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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-836.812261
Energy at 298.15K 
HF Energy-836.812261
Nuclear repulsion energy140.791390
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 B3PW91/cc-pVDZ
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 221 213 6.54 16.97 0.67 0.80
2 A 296 285 14.23 11.67 0.63 0.78
3 A 635 613 2.69 11.13 0.14 0.25
4 A 891 860 3.56 8.71 0.46 0.63
5 A 1185 1143 0.66 14.74 0.67 0.80
6 A 1422 1372 1.48 13.17 0.75 0.86
7 A 2684 2590 0.86 146.50 0.12 0.21
8 A 3085 2977 8.35 113.62 0.07 0.14
9 B 257 248 43.88 3.50 0.75 0.86
10 B 702 678 2.02 1.36 0.75 0.86
11 B 755 728 33.87 6.83 0.75 0.86
12 B 991 957 16.72 4.92 0.75 0.86
13 B 1237 1194 27.31 1.60 0.75 0.86
14 B 2684 2590 1.81 87.64 0.75 0.86
15 B 3152 3042 0.96 74.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10098.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9745.0 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 B3PW91/cc-pVDZ
ABC
0.88836 0.10385 0.09739

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.774
S2 0.000 1.556 -0.179
S3 0.000 -1.556 -0.179
H4 0.887 -0.059 1.422
H5 -0.887 0.059 1.422
H6 1.130 1.298 -0.884
H7 -1.130 -1.298 -0.884

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82441.82441.09961.09962.38922.3892
S21.82443.11152.44022.36411.35653.1487
S31.82443.11152.36412.44023.14871.3565
H41.09962.44022.36411.77742.68573.3039
H51.09962.36412.44021.77743.30392.6857
H62.38921.35653.14872.68573.30393.4410
H72.38923.14871.35653.30392.68573.4410

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.261 C1 S3 H7 96.261
S2 C1 S3 117.019 S2 C1 H4 110.679
S2 C1 H5 105.194 S3 C1 H4 105.194
S3 C1 H5 110.679 H4 C1 H5 107.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.259      
2 S -0.090      
3 S -0.090      
4 H 0.117      
5 H 0.117      
6 H 0.102      
7 H 0.102      


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 0.354 0.354
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.250 1.763 0.000
y 1.763 -38.202 0.000
z 0.000 0.000 -32.027
Traceless
 xyz
x 3.865 1.763 0.000
y 1.763 -6.564 0.000
z 0.000 0.000 2.699
Polar
3z2-r25.399
x2-y26.953
xy1.763
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.364 0.104 0.000
y 0.104 8.194 0.000
z 0.000 0.000 5.460


<r2> (average value of r2) Å2
<r2> 116.301
(<r2>)1/2 10.784