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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-832.658549
Energy at 298.15K 
HF Energy-832.658549
Nuclear repulsion energy135.148235
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 BLYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 220 219 9.36 27.56 0.61 0.76
2 A 265 264 26.84 18.51 0.69 0.82
3 A 555 552 5.36 19.26 0.18 0.30
4 A 845 841 4.32 19.99 0.58 0.74
5 A 1172 1166 1.96 26.49 0.72 0.84
6 A 1460 1452 2.09 20.16 0.75 0.86
7 A 2373 2359 9.55 131.70 0.20 0.33
8 A 3063 3046 6.50 88.46 0.10 0.19
9 B 238 236 55.35 8.11 0.75 0.86
10 B 616 613 72.93 8.58 0.75 0.86
11 B 693 689 0.01 4.80 0.75 0.86
12 B 963 958 23.32 12.85 0.75 0.86
13 B 1225 1219 30.07 3.50 0.75 0.86
14 B 2372 2359 42.02 88.25 0.75 0.86
15 B 3137 3120 0.40 60.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9598.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 9546.1 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 BLYP/3-21G
ABC
0.80753 0.09538 0.08935

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.832
S2 0.000 1.623 -0.194
S3 0.000 -1.623 -0.194
H4 0.899 -0.054 1.454
H5 -0.899 0.054 1.454
H6 1.201 1.373 -0.844
H7 -1.201 -1.373 -0.844

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.92021.92021.09451.09452.47742.4774
S21.92023.24572.51772.44651.38773.2927
S31.92023.24572.44652.51773.29271.3877
H41.09452.51772.44651.80122.72243.3808
H51.09452.44652.51771.80123.38082.7224
H62.47741.38773.29272.72243.38083.6485
H72.47743.29271.38773.38082.72243.6485

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.648 C1 S3 H7 95.648
S2 C1 S3 115.374 S2 C1 H4 110.230
S2 C1 H5 105.174 S3 C1 H4 105.174
S3 C1 H5 110.230 H4 C1 H5 110.739
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.778      
2 S 0.038      
3 S 0.038      
4 H 0.259      
5 H 0.259      
6 H 0.091      
7 H 0.091      


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 0.511 0.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.853 2.792 0.000
y 2.792 -40.525 0.000
z 0.000 0.000 -33.102
Traceless
 xyz
x 4.961 2.792 0.000
y 2.792 -8.048 0.000
z 0.000 0.000 3.087
Polar
3z2-r26.173
x2-y28.672
xy2.792
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.169 0.036 0.000
y 0.036 8.362 0.000
z 0.000 0.000 4.800


<r2> (average value of r2) Å2
<r2> 125.532
(<r2>)1/2 11.204