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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-592.201435
Energy at 298.15K-592.207581
Nuclear repulsion energy272.453737
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3282 3140 1.08      
2 A 3239 3099 7.63      
3 A 3222 3082 8.50      
4 A 3145 3009 11.68      
5 A 3053 2921 31.53      
6 A 1618 1548 2.97      
7 A 1526 1460 2.91      
8 A 1514 1448 12.78      
9 A 1438 1376 0.16      
10 A 1402 1341 0.68      
11 A 1271 1216 11.20      
12 A 1197 1145 12.18      
13 A 1115 1066 2.08      
14 A 1078 1032 3.89      
15 A 1003 960 1.41      
16 A 866 829 12.90      
17 A 754 721 0.22      
18 A 676 647 2.17      
19 A 555 531 0.71      
20 A 304 291 0.86      
21 A 3114 2980 14.59      
22 A 1504 1439 8.87      
23 A 1067 1021 1.32      
24 A 905 866 0.42      
25 A 829 793 10.97      
26 A 703 672 65.10      
27 A 574 549 0.46      
28 A 475 454 4.91      
29 A 232 222 2.79      
30 A 103 98 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 20881.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19977.4 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 B3PW91/6-31G*
ABC
0.17581 0.10352 0.06596

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.388 -1.553 0.000
C2 -1.435 -1.034 0.000
H3 -2.142 1.071 0.000
C4 -1.300 0.385 0.000
C5 0.000 0.814 0.000
H6 -0.031 -2.740 0.000
C7 -0.230 -1.676 0.000
S8 1.081 -0.550 0.000
H9 -0.320 2.921 0.000
H10 1.132 2.429 0.884
H11 1.132 2.429 -0.884
C12 0.518 2.217 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08512.63562.22223.36242.63872.16183.61134.92815.38755.38754.7604
C21.08512.22141.42582.34012.20851.36512.56214.10904.40044.40043.7933
H32.63562.22141.08602.15744.35653.34733.60782.59583.65283.65282.8967
C42.22221.42581.08601.36953.37262.32252.55842.71843.29773.29772.5818
C53.36242.34012.15741.36953.55402.50071.74032.13062.16102.16101.4959
H62.63872.20854.35653.37263.55401.08222.45655.66775.37115.37114.9875
C72.16181.36513.34732.32252.50071.08221.72834.59744.41414.41413.9645
S83.61132.56213.60782.55841.74032.45651.72833.74253.10733.10732.8237
H94.92814.10902.59582.71842.13065.66774.59743.74251.77001.77001.0945
H105.38754.40043.65283.29772.16105.37114.41413.10731.77001.76841.0968
H115.38754.40043.65283.29772.16105.37114.41413.10731.77001.76841.0968
C124.76043.79332.89672.58181.49594.98753.96452.82371.09451.09681.0968

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 123.938 H1 C2 C7 123.437
C2 C4 H3 123.793 C2 C4 C5 113.667
C2 C7 H6 128.592 C2 C7 S8 111.302
H3 C4 C5 122.539 C4 C2 C7 112.625
C4 C5 S8 110.141 C4 C5 C12 128.535
C5 S8 C7 92.265 C5 C12 H9 109.705
C5 C12 H10 112.000 C5 C12 H11 112.000
H6 C7 S8 120.106 S8 C5 C12 121.324
H9 C12 H10 107.750 H9 C12 H11 107.750
H10 C12 H11 107.445
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.170     0.165
2 C -0.128     -0.173
3 H 0.164     0.162
4 C -0.149     -0.209
5 C -0.144     0.107
6 H 0.200     0.224
7 C -0.397     -0.275
8 S 0.271     -0.011
9 H 0.190     0.107
10 H 0.193     0.127
11 H 0.193     0.127
12 C -0.564     -0.350


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.504 0.527 0.000 0.729
CHELPG        
AIM        
ESP -0.506 0.522 0.000 0.727


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.570 0.750 0.000
y 0.750 -36.556 0.000
z 0.000 0.000 -45.630
Traceless
 xyz
x 0.522 0.750 0.000
y 0.750 6.545 0.000
z 0.000 0.000 -7.067
Polar
3z2-r2-14.133
x2-y2-4.015
xy0.750
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 177.072
(<r2>)1/2 13.307