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/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-553.177168
Energy at 298.15K-553.183877
HF Energy-552.468623
Nuclear repulsion energy216.163459
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/6-31+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 A1 3283 3083 14.07      
2 A1 3130 2940 0.17      
3 A1 1708 1604 9.55      
4 A1 1535 1442 6.67      
5 A1 1343 1261 0.47      
6 A1 1164 1094 0.22      
7 A1 988 928 0.09      
8 A1 748 703 1.90      
9 A1 530 498 0.29      
10 A2 3182 2989 0.00      
11 A2 1158 1088 0.00      
12 A2 1005 944 0.00      
13 A2 940 883 0.00      
14 A2 360 338 0.00      
15 B1 3183 2990 9.34      
16 B1 1145 1075 15.07      
17 B1 943 885 0.85      
18 B1 682 640 56.39      
19 B1 38 35 5.25      
20 B2 3259 3061 2.52      
21 B2 3131 2940 53.87      
22 B2 1530 1437 0.00      
23 B2 1393 1308 2.82      
24 B2 1305 1225 8.60      
25 B2 1007 946 5.78      
26 B2 838 787 0.57      
27 B2 668 628 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20097.9 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 18876.0 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/6-31+G**
ABC
0.22166 0.15986 0.09621

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.245
C2 0.000 1.343 0.004
C3 0.000 -1.343 0.004
C4 0.000 0.669 -1.335
C5 0.000 -0.669 -1.335
H6 -0.883 1.970 0.131
H7 0.883 1.970 0.131
H8 0.883 -1.970 0.131
H9 -0.883 -1.970 0.131
H10 0.000 1.262 -2.240
H11 0.000 -1.262 -2.240

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82851.82852.66512.66512.42952.42952.42952.42953.70653.7065
C21.82852.68621.49892.41711.09021.09023.43143.43142.24563.4388
C31.82852.68622.41711.49893.43143.43141.09021.09023.43882.2456
C42.66511.49892.41711.33872.14942.14943.14573.14571.08222.1334
C52.66512.41711.49891.33873.14573.14572.14942.14942.13341.0822
H62.42951.09023.43142.14943.14571.76514.31813.94092.62714.1051
H72.42951.09023.43142.14943.14571.76513.94094.31812.62714.1051
H82.42953.43141.09023.14572.14944.31813.94091.76514.10512.6271
H92.42953.43141.09023.14572.14943.94094.31811.76514.10512.6271
H103.70652.24563.43881.08222.13342.62712.62714.10514.10512.5249
H113.70653.43882.24562.13341.08224.10514.10512.62712.62712.5249

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 106.018 S1 C2 H6 110.107
S1 C2 H7 110.107 S1 C3 C5 106.018
S1 C3 H8 110.107 S1 C3 H9 110.107
C2 S1 C3 94.539 C2 C4 C5 116.713
C2 C4 H10 120.053 C3 C5 C4 116.713
C3 C5 H11 120.053 C4 C2 H6 111.258
C4 C2 H7 111.258 C4 C5 H11 123.234
C5 C3 H8 111.258 C5 C3 H9 111.258
C5 C4 H10 123.234 H6 C2 H7 108.100
H8 C3 H9 108.100
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability