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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-592.242092
Energy at 298.15K-592.248266
Nuclear repulsion energy267.551931
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 3304 3179 1.31      
2 A 3241 3118 8.48      
3 A 3223 3101 10.26      
4 A 3126 3007 14.80      
5 A 3040 2924 32.82      
6 A 1635 1573 3.96      
7 A 1546 1487 2.36      
8 A 1531 1472 18.91      
9 A 1467 1411 0.95      
10 A 1390 1337 0.85      
11 A 1293 1244 15.75      
12 A 1190 1145 15.91      
13 A 1132 1089 1.76      
14 A 1083 1042 3.51      
15 A 1014 976 1.76      
16 A 842 810 9.57      
17 A 704 678 4.12      
18 A 620 597 4.93      
19 A 547 526 0.91      
20 A 306 294 1.13      
21 A 3098 2980 18.81      
22 A 1524 1466 10.70      
23 A 1097 1055 2.25      
24 A 945 909 0.47      
25 A 864 831 7.97      
26 A 723 696 81.08      
27 A 579 557 0.39      
28 A 466 448 4.68      
29 A 230 221 3.58      
30 A 120 115 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 20939.1 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 20143.4 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/6-31G
ABC
0.16651 0.10090 0.06357

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 -2.452 -1.478 0.000
C2 -1.479 -1.000 0.000
H3 -2.130 1.128 0.000
C4 -1.302 0.429 0.000
C5 0.000 0.844 0.000
H6 -0.150 -2.767 0.000
C7 -0.310 -1.700 0.000
S8 1.118 -0.596 0.000
H9 -0.268 2.959 0.000
H10 1.173 2.429 0.884
H11 1.173 2.429 -0.884
C12 0.553 2.234 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08352.62572.22633.37652.63842.15303.67674.94495.40205.40204.7754
C21.08352.22601.44002.36412.21081.36232.62814.14034.42444.42443.8197
H32.62572.22601.08422.14924.36963.36333.67712.61153.65833.65832.9022
C42.22631.44001.08421.36663.39682.34852.62762.73333.30273.30272.5884
C53.37652.36412.14921.36663.61372.56291.82262.13182.16102.16101.4959
H62.63842.21084.36963.39683.61371.07862.51375.72675.43405.43405.0497
C72.15301.36233.36332.34852.56291.07861.80514.65914.47584.47584.0276
S83.67672.62813.67712.62761.82262.51371.80513.81513.15223.15222.8854
H94.94494.14032.61152.73332.13185.72674.65913.81511.77101.77101.0952
H105.40204.42443.65833.30272.16105.43404.47583.15221.77101.76811.0970
H115.40204.42443.65833.30272.16105.43404.47583.15221.77101.76811.0970
C124.77543.81972.90222.58841.49595.04974.02762.88541.09521.09701.0970

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 123.205 H1 C2 C7 122.949
C2 C4 H3 123.118 C2 C4 C5 114.753
C2 C7 H6 129.479 C2 C7 S8 111.372
H3 C4 C5 122.129 C4 C2 C7 113.846
C4 C5 S8 110.134 C4 C5 C12 129.389
C5 S8 C7 89.895 C5 C12 H9 109.748
C5 C12 H10 111.985 C5 C12 H11 111.985
H6 C7 S8 119.149 S8 C5 C12 120.477
H9 C12 H10 107.776 H9 C12 H11 107.776
H10 C12 H11 107.384
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 0.139      
2 C -0.048      
3 H 0.135      
4 C -0.050      
5 C -0.281      
6 H 0.163      
7 C -0.460      
8 S 0.379      
9 H 0.157      
10 H 0.163      
11 H 0.163      
12 C -0.460      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.850 0.678 0.000 1.087
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.591 1.223 0.000
y 1.223 -36.851 0.000
z 0.000 0.000 -46.276
Traceless
 xyz
x -0.027 1.223 0.000
y 1.223 7.082 0.000
z 0.000 0.000 -7.055
Polar
3z2-r2-14.110
x2-y2-4.739
xy1.223
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.189 0.394 0.000
y 0.394 11.614 0.000
z 0.000 0.000 4.591


<r2> (average value of r2) Å2
<r2> 182.630
(<r2>)1/2 13.514