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

using model chemistry: B3PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-592.224448
Energy at 298.15K-592.230608
Nuclear repulsion energy273.281436
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(2df,p)
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 3269 3143 1.03      
2 A 3227 3102 5.44      
3 A 3209 3085 7.02      
4 A 3134 3013 9.69      
5 A 3041 2923 28.99      
6 A 1599 1537 3.47      
7 A 1502 1444 4.91      
8 A 1485 1428 9.03      
9 A 1407 1353 0.28      
10 A 1384 1331 0.55      
11 A 1257 1209 10.16      
12 A 1187 1141 10.26      
13 A 1099 1056 1.52      
14 A 1070 1029 4.15      
15 A 990 952 1.87      
16 A 862 829 12.15      
17 A 757 728 0.09      
18 A 679 653 1.73      
19 A 553 531 0.73      
20 A 301 289 0.78      
21 A 3104 2984 11.37      
22 A 1472 1415 7.40      
23 A 1054 1013 1.22      
24 A 912 877 0.23      
25 A 836 804 11.23      
26 A 710 683 52.64      
27 A 580 557 0.19      
28 A 480 462 4.03      
29 A 234 225 2.38      
30 A 90 87 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 20741.1 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 19940.5 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 B3PW91/6-31G(2df,p)
ABC
0.17747 0.10390 0.06634

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.378 -1.557 0.000
C2 -1.428 -1.037 0.000
H3 -2.139 1.064 0.000
C4 -1.298 0.380 0.000
C5 0.000 0.811 0.000
H6 -0.016 -2.734 0.000
C7 -0.222 -1.673 0.000
S8 1.075 -0.545 0.000
H9 -0.323 2.916 0.000
H10 1.129 2.426 0.882
H11 1.129 2.426 -0.882
C12 0.515 2.214 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08342.63182.21783.35652.63892.15963.59854.92245.38045.38044.7535
C21.08342.21791.42272.33562.20721.36362.55064.10424.39454.39453.7876
H32.63182.21791.08432.15414.35073.34193.59392.59383.64923.64922.8932
C42.21781.42271.08431.36783.36692.31802.54632.71693.29513.29512.5794
C53.35652.33562.15411.36783.54502.49451.73012.12912.15922.15921.4945
H62.63892.20724.35073.36693.54501.08012.44595.65775.35885.35884.9763
C72.15961.36363.34192.31802.49451.08011.71924.59024.40594.40593.9568
S83.59852.55063.59392.54631.73012.44591.71923.73203.09973.09972.8148
H94.92244.10422.59382.71692.12915.65774.59023.73201.76831.76831.0934
H105.38044.39453.64923.29512.15925.35884.40593.09971.76831.76481.0956
H115.38044.39453.64923.29512.15925.35884.40593.09971.76831.76481.0956
C124.75353.78762.89322.57941.49454.97633.95682.81481.09341.09561.0956

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 123.936 H1 C2 C7 123.488
C2 C4 H3 123.872 C2 C4 C5 113.635
C2 C7 H6 128.800 C2 C7 S8 111.139
H3 C4 C5 122.493 C4 C2 C7 112.576
C4 C5 S8 110.011 C4 C5 C12 128.565
C5 S8 C7 92.639 C5 C12 H9 109.745
C5 C12 H10 112.029 C5 C12 H11 112.029
H6 C7 S8 120.061 S8 C5 C12 121.424
H9 C12 H10 107.769 H9 C12 H11 107.769
H10 C12 H11 107.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.132      
2 C -0.107      
3 H 0.126      
4 C -0.210      
5 C 0.175      
6 H 0.155      
7 C -0.205      
8 S -0.005      
9 H 0.158      
10 H 0.163      
11 H 0.163      
12 C -0.546      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.511 0.518 0.000 0.728
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.671 0.729 0.000
y 0.729 -36.640 0.000
z 0.000 0.000 -45.147
Traceless
 xyz
x 0.223 0.729 0.000
y 0.729 6.269 0.000
z 0.000 0.000 -6.492
Polar
3z2-r2-12.984
x2-y2-4.030
xy0.729
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.451 0.462 0.000
y 0.462 12.067 0.000
z 0.000 0.000 5.672


<r2> (average value of r2) Å2
<r2> 176.181
(<r2>)1/2 13.273