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: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-874.797512
Energy at 298.15K-874.803744
HF Energy-874.254008
Nuclear repulsion energy203.157716
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 MP2/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3156 2955 0.00      
2 Ag 2830 2650 0.00      
3 Ag 1552 1454 0.00      
4 Ag 1401 1312 0.00      
5 Ag 1145 1073 0.00      
6 Ag 942 883 0.00      
7 Ag 780 730 0.00      
8 Ag 293 274 0.00      
9 Au 3237 3031 10.03      
10 Au 1179 1104 4.87      
11 Au 808 757 2.49      
12 Au 145 135 18.26      
13 Au 79 74 38.61      
14 Bg 3218 3014 0.00      
15 Bg 1346 1261 0.00      
16 Bg 1024 959 0.00      
17 Bg 145 135 0.00      
18 Bu 3163 2963 23.74      
19 Bu 2830 2650 18.86      
20 Bu 1554 1455 5.52      
21 Bu 1301 1218 59.79      
22 Bu 932 873 6.84      
23 Bu 766 718 4.13      
24 Bu 207 194 8.05      

Unscaled Zero Point Vibrational Energy (zpe) 17016.5 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 15935.9 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 MP2/6-31G**
ABC
0.84546 0.05105 0.04903

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.760 0.000
C2 0.000 -0.760 0.000
S3 1.730 -1.336 0.000
S4 -1.730 1.336 0.000
H5 1.446 -2.637 0.000
H6 -1.446 2.637 0.000
H7 -0.514 -1.130 0.885
H8 -0.514 -1.130 -0.885
H9 0.514 1.130 0.885
H10 0.514 1.130 -0.885

Atom - Atom Distances (Å)
  C1 C2 S3 S4 H5 H6 H7 H8 H9 H10
C11.52002.71791.82333.69242.36982.14922.14921.08851.0885
C21.52001.82332.71792.36983.69241.08851.08852.14922.1492
S32.71791.82334.37181.33155.08702.42132.42132.88832.8883
S41.82332.71794.37185.08701.33152.88832.88832.42132.4213
H53.69242.36981.33155.08706.01572.62702.62703.98023.9802
H62.36983.69245.08701.33156.01573.98023.98022.62702.6270
H72.14921.08852.42132.88832.62703.98021.77062.48243.0492
H82.14921.08852.42132.88832.62703.98021.77063.04922.4824
H91.08852.14922.88832.42133.98022.62702.48243.04921.7706
H101.08852.14922.88832.42133.98022.62703.04922.48241.7706

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 108.428 C1 C2 H7 109.849
C1 C2 H8 109.849 C1 S4 H6 96.132
C2 C1 S4 108.428 C2 C1 H9 109.849
C2 C1 H10 109.849 C2 S3 H5 96.132
S3 C2 H7 109.936 S3 C2 H8 109.936
S4 C1 H9 109.936 S4 C1 H10 109.936
H7 C2 H8 108.835 H9 C1 H10 108.835
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability