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 C5H10S (Thiophene, tetrahydro-2-methyl-)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-594.636518
Energy at 298.15K-594.648316
Nuclear repulsion energy310.516220
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*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3145 3009 27.76      
2 A 3142 3006 16.61      
3 A 3128 2992 25.65      
4 A 3115 2981 34.88      
5 A 3104 2970 26.61      
6 A 3083 2949 28.47      
7 A 3064 2931 13.56      
8 A 3064 2931 25.57      
9 A 3055 2922 44.92      
10 A 3051 2918 7.97      
11 A 1529 1463 1.57      
12 A 1523 1457 6.28      
13 A 1514 1448 6.00      
14 A 1509 1444 4.22      
15 A 1505 1440 3.28      
16 A 1434 1371 4.12      
17 A 1395 1334 1.57      
18 A 1372 1312 0.50      
19 A 1333 1276 0.19      
20 A 1317 1260 5.50      
21 A 1299 1243 26.23      
22 A 1251 1197 4.69      
23 A 1214 1161 6.55      
24 A 1171 1120 0.48      
25 A 1121 1073 0.10      
26 A 1088 1041 2.45      
27 A 1050 1004 3.94      
28 A 1049 1003 1.39      
29 A 983 941 3.16      
30 A 964 922 2.09      
31 A 913 874 0.86      
32 A 875 837 2.51      
33 A 859 821 1.88      
34 A 700 670 1.94      
35 A 642 614 2.97      
36 A 529 506 0.78      
37 A 461 441 0.09      
38 A 413 395 0.76      
39 A 284 272 1.09      
40 A 257 246 0.16      
41 A 242 231 0.21      
42 A 94 90 1.50      

Unscaled Zero Point Vibrational Energy (zpe) 31418.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 30057.9 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*
ABC
0.14008 0.09260 0.06115

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.273 0.128 0.209
H2 -2.218 0.010 1.297
H3 -2.849 1.036 -0.014
H4 -2.828 -0.725 -0.196
S5 0.119 -1.295 -0.068
C6 1.670 -0.369 0.282
H7 2.503 -0.842 -0.246
H8 1.878 -0.409 1.357
C9 -0.881 0.229 -0.397
H10 -0.968 0.331 -1.486
C11 1.421 1.068 -0.180
H12 1.579 1.139 -1.264
H13 2.118 1.764 0.302
C14 -0.036 1.382 0.149
H15 -0.362 2.339 -0.279
H16 -0.167 1.444 1.238

Atom - Atom Distances (Å)
  C1 H2 H3 H4 S5 C6 H7 H8 C9 H10 C11 H12 H13 C14 H15 H16
C11.09541.09751.09512.79773.97534.89534.34021.52252.14973.83194.24634.68662.56602.96282.6878
H21.09541.78021.77213.00414.03555.03884.11712.16923.06784.06714.71654.78132.82213.36932.5029
H31.09751.78021.76983.77454.74195.67705.12942.16192.49114.27394.60245.03012.83982.82072.9877
H41.09511.77211.76983.00444.53695.33244.96512.17762.49784.61134.90215.55853.51493.93333.7198
S52.79773.00413.77453.00441.83942.43312.43031.85222.41602.69953.07983.67212.69033.67133.0474
C63.97534.03554.74194.53691.83941.09371.09512.70643.25191.52992.16232.17962.44853.43192.7525
H74.89535.03885.67705.33242.43311.09371.77383.55243.86802.19552.41172.69013.39824.28093.8152
H84.34024.11715.12944.96512.43031.09511.77383.33044.08982.17983.05862.42702.88613.90422.7622
C91.52252.16922.16192.17761.85222.70643.55243.33041.09732.45912.76173.43981.53012.17542.1579
H102.14973.06782.49112.49782.41603.25193.86804.08981.09732.82012.68063.84302.15552.41943.0493
C113.83194.06714.27394.61132.69951.52992.19552.17982.45912.82011.09731.09671.52632.19212.1624
H124.24634.71654.60244.90213.07982.16232.41173.05862.76172.68061.09731.77012.15882.48483.0659
H134.68664.78135.03015.55853.67212.17962.69012.42703.43983.84301.09671.77012.19212.61102.4897
C142.56602.82212.83983.51492.69032.44853.39822.88611.53012.15551.52632.15882.19211.09741.0987
H152.96283.36932.82073.93333.67133.43194.28093.90422.17542.41942.19212.48482.61101.09741.7719
H162.68782.50292.98773.71983.04742.75253.81522.76222.15793.04932.16243.06592.48971.09871.7719

picture of Thiophene, tetrahydro-2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C9 S5 111.621 C1 C9 H10 109.200
C1 C9 C14 114.400 H2 C1 H3 108.548
H2 C1 H4 107.998 H2 C1 C9 110.853
H3 C1 H4 107.640 H3 C1 C9 110.144
H4 C1 C9 111.542 S5 C6 H7 109.460
S5 C6 H8 109.182 S5 C6 C11 106.131
S5 C9 H10 107.200 S5 C9 C14 104.985
C6 S5 C9 94.298 C6 C11 H12 109.683
C6 C11 H13 111.090 C6 C11 C14 106.485
H7 C6 H8 108.262 H7 C6 C11 112.552
H8 C6 C11 111.197 C9 C14 C11 107.138
C9 C14 H15 110.699 C9 C14 H16 109.241
H10 C9 C14 109.135 C11 C14 H15 112.310
C11 C14 H16 109.857 H12 C11 H13 107.564
H12 C11 C14 109.658 H13 C11 C14 112.356
H15 C14 H16 107.576
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.506     -0.515
2 H 0.182     0.126
3 H 0.169     0.116
4 H 0.182     0.175
5 S 0.081     -0.327
6 C -0.472     -0.052
7 H 0.199     0.107
8 H 0.196     0.101
9 C -0.282     0.265
10 H 0.191     0.037
11 C -0.323     -0.309
12 H 0.177     0.116
13 H 0.174     0.114
14 C -0.313     -0.098
15 H 0.172     0.060
16 H 0.173     0.086


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.378 2.137 0.007 2.170
CHELPG        
AIM        
ESP 0.380 2.136 -0.011 2.169


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.801 -0.332 0.983
y -0.332 -47.792 -0.350
z 0.983 -0.350 -45.488
Traceless
 xyz
x 4.839 -0.332 0.983
y -0.332 -4.148 -0.350
z 0.983 -0.350 -0.691
Polar
3z2-r2-1.382
x2-y25.991
xy-0.332
xz0.983
yz-0.350


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


<r2> (average value of r2) Å2
<r2> 203.887
(<r2>)1/2 14.279