return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: LSDA/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-590.180656
Energy at 298.15K-590.186679
Nuclear repulsion energy273.308404
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 LSDA/6-31+G**
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 3201 3153 1.31      
2 A 3162 3115 1.77      
3 A 3144 3097 4.44      
4 A 3076 3030 5.60      
5 A 2977 2932 25.99      
6 A 1577 1553 4.75      
7 A 1499 1477 8.91      
8 A 1425 1404 10.13      
9 A 1362 1342 2.26      
10 A 1347 1327 2.32      
11 A 1208 1190 11.40      
12 A 1186 1169 11.33      
13 A 1063 1047 6.48      
14 A 1040 1025 4.58      
15 A 955 940 2.17      
16 A 854 841 12.90      
17 A 744 733 0.07      
18 A 675 665 1.00      
19 A 548 540 0.63      
20 A 296 291 0.85      
21 A 3045 2999 5.40      
22 A 1409 1388 13.63      
23 A 1006 991 1.35      
24 A 867 854 0.21      
25 A 788 777 14.89      
26 A 668 658 83.42      
27 A 564 555 0.53      
28 A 469 462 7.44      
29 A 228 225 3.72      
30 A 90 88 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 20236.7 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 19933.1 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 LSDA/6-31+G**
ABC
0.17672 0.10455 0.06651

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.382 -1.568 0.000
C2 -1.427 -1.036 0.000
H3 -2.148 1.069 0.000
C4 -1.302 0.375 0.000
C5 0.000 0.812 0.000
H6 -0.004 -2.741 0.000
C7 -0.214 -1.670 0.000
S8 1.079 -0.539 0.000
H9 -0.344 2.906 0.000
H10 1.122 2.426 0.889
H11 1.122 2.426 -0.889
C12 0.506 2.204 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.09332.64772.22363.36752.65092.17023.61024.91655.38735.38734.7506
C21.09332.22481.41642.33482.22071.36902.55434.08774.39004.39003.7724
H32.64772.22481.09452.16334.37153.35333.60512.57473.65013.65012.8863
C42.22361.41641.09451.37303.37512.31662.54962.70593.29693.29692.5711
C53.36752.33482.16331.37303.55292.49181.72892.12172.15742.15741.4808
H62.65092.22074.37153.37513.55291.09072.45365.65685.36265.36264.9709
C72.17021.36903.35332.31662.49181.09071.71774.57814.39984.39983.9406
S83.61022.55433.60512.54961.72892.45361.71773.72713.09633.09632.8022
H94.91654.08772.57472.70592.12175.65684.57813.72711.78001.78001.1021
H105.38734.39003.65013.29692.15745.36264.39983.09631.78001.77871.1044
H115.38734.39003.65013.29692.15745.36264.39983.09631.78001.77871.1044
C124.75063.77242.88632.57111.48084.97093.94062.80221.10211.10441.1044

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 124.239 H1 C2 C7 123.227
C2 C4 H3 124.257 C2 C4 C5 113.646
C2 C7 H6 128.702 C2 C7 S8 111.189
H3 C4 C5 122.097 C4 C2 C7 112.534
C4 C5 S8 110.034 C4 C5 C12 128.532
C5 S8 C7 92.598 C5 C12 H9 109.592
C5 C12 H10 112.319 C5 C12 H11 112.319
H6 C7 S8 120.109 S8 C5 C12 121.434
H9 C12 H10 107.552 H9 C12 H11 107.552
H10 C12 H11 107.280
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.162      
2 C -0.235      
3 H 0.156      
4 C 0.020      
5 C -0.101      
6 H 0.191      
7 C -0.200      
8 S 0.032      
9 H 0.197      
10 H 0.208      
11 H 0.208      
12 C -0.637      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.297 0.651 0.000 0.716
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.636 0.650 0.000
y 0.650 -37.603 0.000
z 0.000 0.000 -46.943
Traceless
 xyz
x 0.636 0.650 0.000
y 0.650 6.687 0.000
z 0.000 0.000 -7.323
Polar
3z2-r2-14.646
x2-y2-4.034
xy0.650
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.647 0.473 0.000
y 0.473 13.361 0.000
z 0.000 0.000 7.401


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000