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

using model chemistry: B3LYP/3-21G

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/3-21G
 hartrees
Energy at 0K-589.290978
Energy at 298.15K-589.297152
Nuclear repulsion energy267.717249
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/3-21G
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 3298 3182 0.80      
2 A 3238 3124 3.31      
3 A 3222 3108 6.15      
4 A 3121 3012 9.36      
5 A 3047 2940 20.77      
6 A 1622 1565 3.04      
7 A 1556 1501 3.54      
8 A 1514 1461 16.90      
9 A 1467 1416 3.67      
10 A 1383 1334 0.38      
11 A 1297 1252 16.55      
12 A 1175 1133 14.69      
13 A 1133 1094 3.22      
14 A 1069 1031 2.10      
15 A 1013 978 1.99      
16 A 842 813 10.26      
17 A 690 666 4.95      
18 A 614 592 4.73      
19 A 544 525 1.04      
20 A 301 290 1.21      
21 A 3094 2985 13.01      
22 A 1547 1493 10.66      
23 A 1099 1060 3.53      
24 A 952 919 0.51      
25 A 869 839 7.27      
26 A 733 707 91.61      
27 A 583 563 0.12      
28 A 466 450 5.94      
29 A 228 220 4.14      
30 A 120 116 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 20917.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 20183.0 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/3-21G
ABC
0.16680 0.10097 0.06365

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.452 -1.466 0.000
C2 -1.478 -0.996 0.000
H3 -2.124 1.132 0.000
C4 -1.297 0.434 0.000
C5 0.000 0.842 0.000
H6 -0.172 -2.767 0.000
C7 -0.318 -1.700 0.000
S8 1.117 -0.598 0.000
H9 -0.264 2.957 0.000
H10 1.176 2.417 0.887
H11 1.176 2.417 -0.887
C12 0.558 2.233 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08162.61922.22373.36792.62562.14693.67344.93465.38815.38814.7690
C21.08162.22441.44172.35922.20041.35672.62554.13534.41404.41403.8175
H32.61922.22441.08222.14334.36063.35893.67362.60513.65033.65032.8984
C42.22371.44171.08221.35983.39292.34772.62532.72613.29183.29182.5839
C53.36792.35922.14331.35983.61352.56231.82272.13062.15632.15631.4982
H62.62562.20044.36063.39293.61351.07692.52315.72445.42955.42955.0529
C72.14691.35673.35892.34772.56231.07691.80964.65704.46904.46904.0294
S83.67342.62553.67362.62531.82272.52311.80963.81333.14343.14342.8856
H94.93464.13532.60512.72612.13065.72444.65703.81331.77491.77491.0948
H105.38814.41403.65033.29182.15635.42954.46903.14341.77491.77351.0966
H115.38814.41403.65033.29182.15635.42954.46903.14341.77491.77351.0966
C124.76903.81752.89842.58391.49825.05294.02942.88561.09481.09661.0966

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 122.959 H1 C2 C7 123.011
C2 C4 H3 122.983 C2 C4 C5 114.700
C2 C7 H6 129.065 C2 C7 S8 111.231
H3 C4 C5 122.317 C4 C2 C7 114.031
C4 C5 S8 110.312 C4 C5 C12 129.340
C5 S8 C7 89.726 C5 C12 H9 109.519
C5 C12 H10 111.465 C5 C12 H11 111.465
H6 C7 S8 119.703 S8 C5 C12 120.348
H9 C12 H10 108.178 H9 C12 H11 108.178
H10 C12 H11 107.921
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.196     0.190
2 C -0.146     -0.213
3 H 0.189     0.187
4 C -0.147     -0.229
5 C -0.336     0.101
6 H 0.223     0.233
7 C -0.540     -0.255
8 S 0.512     -0.041
9 H 0.214     0.119
10 H 0.219     0.142
11 H 0.219     0.142
12 C -0.602     -0.376


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.806 0.684 0.000 1.057
CHELPG        
AIM        
ESP -0.783 0.687 0.000 1.042


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.336 1.176 0.000
y 1.176 -36.674 0.000
z 0.000 0.000 -47.063
Traceless
 xyz
x 0.532 1.176 0.000
y 1.176 7.525 0.000
z 0.000 0.000 -8.057
Polar
3z2-r2-16.115
x2-y2-4.662
xy1.176
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.708 0.416 0.000
y 0.416 11.187 0.000
z 0.000 0.000 3.964


<r2> (average value of r2) Å2
<r2> 182.479
(<r2>)1/2 13.508