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

using model chemistry: BLYP/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 BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-592.222018
Energy at 298.15K-592.227999
Nuclear repulsion energy270.225617
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 BLYP/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 3180 3163 1.61      
2 A 3135 3117 9.10      
3 A 3117 3100 8.96      
4 A 3032 3016 12.97      
5 A 2953 2937 35.60      
6 A 1532 1523 2.51      
7 A 1458 1450 2.22      
8 A 1434 1426 8.85      
9 A 1379 1371 1.56      
10 A 1336 1329 0.95      
11 A 1223 1216 9.32      
12 A 1133 1127 9.21      
13 A 1072 1066 0.74      
14 A 1041 1035 3.79      
15 A 963 957 2.60      
16 A 819 814 9.67      
17 A 715 711 0.79      
18 A 633 630 2.25      
19 A 534 531 0.66      
20 A 294 292 0.70      
21 A 2998 2981 16.38      
22 A 1442 1434 5.33      
23 A 1031 1026 0.77      
24 A 867 862 0.25      
25 A 801 797 11.78      
26 A 679 675 41.52      
27 A 559 556 0.49      
28 A 459 457 3.20      
29 A 225 223 1.91      
30 A 96 96 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 20069.2 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 19958.8 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 BLYP/6-31G(2df,p)
ABC
0.17287 0.10179 0.06485

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.409 -1.551 0.000
C2 -1.448 -1.037 0.000
H3 -2.153 1.079 0.000
C4 -1.309 0.389 0.000
C5 0.000 0.824 0.000
H6 -0.039 -2.758 0.000
C7 -0.239 -1.691 0.000
S8 1.091 -0.558 0.000
H9 -0.316 2.944 0.000
H10 1.144 2.450 0.887
H11 1.144 2.450 -0.887
C12 0.525 2.236 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08952.64252.23033.38242.66052.17463.63774.95845.42405.42404.7903
C21.08952.23101.43342.35802.22461.37452.58354.13964.43514.43513.8219
H32.64252.23101.09042.16794.38163.36743.63332.61743.67933.67932.9171
C42.23031.43341.09041.37883.39422.33942.57942.74113.32433.32432.6024
C53.38242.35802.16791.37883.58222.52641.76032.14442.17762.17761.5066
H62.66052.22464.38163.39423.58221.08572.47315.70975.41425.41425.0258
C72.17461.37453.36742.33942.52641.08571.74714.63664.45564.45564.0008
S83.63772.58353.63332.57941.76032.47311.74713.77473.13673.13672.8504
H94.95844.13962.61742.74112.14445.70974.63663.77471.77941.77941.1006
H105.42404.43513.67933.32432.17765.41424.45563.13671.77941.77461.1029
H115.42404.43513.67933.32432.17765.41424.45563.13671.77941.77461.1029
C124.79033.82192.91712.60241.50665.02584.00082.85041.10061.10291.1029

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 123.688 H1 C2 C7 123.484
C2 C4 H3 123.682 C2 C4 C5 113.947
C2 C7 H6 129.059 C2 C7 S8 111.146
H3 C4 C5 122.371 C4 C2 C7 112.829
C4 C5 S8 109.922 C4 C5 C12 128.771
C5 S8 C7 92.156 C5 C12 H9 109.692
C5 C12 H10 112.200 C5 C12 H11 112.200
H6 C7 S8 119.796 S8 C5 C12 121.307
H9 C12 H10 107.710 H9 C12 H11 107.710
H10 C12 H11 107.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.081      
2 C -0.056      
3 H 0.075      
4 C -0.166      
5 C 0.264      
6 H 0.103      
7 C -0.126      
8 S -0.075      
9 H 0.118      
10 H 0.124      
11 H 0.124      
12 C -0.468      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.501 0.518 0.000 0.721
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.380 0.741 0.000
y 0.741 -37.485 0.000
z 0.000 0.000 -45.251
Traceless
 xyz
x -0.012 0.741 0.000
y 0.741 5.830 0.000
z 0.000 0.000 -5.818
Polar
3z2-r2-11.637
x2-y2-3.895
xy0.741
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.786 0.512 0.000
y 0.512 12.595 0.000
z 0.000 0.000 5.695


<r2> (average value of r2) Å2
<r2> 179.886
(<r2>)1/2 13.412