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

using model chemistry: HF/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 HF/CEP-31G*
 hartrees
Energy at 0K-40.844670
Energy at 298.15K-40.851135
Nuclear repulsion energy107.747012
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 HF/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 3446 3094 7.50      
2 A 3407 3059 15.26      
3 A 3390 3044 12.74      
4 A 3308 2970 33.68      
5 A 3227 2898 57.04      
6 A 1757 1578 2.63      
7 A 1650 1482 15.14      
8 A 1621 1455 8.15      
9 A 1549 1391 6.10      
10 A 1492 1340 0.44      
11 A 1363 1224 11.07      
12 A 1263 1134 14.98      
13 A 1187 1066 1.30      
14 A 1124 1009 1.23      
15 A 1074 964 1.82      
16 A 910 817 18.41      
17 A 792 711 0.30      
18 A 712 639 4.51      
19 A 576 517 0.92      
20 A 314 282 0.81      
21 A 3290 2955 41.30      
22 A 1610 1445 7.15      
23 A 1156 1038 0.21      
24 A 1038 933 0.23      
25 A 956 858 18.01      
26 A 809 727 102.37      
27 A 594 534 0.00      
28 A 493 443 6.45      
29 A 246 221 4.52      
30 A 126 113 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 22238.2 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 19969.9 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 HF/CEP-31G*
ABC
0.17446 0.10193 0.06512

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.692 -2.206 0.000
C2 -0.909 -1.463 0.000
H3 -2.137 0.411 0.000
C4 -1.152 -0.030 0.000
C5 0.000 0.711 0.000
H6 0.881 -2.740 0.000
C7 0.423 -1.766 0.000
S8 1.404 -0.329 0.000
H9 -0.847 2.679 0.000
H10 0.681 2.568 0.883
H11 0.681 2.568 -0.883
C12 0.142 2.222 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.07882.65502.24223.37222.62762.16013.62024.95815.40395.40394.7926
C21.07882.24091.45412.35692.19871.36622.57634.14334.42284.42283.8322
H32.65502.24091.07902.15814.36323.36063.61742.60963.65683.65682.9106
C42.24221.45411.07901.36993.38802.34432.57362.72643.29983.29982.5970
C53.37222.35692.15811.36993.56132.51261.74702.14292.16612.16611.5175
H62.62762.19874.36323.38803.56131.07622.46675.68795.38455.38455.0163
C72.16011.36623.36062.34432.51261.07621.73964.62314.43054.43053.9976
S83.62022.57633.61742.57361.74702.46671.73963.75713.11383.11382.8460
H94.95814.14332.60962.72642.14295.68794.62313.75711.76781.76781.0893
H105.40394.42283.65683.29982.16615.38454.43053.11381.76781.76591.0909
H115.40394.42283.65683.29982.16615.38454.43053.11381.76781.76591.0909
C124.79263.83222.91062.59701.51755.01633.99762.84601.08931.09091.0909

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 123.888 H1 C2 C7 123.701
C2 C4 H3 123.744 C2 C4 C5 113.111
C2 C7 H6 127.981 C2 C7 S8 111.527
H3 C4 C5 123.145 C4 C2 C7 112.411
C4 C5 S8 110.733 C4 C5 C12 128.089
C5 S8 C7 92.218 C5 C12 H9 109.483
C5 C12 H10 111.234 C5 C12 H11 111.234
H6 C7 S8 120.492 S8 C5 C12 121.178
H9 C12 H10 108.363 H9 C12 H11 108.363
H10 C12 H11 108.072
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.287      
2 C -0.315      
3 H 0.305      
4 C -0.124      
5 C -0.275      
6 H 0.298      
7 C -0.314      
8 S -0.061      
9 H 0.138      
10 H 0.122      
11 H 0.122      
12 C -0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.840 0.375 0.000 0.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.202 -0.186 0.000
y -0.186 -36.335 0.000
z 0.000 0.000 -46.452
Traceless
 xyz
x 0.192 -0.186 0.000
y -0.186 7.492 0.000
z 0.000 0.000 -7.684
Polar
3z2-r2-15.367
x2-y2-4.867
xy-0.186
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.234 0.338 0.000
y 0.338 11.302 0.000
z 0.000 0.000 4.932


<r2> (average value of r2) Å2
<r2> 134.833
(<r2>)1/2 11.612