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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-592.257285
Energy at 298.15K-592.263446
Nuclear repulsion energy273.530963
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 B1B95/6-31G*
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 3302 3135 1.05      
2 A 3261 3096 6.85      
3 A 3244 3079 8.21      
4 A 3169 3008 11.35      
5 A 3076 2920 29.61      
6 A 1633 1550 2.75      
7 A 1538 1460 5.78      
8 A 1520 1443 10.21      
9 A 1441 1368 0.27      
10 A 1411 1339 0.55      
11 A 1275 1211 10.74      
12 A 1207 1146 12.19      
13 A 1118 1061 2.16      
14 A 1080 1026 3.34      
15 A 1006 955 1.27      
16 A 874 829 13.10      
17 A 759 721 0.11      
18 A 685 651 2.13      
19 A 554 526 0.76      
20 A 301 285 0.77      
21 A 3139 2980 13.63      
22 A 1508 1432 8.64      
23 A 1069 1014 1.15      
24 A 914 868 0.41      
25 A 837 794 9.92      
26 A 711 675 63.77      
27 A 576 547 0.28      
28 A 477 453 4.85      
29 A 234 222 2.75      
30 A 98 93 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 21008.2 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 19943.1 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 B1B95/6-31G*
ABC
0.17730 0.10431 0.06648

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.378 -1.553 0.000
C2 -1.429 -1.033 0.000
H3 -2.135 1.068 0.000
C4 -1.296 0.382 0.000
C5 0.000 0.809 0.000
H6 -0.026 -2.730 0.000
C7 -0.226 -1.669 0.000
S8 1.076 -0.546 0.000
H9 -0.323 2.909 0.000
H10 1.127 2.421 0.882
H11 1.127 2.421 -0.882
C12 0.515 2.210 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08252.63252.21733.35202.62962.15563.59834.91305.37125.37124.7465
C21.08252.21701.42182.33142.20101.36052.55194.09474.38584.38583.7808
H32.63252.21701.08342.15074.34423.33723.59412.58353.63933.63932.8855
C42.21731.42181.08341.36483.36152.31382.54772.70803.28673.28672.5730
C53.35202.33142.15071.36483.53932.48821.73032.12472.15492.15491.4922
H62.62962.20104.34423.36153.53931.07982.44705.64715.35125.35124.9693
C72.15561.36053.33722.31382.48821.07981.71944.57914.39644.39643.9485
S83.59832.55193.59412.54771.73032.44701.71943.72743.09503.09502.8119
H94.91304.09472.58352.70802.12475.64714.57913.72741.76551.76551.0915
H105.37124.38583.63933.28672.15495.35124.39643.09501.76551.76401.0937
H115.37124.38583.63933.28672.15495.35124.39643.09501.76551.76401.0937
C124.74653.78082.88552.57301.49224.96933.94852.81191.09151.09371.0937

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 124.035 H1 C2 C7 123.455
C2 C4 H3 123.935 C2 C4 C5 113.560
C2 C7 H6 128.467 C2 C7 S8 111.371
H3 C4 C5 122.505 C4 C2 C7 112.510
C4 C5 S8 110.240 C4 C5 C12 128.418
C5 S8 C7 92.320 C5 C12 H9 109.671
C5 C12 H10 111.958 C5 C12 H11 111.958
H6 C7 S8 120.162 S8 C5 C12 121.342
H9 C12 H10 107.790 H9 C12 H11 107.790
H10 C12 H11 107.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.165      
2 C -0.122      
3 H 0.159      
4 C -0.137      
5 C -0.166      
6 H 0.196      
7 C -0.394      
8 S 0.278      
9 H 0.184      
10 H 0.188      
11 H 0.188      
12 C -0.537      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.475 0.509 0.000 0.696
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.560 0.720 0.000
y 0.720 -36.613 0.000
z 0.000 0.000 -45.520
Traceless
 xyz
x 0.506 0.720 0.000
y 0.720 6.427 0.000
z 0.000 0.000 -6.933
Polar
3z2-r2-13.867
x2-y2-3.947
xy0.720
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.007 0.419 0.000
y 0.419 11.503 0.000
z 0.000 0.000 4.945


<r2> (average value of r2) Å2
<r2> 175.884
(<r2>)1/2 13.262