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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: HF/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 HF/CEP-31G
 hartrees
Energy at 0K-27.587683
Energy at 298.15K 
HF Energy-27.587683
Nuclear repulsion energy38.155179
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-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 256 231 14.47 33.80 0.68 0.81
2 A 299 270 38.96 23.66 0.69 0.82
3 A 654 590 10.34 46.79 0.13 0.22
4 A 940 848 4.18 18.93 0.68 0.81
5 A 1308 1179 1.08 30.34 0.75 0.86
6 A 1582 1426 0.78 23.96 0.69 0.82
7 A 2714 2447 12.60 220.11 0.18 0.31
8 A 3312 2986 31.29 133.14 0.08 0.15
9 B 243 219 62.50 11.24 0.75 0.86
10 B 774 698 1.32 4.13 0.75 0.86
11 B 787 709 52.51 31.27 0.75 0.86
12 B 1088 981 46.38 6.93 0.75 0.86
13 B 1392 1255 39.53 0.14 0.75 0.86
14 B 2716 2448 52.04 164.21 0.75 0.86
15 B 3403 3068 5.75 79.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10734.5 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 9676.1 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-31G
ABC
0.85130 0.09919 0.09297

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.804
S2 0.000 1.590 -0.186
S3 0.000 -1.590 -0.186
H4 0.881 -0.050 1.429
H5 -0.881 0.050 1.429
H6 1.159 1.399 -0.871
H7 -1.159 -1.399 -0.871

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.87321.87321.08141.08142.47112.4711
S21.87323.18072.46462.39881.36013.2784
S31.87323.18072.39882.46463.27841.3601
H41.08142.46462.39881.76562.73243.3571
H51.08142.39882.46461.76563.35712.7324
H62.47111.36013.27842.73243.35713.6331
H72.47113.27841.36013.35712.73243.6331

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 98.438 C1 S3 H7 98.438
S2 C1 S3 116.207 S2 C1 H4 110.161
S2 C1 H5 105.406 S3 C1 H4 105.406
S3 C1 H5 110.161 H4 C1 H5 109.447
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.539      
2 S 0.040      
3 S 0.040      
4 H 0.198      
5 H 0.198      
6 H 0.031      
7 H 0.031      


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 0.469 0.469
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.537 3.426 0.000
y 3.426 -40.849 0.000
z 0.000 0.000 -31.537
Traceless
 xyz
x 5.656 3.426 0.000
y 3.426 -9.812 0.000
z 0.000 0.000 4.156
Polar
3z2-r28.313
x2-y210.312
xy3.426
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.634 -0.016 0.000
y -0.016 7.965 0.000
z 0.000 0.000 4.676


<r2> (average value of r2) Å2
<r2> 68.536
(<r2>)1/2 8.279