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: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-875.771072
Energy at 298.15K-875.777202
HF Energy-875.602220
Nuclear repulsion energy220.292339
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3201 3039 4.92      
2 A 3185 3024 8.14      
3 A 3097 2939 17.47      
4 A 1527 1449 0.52      
5 A 1514 1437 6.48      
6 A 1410 1339 2.74      
7 A 1013 961 5.78      
8 A 1007 955 2.21      
9 A 713 677 0.16      
10 A 508 482 0.23      
11 A 233 222 1.52      
12 A 152 144 0.00      
13 A 100 95 1.44      
14 B 3201 3038 9.12      
15 B 3185 3023 4.63      
16 B 3095 2938 19.34      
17 B 1530 1453 18.47      
18 B 1508 1431 10.20      
19 B 1403 1332 6.31      
20 B 1013 961 18.89      
21 B 1003 952 3.08      
22 B 710 674 1.63      
23 B 262 249 1.37      
24 B 165 157 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 17366.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 16484.4 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 B2PLYP/6-31G*
ABC
0.27023 0.09063 0.08346

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.457 0.928 -0.498
S2 0.457 -0.928 -0.498
C3 0.457 1.832 0.801
C4 -0.457 -1.832 0.801
H5 0.053 2.847 0.809
H6 0.304 1.381 1.782
H7 1.521 1.869 0.568
H8 -0.053 -2.847 0.809
H9 -0.304 -1.381 1.782
H10 -1.521 -1.869 0.568

Atom - Atom Distances (Å)
  S1 S2 C3 C4 H5 H6 H7 H8 H9 H10
S12.06871.82663.04972.37672.44582.43584.01503.24863.1765
S22.06873.04971.82664.01503.24863.17652.37672.44582.4358
C31.82663.04973.77531.09291.09081.09004.70613.44444.2021
C43.04971.82663.77534.70613.44444.20211.09291.09081.0900
H52.37674.01501.09294.70611.77741.78085.69484.35334.9771
H62.44583.24861.09083.44441.77741.78694.35332.82853.9200
H72.43583.17651.09004.20211.78081.78694.97713.92004.8190
H84.01502.37674.70611.09295.69484.35334.97711.77741.7808
H93.24862.44583.44441.09084.35332.82853.92001.77741.7869
H103.17652.43584.20211.09004.97713.92004.81901.78081.7869

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 102.880 S1 C3 H5 106.258
S1 C3 H6 111.429 S1 C3 H7 110.715
S2 S1 C3 102.880 S2 C4 H8 106.258
S2 C4 H9 111.429 S2 C4 H10 110.715
H5 C3 H6 108.965 H5 C3 H7 109.332
H6 C3 H7 110.041 H8 C4 H9 108.965
H8 C4 H10 109.332 H9 C4 H10 110.041
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.024      
2 S 0.024      
3 C -0.609      
4 C -0.609      
5 H 0.194      
6 H 0.188      
7 H 0.203      
8 H 0.194      
9 H 0.188      
10 H 0.203      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.509 -0.254 0.000
y -0.254 10.856 0.000
z 0.000 0.000 6.923


<r2> (average value of r2) Å2
<r2> 157.302
(<r2>)1/2 12.542