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All results from a given calculation for CH3SSCH3 (Disulfide, dimethyl)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-870.607065
Energy at 298.15K-870.613273
HF Energy-870.125429
Nuclear repulsion energy221.107453
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 CCD/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 3145 3008 4.45      
2 A 3127 2991 7.52      
3 A 3052 2919 15.98      
4 A 1561 1493 0.37      
5 A 1551 1484 8.32      
6 A 1446 1383 0.29      
7 A 1038 993 4.99      
8 A 1033 988 3.24      
9 A 698 667 0.17      
10 A 515 493 0.18      
11 A 243 232 1.26      
12 A 154 147 0.02      
13 A 105 101 1.29      
14 B 3144 3008 10.09      
15 B 3126 2990 5.58      
16 B 3050 2918 14.64      
17 B 1565 1497 17.55      
18 B 1545 1478 11.67      
19 B 1439 1376 1.38      
20 B 1041 996 18.62      
21 B 1030 985 3.41      
22 B 693 663 0.80      
23 B 278 266 1.07      
24 B 166 158 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 17372.2 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 16616.5 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 CCD/3-21G*
ABC
0.26221 0.09347 0.08512

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 1.026 -0.510
S2 0.000 -1.026 -0.510
C3 1.208 1.399 0.820
C4 -1.208 -1.399 0.820
H5 1.302 2.492 0.869
H6 0.852 1.025 1.787
H7 2.182 0.958 0.584
H8 -1.302 -2.492 0.869
H9 -0.852 -1.025 1.787
H10 -2.182 -0.958 0.584

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.05271.83543.01882.39672.44962.44153.99703.19543.1455
S22.05273.01881.83543.99703.19543.14552.39672.44962.4415
C31.83543.01883.69751.09811.09581.09474.63103.32534.1358
C43.01881.83543.69754.63103.32534.13581.09811.09581.0947
H52.39673.99701.09814.63101.78791.79165.62344.22554.9112
H62.44963.19541.09583.32531.78791.79454.22552.66633.8190
H72.44153.14551.09474.13581.79161.79454.91123.81904.7656
H83.99702.39674.63101.09815.62344.22554.91121.78791.7916
H93.19542.44963.32531.09584.22552.66633.81901.78791.7945
H103.14552.44154.13581.09474.91123.81904.76561.79161.7945

picture of Disulfide, dimethyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 S2 C4 101.723 S1 C3 H5 106.867
S1 C3 H6 110.842 S1 C3 H7 110.296
S2 S1 C3 101.723 S2 C4 H8 106.867
S2 C4 H9 110.842 S2 C4 H10 110.296
H5 C3 H6 109.165 H5 C3 H7 109.586
H6 C3 H7 110.020 H8 C4 H9 109.165
H8 C4 H10 109.586 H9 C4 H10 110.020
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability