return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: LSDA/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-873.676574
Energy at 298.15K-873.682541
Nuclear repulsion energy221.996300
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 LSDA/6-31+G**
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 3097 3050 0.67      
2 A 3082 3036 5.02      
3 A 2984 2939 15.67      
4 A 1402 1381 0.46      
5 A 1391 1371 12.64      
6 A 1295 1276 0.25      
7 A 938 924 5.04      
8 A 931 917 2.24      
9 A 704 693 0.14      
10 A 508 500 0.57      
11 A 225 222 1.91      
12 A 134 132 0.11      
13 A 85 84 1.11      
14 B 3097 3050 2.70      
15 B 3084 3038 0.50      
16 B 2983 2938 14.17      
17 B 1408 1387 31.19      
18 B 1384 1364 20.13      
19 B 1289 1269 0.35      
20 B 939 924 18.05      
21 B 927 913 4.11      
22 B 704 693 7.54      
23 B 253 249 1.66      
24 B 161 159 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 16502.1 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 16254.6 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 LSDA/6-31+G**
ABC
0.27114 0.09332 0.08511

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.446 0.923 -0.502
S2 0.446 -0.923 -0.502
C3 0.446 1.795 0.805
C4 -0.446 -1.795 0.805
H5 0.049 2.824 0.823
H6 0.275 1.337 1.792
H7 1.525 1.831 0.588
H8 -0.049 -2.824 0.823
H9 -0.275 -1.337 1.792
H10 -1.525 -1.831 0.588

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.05131.80733.01632.36952.44032.42903.99473.22513.1524
S22.05133.01631.80733.99473.22513.15242.36952.44032.4290
C31.80733.01633.69911.10341.10171.10094.64553.36154.1326
C43.01631.80733.69914.64553.36154.13261.10341.10171.1009
H52.36953.99471.10344.64551.78971.79465.64904.28434.9194
H62.44033.22511.10173.36151.78971.80494.28432.72893.8366
H72.42903.15241.10094.13261.79461.80494.91943.83664.7655
H83.99472.36954.64551.10345.64904.28434.91941.78971.7946
H93.22512.44033.36151.10174.28432.72893.83661.78971.8049
H103.15242.42904.13261.10094.91943.83664.76551.79461.8049

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 102.654 S1 C3 H5 106.473
S1 C3 H6 111.740 S1 C3 H7 110.934
S2 S1 C3 102.654 S2 C4 H8 106.473
S2 C4 H9 111.740 S2 C4 H10 110.934
H5 C3 H6 108.511 H5 C3 H7 109.005
H6 C3 H7 110.052 H8 C4 H9 108.511
H8 C4 H10 109.005 H9 C4 H10 110.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.065      
2 S 0.065      
3 C -0.739      
4 C -0.739      
5 H 0.221      
6 H 0.218      
7 H 0.235      
8 H 0.221      
9 H 0.218      
10 H 0.235      


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 2.271 2.271
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.011 1.787 0.000
y 1.787 -35.588 0.000
z 0.000 0.000 -41.408
Traceless
 xyz
x -3.513 1.787 0.000
y 1.787 6.121 0.000
z 0.000 0.000 -2.608
Polar
3z2-r2-5.216
x2-y2-6.423
xy1.787
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.219 -0.056 0.000
y -0.056 12.431 0.000
z 0.000 0.000 8.612


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000