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All results from a given calculation for CH2SHCH2SH (1,2-Ethanedithiol)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-34.824871
Energy at 298.15K-34.831026
HF Energy-34.333183
Nuclear repulsion energy65.530131
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 MP2/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 Ag 3120 2962 0.00      
2 Ag 2753 2614 0.00      
3 Ag 1520 1443 0.00      
4 Ag 1377 1307 0.00      
5 Ag 1133 1075 0.00      
6 Ag 923 876 0.00      
7 Ag 765 726 0.00      
8 Ag 287 272 0.00      
9 Au 3210 3048 26.61      
10 Au 1153 1094 6.04      
11 Au 803 762 5.14      
12 Au 152 144 30.21      
13 Au 69 65 46.17      
14 Bg 3192 3031 0.00      
15 Bg 1324 1257 0.00      
16 Bg 996 945 0.00      
17 Bg 142 135 0.00      
18 Bu 3126 2968 39.47      
19 Bu 2754 2614 23.52      
20 Bu 1518 1441 5.59      
21 Bu 1274 1209 66.41      
22 Bu 911 865 4.49      
23 Bu 754 716 7.41      
24 Bu 204 194 8.99      

Unscaled Zero Point Vibrational Energy (zpe) 16728.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 15881.6 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 MP2/CEP-31G*
ABC
0.81798 0.05012 0.04811

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.771 0.000
C2 0.000 -0.771 0.000
S3 1.756 -1.335 0.000
S4 -1.756 1.335 0.000
H5 1.483 -2.661 0.000
H6 -1.483 2.661 0.000
H7 -0.512 -1.148 0.901
H8 -0.512 -1.148 -0.901
H9 0.512 1.148 0.901
H10 0.512 1.148 -0.901

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.54112.74171.84433.73832.40272.18042.18041.10251.1025
C21.54111.84432.74172.40273.73831.10251.10252.18042.1804
S32.74171.84434.41151.35365.14382.44712.44712.91972.9197
S41.84432.74174.41155.14381.35362.91972.91972.44712.4471
H53.73832.40271.35365.14386.09272.66082.66084.03274.0327
H62.40273.73835.14381.35366.09274.03274.03272.66082.6608
H72.18041.10252.44712.91972.66084.03271.80122.51403.0926
H82.18041.10252.44712.91972.66084.03271.80123.09262.5140
H91.10252.18042.91972.44714.03272.66082.51403.09261.8012
H101.10252.18042.91972.44714.03272.66083.09262.51401.8012

picture of 1,2-Ethanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 S3 107.827 C1 C2 H7 110.021
C1 C2 H8 110.021 C1 S4 H6 96.202
C2 C1 S4 107.827 C2 C1 H9 110.021
C2 C1 H10 110.021 C2 S3 H5 96.202
S3 C2 H7 109.706 S3 C2 H8 109.706
S4 C1 H9 109.706 S4 C1 H10 109.706
H7 C2 H8 109.538 H9 C1 H10 109.538
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability