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

using model chemistry: HF/SDD

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/SDD
 hartrees
Energy at 0K-590.224769
Energy at 298.15K-590.231295
Nuclear repulsion energy269.700494
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/SDD
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 3481 3134 4.72      
2 A 3430 3088 9.83      
3 A 3412 3072 13.55      
4 A 3299 2970 26.71      
5 A 3203 2884 47.60      
6 A 1760 1585 5.32      
7 A 1664 1498 11.54      
8 A 1641 1477 18.59      
9 A 1577 1420 1.93      
10 A 1485 1337 0.37      
11 A 1389 1251 25.21      
12 A 1270 1144 17.37      
13 A 1216 1095 2.15      
14 A 1142 1028 2.04      
15 A 1083 975 2.84      
16 A 900 810 13.48      
17 A 755 680 4.64      
18 A 665 599 6.99      
19 A 585 527 1.14      
20 A 326 294 1.31      
21 A 3278 2951 31.49      
22 A 1631 1469 12.75      
23 A 1193 1074 2.30      
24 A 1076 969 0.43      
25 A 984 886 14.50      
26 A 819 738 126.01      
27 A 625 563 0.06      
28 A 508 457 7.01      
29 A 249 224 6.44      
30 A 128 116 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 22385.9 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 20156.3 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/SDD
ABC
0.17074 0.10173 0.06450

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.423 -1.486 0.000
C2 -1.464 -1.012 0.000
H3 -2.117 1.111 0.000
C4 -1.292 0.428 0.000
C5 0.000 0.832 0.000
H6 -0.140 -2.746 0.000
C7 -0.296 -1.691 0.000
S8 1.101 -0.585 0.000
H9 -0.259 2.946 0.000
H10 1.163 2.412 0.876
H11 1.163 2.412 -0.876
C12 0.551 2.228 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.07032.61572.22413.35352.60762.13733.63804.93235.36895.36894.7590
C21.07032.22181.45082.35422.18121.35092.60034.13734.40354.40353.8160
H32.61572.22181.07122.13584.33453.34233.63812.61103.63593.63592.8930
C42.22411.45081.07121.35363.37692.34192.59892.72103.27553.27552.5764
C53.35352.35422.13581.35363.58022.53991.79412.13022.14872.14871.5016
H62.60762.18124.33453.37693.58021.06632.49215.69315.39135.39135.0221
C72.13731.35093.34232.34192.53991.06631.78184.63704.44154.44154.0098
S83.63802.60033.63812.59891.79412.49211.78183.78393.12253.12252.8665
H94.93234.13732.61102.72102.13025.69314.63703.78391.75411.75411.0827
H105.36894.40353.63593.27552.14875.39134.44153.12251.75411.75201.0842
H115.36894.40353.63593.27552.14875.39134.44153.12251.75411.75201.0842
C124.75903.81602.89302.57641.50165.02214.00982.86651.08271.08421.0842

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 123.095 H1 C2 C7 123.539
C2 C4 H3 122.810 C2 C4 C5 114.126
C2 C7 H6 128.560 C2 C7 S8 111.467
H3 C4 C5 123.064 C4 C2 C7 113.366
C4 C5 S8 110.531 C4 C5 C12 128.865
C5 S8 C7 90.511 C5 C12 H9 109.975
C5 C12 H10 111.371 C5 C12 H11 111.371
H6 C7 S8 119.974 S8 C5 C12 120.604
H9 C12 H10 108.099 H9 C12 H11 108.099
H10 C12 H11 107.800
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.226      
2 C -0.102      
3 H 0.237      
4 C -0.256      
5 C -0.044      
6 H 0.249      
7 C -0.483      
8 S 0.187      
9 H 0.197      
10 H 0.203      
11 H 0.203      
12 C -0.617      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.058 0.748 0.000 1.295
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.827 1.374 0.000
y 1.374 -37.754 0.000
z 0.000 0.000 -48.201
Traceless
 xyz
x 0.151 1.374 0.000
y 1.374 7.760 0.000
z 0.000 0.000 -7.911
Polar
3z2-r2-15.821
x2-y2-5.073
xy1.374
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.795 0.267 0.000
y 0.267 10.805 0.000
z 0.000 0.000 4.442


<r2> (average value of r2) Å2
<r2> 181.234
(<r2>)1/2 13.462