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 C4H6S (Thiophene, 2,5-dihydro-)

using model chemistry: MP2=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-553.367033
Energy at 298.15K-553.373753
HF Energy-552.504315
Nuclear repulsion energy216.099389
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=FULL/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3233 3062 14.78      
2 A1 3090 2927 0.34      
3 A1 1696 1606 5.23      
4 A1 1527 1446 7.54      
5 A1 1334 1264 0.00      
6 A1 1155 1094 0.18      
7 A1 985 933 0.17      
8 A1 748 708 2.15      
9 A1 528 500 0.25      
10 A2 3140 2974 0.00      
11 A2 1180 1117 0.00      
12 A2 998 945 0.00      
13 A2 924 875 0.00      
14 A2 361 342 0.00      
15 B1 3141 2975 16.99      
16 B1 1163 1101 16.62      
17 B1 935 886 0.05      
18 B1 674 639 61.23      
19 B1 49 46 4.93      
20 B2 3209 3040 2.49      
21 B2 3091 2927 56.89      
22 B2 1522 1441 0.25      
23 B2 1377 1304 3.50      
24 B2 1299 1231 10.48      
25 B2 1002 949 6.02      
26 B2 837 792 0.49      
27 B2 667 632 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19931.2 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 18876.8 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 MP2=FULL/6-311G*
ABC
0.22165 0.15979 0.09621

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.244
C2 0.000 1.343 0.005
C3 0.000 -1.343 0.005
C4 0.000 0.669 -1.335
C5 0.000 -0.669 -1.335
H6 -0.886 1.971 0.133
H7 0.886 1.971 0.133
H8 0.886 -1.971 0.133
H9 -0.886 -1.971 0.133
H10 0.000 1.264 -2.244
H11 0.000 -1.264 -2.244

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82721.82722.66462.66462.42982.42982.42982.42983.71053.7105
C21.82722.68581.50042.41721.09361.09363.43253.43252.25093.4434
C31.82722.68582.41721.50043.43253.43251.09361.09363.44342.2509
C42.66461.50042.41721.33722.15332.15333.14763.14761.08682.1358
C52.66462.41721.50041.33723.14763.14762.15332.15332.13581.0868
H62.42981.09363.43252.15333.14761.77244.32173.94152.63384.1112
H72.42981.09363.43252.15333.14761.77243.94154.32172.63384.1112
H82.42983.43251.09363.14762.15334.32173.94151.77244.11122.6338
H92.42983.43251.09363.14762.15333.94154.32171.77244.11122.6338
H103.71052.25093.44341.08682.13582.63382.63384.11124.11122.5281
H113.71053.44342.25092.13581.08684.11124.11122.63382.63382.5281

picture of Thiophene, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 105.990 S1 C2 H6 110.039
S1 C2 H7 110.039 S1 C3 C5 105.990
S1 C3 H8 110.039 S1 C3 H9 110.039
C2 S1 C3 94.608 C2 C4 C5 116.706
C2 C4 H10 120.071 C3 C5 C4 116.706
C3 C5 H11 120.071 C4 C2 H6 111.253
C4 C2 H7 111.253 C4 C5 H11 123.223
C5 C3 H8 111.253 C5 C3 H9 111.253
C5 C4 H10 123.223 H6 C2 H7 108.265
H8 C3 H9 108.265
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability