.019


<r2> (average value of r2) Å2
<r2> 117.296
(<r2>)1/2 10.830