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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G*
 hartrees
Energy at 0K-832.595530
Energy at 298.15K 
HF Energy-832.595530
Nuclear repulsion energy141.514744
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 PBE1PBE/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 244 234 7.39 14.26 0.63 0.77
2 A 306 294 21.27 10.53 0.67 0.80
3 A 644 618 2.90 14.84 0.20 0.33
4 A 939 901 6.21 12.76 0.58 0.73
5 A 1257 1206 1.36 26.30 0.69 0.82
6 A 1516 1455 8.24 20.95 0.74 0.85
7 A 2722 2612 2.15 107.00 0.16 0.28
8 A 3104 2980 5.45 87.86 0.11 0.20
9 B 266 256 51.70 2.25 0.75 0.86
10 B 741 711 13.78 0.02 0.75 0.86
11 B 756 726 17.30 11.02 0.75 0.86
12 B 1044 1002 28.67 7.64 0.75 0.86
13 B 1307 1255 10.85 4.96 0.75 0.86
14 B 2721 2611 5.00 83.33 0.75 0.86
15 B 3161 3034 0.27 65.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10363.8 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 9947.2 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 PBE1PBE/3-21G*
ABC
0.87673 0.10571 0.09877

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.786
S2 0.000 1.543 -0.181
S3 0.000 -1.543 -0.181
H4 0.882 -0.052 1.431
H5 -0.882 0.052 1.431
H6 1.112 1.264 -0.886
H7 -1.112 -1.264 -0.886

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82101.82101.09391.09392.37272.3727
S21.82103.08552.43372.36631.34573.1002
S31.82103.08552.36632.43373.10021.3457
H41.09392.43372.36631.76692.67483.2883
H51.09392.36632.43371.76693.28832.6748
H62.37271.34573.10022.67483.28833.3674
H72.37273.10021.34573.28832.67483.3674

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.890 C1 S3 H7 95.890
S2 C1 S3 115.812 S2 C1 H4 110.728
S2 C1 H5 105.826 S3 C1 H4 105.826
S3 C1 H5 110.728 H4 C1 H5 107.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.792      
2 S -0.049      
3 S -0.049      
4 H 0.285      
5 H 0.285      
6 H 0.160      
7 H 0.160      


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 0.394 0.394
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.831 2.014 0.000
y 2.014 -39.488 0.000
z 0.000 0.000 -32.317
Traceless
 xyz
x 4.072 2.014 0.000
y 2.014 -7.414 0.000
z 0.000 0.000 3.343
Polar
3z2-r26.685
x2-y27.657
xy2.014
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.955 0.016 0.000
y 0.016 7.387 0.000
z 0.000 0.000 5.025


<r2> (average value of r2) Å2
<r2> 115.395
(<r2>)1/2 10.742