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 C5H6S (Thiophene, 2-methyl-)

using model chemistry: B3LYP/6-31G*

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/6-31G*
 hartrees
Energy at 0K-592.321465
Energy at 298.15K-592.327596
Nuclear repulsion energy271.595502
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/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 3271 3141 1.54      
2 A 3226 3098 9.25      
3 A 3209 3082 9.61      
4 A 3126 3002 13.84      
5 A 3044 2923 33.71      
6 A 1613 1549 2.45      
7 A 1526 1466 1.87      
8 A 1509 1449 12.90      
9 A 1445 1388 0.64      
10 A 1398 1342 0.81      
11 A 1274 1223 10.58      
12 A 1184 1137 12.24      
13 A 1116 1071 1.30      
14 A 1075 1032 2.97      
15 A 1003 964 1.59      
16 A 856 822 12.04      
17 A 743 713 0.64      
18 A 661 635 2.73      
19 A 552 530 0.71      
20 A 304 292 0.80      
21 A 3095 2972 17.76      
22 A 1509 1449 7.41      
23 A 1073 1030 0.97      
24 A 906 870 0.43      
25 A 832 799 9.67      
26 A 702 674 56.75      
27 A 573 551 0.56      
28 A 472 453 4.21      
29 A 231 222 2.41      
30 A 106 101 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 20815.0 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 19988.7 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/6-31G*
ABC
0.17451 0.10288 0.06551

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.396 -1.546 0.000
C2 -1.440 -1.033 0.000
H3 -2.141 1.077 0.000
C4 -1.301 0.390 0.000
C5 0.000 0.818 0.000
H6 -0.046 -2.746 0.000
C7 -0.239 -1.681 0.000
S8 1.087 -0.556 0.000
H9 -0.317 2.928 0.000
H10 1.135 2.436 0.884
H11 1.135 2.436 -0.884
C12 0.521 2.224 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08492.63542.22443.36582.63882.16193.62104.93375.39505.39504.7671
C21.08492.22381.43002.34512.20821.36512.57164.11764.40994.40993.8024
H32.63542.22381.08572.15704.35943.35103.61742.59883.65553.65552.8989
C42.22441.43001.08571.36933.37742.32772.56782.72223.30163.30162.5853
C53.36582.34512.15701.36933.56362.51031.75112.13452.16522.16521.5001
H62.63882.20824.35943.37743.56361.08172.46585.68065.38735.38735.0023
C72.16191.36513.35102.32772.51031.08171.73894.61044.42934.42933.9789
S83.62102.57163.61742.56781.75112.46581.73893.75613.11943.11942.8369
H94.93374.11762.59882.72222.13455.68064.61043.75611.77041.77041.0947
H105.39504.40993.65553.30162.16525.38734.42933.11941.77041.76791.0970
H115.39504.40993.65553.30162.16525.38734.42933.11941.77041.76791.0970
C124.76713.80242.89892.58531.50015.00233.97892.83691.09471.09701.0970

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 123.793 H1 C2 C7 123.458
C2 C4 H3 123.676 C2 C4 C5 113.792
C2 C7 H6 128.600 C2 C7 S8 111.310
H3 C4 C5 122.532 C4 C2 C7 112.750
C4 C5 S8 110.158 C4 C5 C12 128.517
C5 S8 C7 91.990 C5 C12 H9 109.705
C5 C12 H10 112.027 C5 C12 H11 112.027
H6 C7 S8 120.091 S8 C5 C12 121.324
H9 C12 H10 107.759 H9 C12 H11 107.759
H10 C12 H11 107.373
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.138 0.102   0.152
2 C -0.095 -0.083   -0.159
3 H 0.132 0.126   0.149
4 C -0.124 -0.175   -0.189
5 C -0.105 0.034   0.092
6 H 0.169 0.175   0.212
7 C -0.347 -0.209   -0.256
8 S 0.230 -0.036   -0.022
9 H 0.166 0.026   0.086
10 H 0.170 0.046   0.107
11 H 0.170 0.046   0.107
12 C -0.502 -0.053   -0.278


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.521 0.509 0.000 0.728
CHELPG -0.468 0.453 0.000 0.651
AIM        
ESP -0.524 0.506 0.000 0.728


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.008 0.758 0.000
y 0.758 -37.063 0.000
z 0.000 0.000 -45.652
Traceless
 xyz
x 0.349 0.758 0.000
y 0.758 6.267 0.000
z 0.000 0.000 -6.616
Polar
3z2-r2-13.232
x2-y2-3.945
xy0.758
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.143 0.428 0.000
y 0.428 11.671 0.000
z 0.000 0.000 4.942


<r2> (average value of r2) Å2
<r2> 178.231
(<r2>)1/2 13.350