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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-591.144361
Energy at 298.15K-591.150462
HF Energy-590.337530
Nuclear repulsion energy272.897305
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 MP2/6-31G**
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 3337 3125 1.21      
2 A 3301 3091 4.56      
3 A 3283 3075 6.48      
4 A 3227 3022 10.62      
5 A 3124 2926 26.16      
6 A 1606 1504 0.88      
7 A 1554 1455 4.13      
8 A 1513 1417 8.12      
9 A 1464 1371 0.67      
10 A 1423 1332 0.87      
11 A 1293 1211 12.61      
12 A 1229 1151 12.58      
13 A 1129 1057 2.37      
14 A 1098 1028 2.66      
15 A 1018 954 1.73      
16 A 892 835 12.56      
17 A 771 722 0.07      
18 A 693 649 2.02      
19 A 563 527 1.02      
20 A 308 289 0.66      
21 A 3208 3004 13.58      
22 A 1535 1437 6.57      
23 A 1085 1016 0.12      
24 A 846 792 0.03      
25 A 802 751 13.88      
26 A 691 647 60.06      
27 A 539 505 1.28      
28 A 465 435 4.51      
29 A 226 212 2.42      
30 A 76 72 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 21148.3 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 19805.4 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 MP2/6-31G**
ABC
0.17573 0.10405 0.06615

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.372 -1.572 0.000
C2 -1.431 -1.041 0.000
H3 -2.145 1.058 0.000
C4 -1.307 0.373 0.000
C5 0.000 0.808 0.000
H6 -0.006 -2.730 0.000
C7 -0.210 -1.672 0.000
S8 1.084 -0.540 0.000
H9 -0.346 2.901 0.000
H10 1.106 2.434 0.881
H11 1.106 2.434 -0.881
C12 0.502 2.218 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08032.63982.21773.36032.63412.16373.60624.91045.37785.37784.7566
C21.08032.21661.41962.33812.21051.37452.56414.08834.39184.39183.7892
H32.63982.21661.08142.15924.35033.34593.60232.57513.63843.63842.8898
C42.21771.41961.08141.37783.36572.32132.55972.70413.29353.29352.5840
C53.36032.33812.15921.37783.53872.48951.73002.12132.15482.15481.4968
H62.63412.21054.35033.36573.53871.07772.44635.64185.35585.35584.9748
C72.16371.37453.34592.32132.48951.07771.71934.57544.40134.40133.9554
S83.60622.56413.60232.55971.73002.44631.71933.72673.10223.10222.8194
H94.91044.08832.57512.70412.12135.64184.57543.72671.76201.76201.0889
H105.37784.39183.63843.29352.15485.35584.40133.10221.76201.76271.0901
H115.37784.39183.63843.29352.15485.35584.40133.10221.76201.76271.0901
C124.75663.78922.88982.58401.49684.97483.95542.81941.08891.09011.0901

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 124.467 H1 C2 C7 123.180
C2 C4 H3 124.257 C2 C4 C5 113.398
C2 C7 H6 128.290 C2 C7 S8 111.465
H3 C4 C5 122.345 C4 C2 C7 112.353
C4 C5 S8 110.390 C4 C5 C12 127.985
C5 S8 C7 92.394 C5 C12 H9 109.238
C5 C12 H10 111.850 C5 C12 H11 111.850
H6 C7 S8 120.245 S8 C5 C12 121.625
H9 C12 H10 107.926 H9 C12 H11 107.926
H10 C12 H11 107.897
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability