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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-590.339697
Energy at 298.15K-590.346253
Nuclear repulsion energy273.597053
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/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 3424 3090 3.40      
2 A 3384 3054 9.76      
3 A 3367 3039 12.23      
4 A 3271 2952 20.32      
5 A 3187 2877 37.55      
6 A 1770 1598 4.07      
7 A 1655 1493 13.21      
8 A 1620 1463 8.41      
9 A 1552 1401 2.07      
10 A 1506 1360 0.06      
11 A 1385 1250 10.49      
12 A 1265 1141 16.06      
13 A 1205 1088 0.70      
14 A 1129 1019 0.56      
15 A 1079 974 1.10      
16 A 918 829 16.93      
17 A 800 722 0.82      
18 A 713 644 5.10      
19 A 590 533 0.83      
20 A 326 294 0.98      
21 A 3246 2930 24.03      
22 A 1607 1451 6.82      
23 A 1163 1049 0.38      
24 A 1045 943 0.41      
25 A 949 856 8.82      
26 A 802 724 74.56      
27 A 617 557 0.01      
28 A 516 466 4.08      
29 A 252 228 3.28      
30 A 123 111 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 22233.0 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 20067.5 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/6-31G**
ABC
0.17797 0.10389 0.06640

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.379 -1.531 0.000
C2 -1.429 -1.029 0.000
H3 -2.114 1.083 0.000
C4 -1.283 0.401 0.000
C5 0.000 0.809 0.000
H6 -0.071 -2.725 0.000
C7 -0.249 -1.669 0.000
S8 1.075 -0.557 0.000
H9 -0.299 2.915 0.000
H10 1.136 2.409 0.877
H11 1.136 2.409 -0.877
C12 0.527 2.214 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.07402.62762.22183.33682.59812.13413.58874.90925.35275.35274.7403
C21.07402.22041.43822.32842.17251.34232.54864.10364.37894.37893.7876
H32.62762.22041.07472.13174.32123.32403.58612.57933.61803.61802.8728
C42.22181.43821.07471.34613.35302.31392.54552.69983.26373.26372.5614
C53.33682.32842.13171.34613.53432.48991.73822.12802.14982.14981.5008
H62.59812.17254.32123.35303.53431.07112.45225.64515.34685.34684.9750
C72.13411.34233.32402.31392.48991.07111.72904.58454.39544.39543.9595
S83.58872.54863.58612.54551.73822.45221.72903.73463.09413.09412.8248
H94.90924.10362.57932.69982.12805.64514.58453.73461.75611.75611.0836
H105.35274.37893.61803.26372.14985.34684.39543.09411.75611.75401.0855
H115.35274.37893.61803.26372.14985.34684.39543.09411.75611.75401.0855
C124.74033.78762.87282.56141.50084.97503.95952.82481.08361.08551.0855

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 123.705 H1 C2 C7 123.689
C2 C4 H3 123.513 C2 C4 C5 113.452
C2 C7 H6 128.013 C2 C7 S8 111.542
H3 C4 C5 123.035 C4 C2 C7 112.606
C4 C5 S8 110.599 C4 C5 C12 128.160
C5 S8 C7 91.801 C5 C12 H9 109.798
C5 C12 H10 111.444 C5 C12 H11 111.444
H6 C7 S8 120.444 S8 C5 C12 121.241
H9 C12 H10 108.116 H9 C12 H11 108.116
H10 C12 H11 107.797
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.154 0.113    
2 C -0.111 -0.099    
3 H 0.148 0.135    
4 C -0.130 -0.162    
5 C -0.220 0.021    
6 H 0.176 0.196    
7 C -0.364 -0.220    
8 S 0.274 -0.060    
9 H 0.134 0.022    
10 H 0.139 0.048    
11 H 0.139 0.048    
12 C -0.339 -0.042    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.783 0.516 0.000 0.938
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.534 0.934 0.000
y 0.934 -37.143 0.000
z 0.000 0.000 -46.748
Traceless
 xyz
x 0.412 0.934 0.000
y 0.934 6.998 0.000
z 0.000 0.000 -7.409
Polar
3z2-r2-14.819
x2-y2-4.391
xy0.934
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.884 0.301 0.000
y 0.301 10.768 0.000
z 0.000 0.000 4.955


<r2> (average value of r2) Å2
<r2> 176.507
(<r2>)1/2 13.286