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All results from a given calculation for C5H6S (Thiophene, 2-methyl-)

using model chemistry: B3LYP/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-41.980691
Energy at 298.15K-41.986702
Nuclear repulsion energy106.759823
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 B3LYP/CEP-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 3243 3132 2.42      
2 A 3204 3094 6.96      
3 A 3187 3077 6.88      
4 A 3123 3016 21.75      
5 A 3043 2938 42.18      
6 A 1591 1537 2.04      
7 A 1504 1453 5.60      
8 A 1490 1439 11.01      
9 A 1415 1367 0.68      
10 A 1372 1325 0.97      
11 A 1239 1197 13.44      
12 A 1170 1130 10.89      
13 A 1085 1048 2.75      
14 A 1053 1017 5.30      
15 A 982 949 1.45      
16 A 840 811 14.24      
17 A 732 707 0.18      
18 A 658 636 1.99      
19 A 535 516 0.95      
20 A 290 280 0.83      
21 A 3100 2993 29.35      
22 A 1480 1429 9.78      
23 A 1047 1011 1.94      
24 A 917 886 0.47      
25 A 844 815 28.05      
26 A 709 685 104.45      
27 A 551 532 0.22      
28 A 450 435 7.74      
29 A 224 217 3.91      
30 A 94 91 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 20585.5 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 19879.4 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 B3LYP/CEP-31G*
ABC
0.17083 0.10050 0.06404

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.705 -2.230 0.000
C2 -0.918 -1.472 0.000
H3 -2.163 0.403 0.000
C4 -1.166 -0.044 0.000
C5 0.000 0.721 0.000
H6 0.913 -2.759 0.000
C7 0.438 -1.779 0.000
S8 1.417 -0.326 0.000
H9 -0.866 2.695 0.000
H10 0.678 2.598 0.892
H11 0.678 2.598 -0.892
C12 0.137 2.236 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.09262.67182.25163.40792.67132.19003.65704.99525.45765.45764.8306
C21.09262.25051.44982.37742.23821.39002.60134.16694.46224.46223.8552
H32.67182.25051.09262.18634.41143.39453.65352.63343.69973.69972.9410
C42.25161.44981.09261.39403.42002.36262.59822.75453.34293.34292.6254
C53.40792.37742.18631.39403.59802.53761.76182.15532.18642.18641.5213
H62.67132.23824.41143.42003.59801.08972.48515.73675.43655.43655.0553
C72.19001.39003.39452.36262.53761.08971.75214.65934.47344.47344.0260
S83.65702.60133.65352.59821.76182.48511.75213.78623.14533.14532.8641
H94.99524.16692.63342.75452.15535.73674.65933.78621.78571.78571.1025
H105.45764.46223.69973.34292.18645.43654.47343.14531.78571.78401.1045
H115.45764.46223.69973.34292.18645.43654.47343.14531.78571.78401.1045
C124.83063.85522.94102.62541.52135.05534.02602.86411.10251.10451.1045

picture of Thiophene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 124.059 H1 C2 C7 123.360
C2 C4 H3 123.948 C2 C4 C5 113.418
C2 C7 H6 128.597 C2 C7 S8 111.240
H3 C4 C5 122.634 C4 C2 C7 112.581
C4 C5 S8 110.293 C4 C5 C12 128.409
C5 S8 C7 92.468 C5 C12 H9 109.421
C5 C12 H10 111.757 C5 C12 H11 111.757
H6 C7 S8 120.163 S8 C5 C12 121.299
H9 C12 H10 108.020 H9 C12 H11 108.020
H10 C12 H11 107.722
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.310      
2 C -0.352      
3 H 0.333      
4 C -0.147      
5 C -0.187      
6 H 0.317      
7 C -0.344      
8 S -0.058      
9 H 0.178      
10 H 0.156      
11 H 0.156      
12 C -0.363      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.630 0.440 0.000 0.768
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.214 -0.230 0.000
y -0.230 -35.794 0.000
z 0.000 0.000 -45.621
Traceless
 xyz
x 0.493 -0.230 0.000
y -0.230 7.123 0.000
z 0.000 0.000 -7.617
Polar
3z2-r2-15.233
x2-y2-4.420
xy-0.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.554 0.278 0.000
y 0.278 12.458 0.000
z 0.000 0.000 5.024


<r2> (average value of r2) Å2
<r2> 136.257
(<r2>)1/2 11.673