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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: HF/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 HF/CEP-121G*
 hartrees
Energy at 0K-27.683735
Energy at 298.15K 
HF Energy-27.683735
Nuclear repulsion energy38.999602
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 HF/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 252 228 6.33 8.20 0.57 0.73
2 A 312 282 19.27 5.46 0.57 0.73
3 A 696 628 5.70 23.21 0.15 0.26
4 A 979 885 4.07 6.34 0.44 0.61
5 A 1321 1194 0.91 15.86 0.70 0.83
6 A 1593 1439 0.57 12.55 0.73 0.85
7 A 2861 2585 2.01 145.11 0.16 0.27
8 A 3260 2945 20.80 99.52 0.12 0.21
9 B 264 239 43.07 0.51 0.75 0.86
10 B 772 697 0.65 2.11 0.75 0.86
11 B 844 763 27.92 15.70 0.75 0.86
12 B 1108 1001 33.09 4.62 0.75 0.86
13 B 1403 1267 39.21 0.20 0.75 0.86
14 B 2861 2584 5.67 104.80 0.75 0.86
15 B 3325 3004 5.50 70.96 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10925.5 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 9870.1 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 HF/CEP-121G*
ABC
0.88822 0.10459 0.09791

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.781
S2 0.000 1.550 -0.180
S3 0.000 -1.550 -0.180
H4 0.874 -0.049 1.416
H5 -0.874 0.049 1.416
H6 1.114 1.319 -0.881
H7 -1.114 -1.319 -0.881

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82381.82381.08141.08142.39692.3969
S21.82383.09992.42262.35901.33683.1565
S31.82383.09992.35902.42263.15651.3368
H41.08142.42262.35901.75042.68493.2931
H51.08142.35902.42261.75043.29312.6849
H62.39691.33683.15652.68493.29313.4530
H72.39693.15651.33683.29312.68493.4530

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 97.445 C1 S3 H7 97.445
S2 C1 S3 116.389 S2 C1 H4 110.372
S2 C1 H5 105.723 S3 C1 H4 105.723
S3 C1 H5 110.372 H4 C1 H5 108.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.403      
2 S -0.140      
3 S -0.140      
4 H 0.211      
5 H 0.211      
6 H 0.131      
7 H 0.131      


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 0.459 0.459
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.351 2.071 0.000
y 2.071 -38.406 0.000
z 0.000 0.000 -31.180
Traceless
 xyz
x 4.442 2.071 0.000
y 2.071 -7.640 0.000
z 0.000 0.000 3.198
Polar
3z2-r26.396
x2-y28.055
xy2.071
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.612 0.265 0.000
y 0.265 8.242 0.000
z 0.000 0.000 5.887


<r2> (average value of r2) Å2
<r2> 65.525
(<r2>)1/2 8.095