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

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-870.244031
Energy at 298.15K-870.250042
HF Energy-869.896454
Nuclear repulsion energy195.838271
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 QCISD/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 Ag 3091 2996 0.00      
2 Ag 2370 2297 0.00      
3 Ag 1552 1505 0.00      
4 Ag 1360 1318 0.00      
5 Ag 1073 1040 0.00      
6 Ag 850 824 0.00      
7 Ag 685 664 0.00      
8 Ag 269 260 0.00      
9 Au 3167 3070 8.63      
10 Au 1159 1124 1.53      
11 Au 793 768 4.55      
12 Au 129 125 36.26      
13 Au 90 87 34.53      
14 Bg 3145 3048 0.00      
15 Bg 1355 1314 0.00      
16 Bg 960 931 0.00      
17 Bg 138 134 0.00      
18 Bu 3099 3004 12.52      
19 Bu 2371 2298 75.42      
20 Bu 1554 1506 9.22      
21 Bu 1282 1243 53.11      
22 Bu 854 828 10.03      
23 Bu 648 628 11.01      
24 Bu 195 189 9.89      

Unscaled Zero Point Vibrational Energy (zpe) 16094.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 15599.2 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 QCISD/3-21G
ABC
0.80344 0.04715 0.04531

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.767 0.000
C2 0.000 -0.767 0.000
S3 1.842 -1.341 0.000
S4 -1.842 1.341 0.000
H5 1.574 -2.697 0.000
H6 -1.574 2.697 0.000
H7 -0.484 -1.159 0.899
H8 -0.484 -1.159 -0.899
H9 0.484 1.159 0.899
H10 0.484 1.159 -0.899

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.53462.79931.92923.80522.49042.17992.17991.09381.0938
C21.53461.92922.79932.49043.80521.09381.09382.17992.1799
S32.79931.92924.55641.38275.28892.50072.50072.98292.9829
S41.92922.79934.55645.28891.38272.98292.98292.50072.5007
H53.80522.49041.38275.28896.24572.72262.72264.10644.1064
H62.49043.80525.28891.38276.24574.10644.10642.72262.7226
H72.17991.09382.50072.98292.72264.10641.79872.51133.0890
H82.17991.09382.50072.98292.72264.10641.79873.08902.5113
H91.09382.17992.98292.50074.10642.72262.51133.08901.7987
H101.09382.17992.98292.50074.10642.72263.08902.51131.7987

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 107.287 C1 C2 H7 110.960
C1 C2 H8 110.960 C1 S4 H6 96.114
C2 C1 S4 107.287 C2 C1 H9 110.960
C2 C1 H10 110.960 C2 S3 H5 96.114
S3 C2 H7 108.446 S3 C2 H8 108.446
S4 C1 H9 108.446 S4 C1 H10 108.446
H7 C2 H8 110.616 H9 C1 H10 110.616
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability