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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: mPW1PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/TZVP
 hartrees
Energy at 0K-836.942685
Energy at 298.15K 
HF Energy-836.942685
Nuclear repulsion energy141.223478
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 mPW1PW91/TZVP
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 221 211 7.85 12.90 0.64 0.78
2 A 296 283 15.55 8.93 0.59 0.74
3 A 646 616 3.55 10.46 0.16 0.28
4 A 903 862 4.71 6.09 0.31 0.47
5 A 1213 1157 0.87 14.23 0.58 0.74
6 A 1452 1385 1.92 16.94 0.72 0.84
7 A 2706 2581 0.45 143.55 0.12 0.21
8 A 3112 2969 7.88 109.36 0.07 0.14
9 B 254 242 47.39 2.45 0.75 0.86
10 B 713 681 1.71 0.87 0.75 0.86
11 B 764 729 34.16 9.60 0.75 0.86
12 B 1010 963 22.31 4.52 0.75 0.86
13 B 1275 1217 26.67 1.78 0.75 0.86
14 B 2705 2581 2.17 86.90 0.75 0.86
15 B 3173 3027 0.88 65.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10221.3 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 9751.1 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 mPW1PW91/TZVP
ABC
0.89787 0.10419 0.09779

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.771
S2 0.000 1.553 -0.179
S3 0.000 -1.553 -0.179
H4 0.878 -0.054 1.411
H5 -0.878 0.054 1.411
H6 1.134 1.309 -0.864
H7 -1.134 -1.309 -0.864

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.82031.82031.08761.08762.38212.3821
S21.82033.10572.42522.35451.34743.1540
S31.82033.10572.35452.42523.15401.3474
H41.08762.42522.35451.75872.66503.2862
H51.08762.35452.42521.75873.28622.6650
H62.38211.34743.15402.66503.28623.4646
H72.38213.15401.34743.28622.66503.4646

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.385 C1 S3 H7 96.385
S2 C1 S3 117.089 S2 C1 H4 110.473
S2 C1 H5 105.333 S3 C1 H4 105.333
S3 C1 H5 110.473 H4 C1 H5 107.900
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.339      
2 S -0.103      
3 S -0.103      
4 H 0.172      
5 H 0.172      
6 H 0.100      
7 H 0.100      


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 0.416 0.416
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.441 1.927 0.000
y 1.927 -39.018 0.000
z 0.000 0.000 -32.472
Traceless
 xyz
x 4.303 1.927 0.000
y 1.927 -7.061 0.000
z 0.000 0.000 2.758
Polar
3z2-r25.516
x2-y27.576
xy1.927
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.662 0.122 0.000
y 0.122 8.735 0.000
z 0.000 0.000 5.849


<r2> (average value of r2) Å2
<r2> 116.205
(<r2>)1/2 10.780