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 CH2SHCH2SH (1,2-Ethanedithiol)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-874.891939
Energy at 298.15K-874.898085
HF Energy-874.315318
Nuclear repulsion energy203.132153
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 MP2/6-311G**
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 3105 2950 0.00      
2 Ag 2799 2660 0.00      
3 Ag 1510 1434 0.00      
4 Ag 1377 1309 0.00      
5 Ag 1133 1077 0.00      
6 Ag 933 887 0.00      
7 Ag 777 738 0.00      
8 Ag 293 279 0.00      
9 Au 3183 3025 8.45      
10 Au 1168 1109 11.45      
11 Au 810 770 5.16      
12 Au 134 128 10.48      
13 Au 62 59 45.19      
14 Bg 3163 3005 0.00      
15 Bg 1324 1258 0.00      
16 Bg 1012 961 0.00      
17 Bg 118 112 0.00      
18 Bu 3113 2958 25.33      
19 Bu 2799 2660 7.60      
20 Bu 1510 1435 4.42      
21 Bu 1288 1223 72.92      
22 Bu 924 878 5.33      
23 Bu 763 725 3.73      
24 Bu 208 197 6.77      

Unscaled Zero Point Vibrational Energy (zpe) 16752.8 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 15918.5 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 MP2/6-311G**
ABC
0.84048 0.05114 0.04911

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.485 0.587 0.000
C2 -0.485 -0.587 0.000
S3 0.485 -2.129 0.000
S4 -0.485 2.129 0.000
H5 -0.565 -2.955 0.000
H6 0.565 2.955 0.000
H7 -1.116 -0.544 0.890
H8 -1.116 -0.544 -0.890
H9 1.116 0.544 0.890
H10 1.116 0.544 -0.890

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.52292.71591.82213.69412.36942.15302.15301.09211.0921
C21.52291.82212.71592.36943.69411.09211.09212.15302.1530
S32.71591.82214.36731.33575.08462.42312.42312.88682.8868
S41.82212.71594.36735.08461.33572.88682.88682.42312.4231
H53.69412.36941.33575.08466.01672.62902.62903.98213.9821
H62.36943.69415.08461.33576.01673.98213.98212.62902.6290
H72.15301.09212.42312.88682.62903.98211.78052.48333.0556
H82.15301.09212.42312.88682.62903.98211.78053.05562.4833
H91.09212.15302.88682.42313.98212.62902.48333.05561.7805
H101.09212.15302.88682.42313.98212.62903.05562.48331.7805

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 108.237 C1 C2 H7 109.737
C1 C2 H8 109.737 C1 S4 H6 96.011
C2 C1 S4 108.237 C2 C1 H9 109.737
C2 C1 H10 109.737 C2 S3 H5 96.011
S3 C2 H7 109.958 S3 C2 H8 109.958
S4 C1 H9 109.958 S4 C1 H10 109.958
H7 C2 H8 109.201 H9 C1 H10 109.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability