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 C4H6OS (4,5-dihydrothiophene-3-ol)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-628.238513
Energy at 298.15K-628.245820
HF Energy-627.371137
Nuclear repulsion energy289.364214
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 MP2/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3844 3653 57.20      
2 A 3263 3101 5.39      
3 A 3182 3024 9.42      
4 A 3113 2958 31.96      
5 A 3098 2944 10.37      
6 A 3050 2898 36.95      
7 A 1708 1623 26.43      
8 A 1516 1441 4.43      
9 A 1500 1426 5.06      
10 A 1397 1327 150.32      
11 A 1354 1287 11.96      
12 A 1323 1257 59.72      
13 A 1265 1202 0.13      
14 A 1214 1154 17.68      
15 A 1183 1124 41.50      
16 A 1169 1111 40.31      
17 A 1036 985 5.38      
18 A 1023 972 1.13      
19 A 937 890 19.68      
20 A 848 806 31.66      
21 A 834 792 0.50      
22 A 762 724 36.21      
23 A 710 675 2.55      
24 A 548 521 3.62      
25 A 511 485 3.27      
26 A 453 430 16.93      
27 A 378 359 7.25      
28 A 283 269 120.15      
29 A 249 236 10.96      
30 A 192 183 6.65      

Unscaled Zero Point Vibrational Energy (zpe) 20969.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 19927.4 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 MP2/6-311G*
ABC
0.20323 0.07906 0.05923

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -1.558 -0.536 -0.096
C2 0.101 -1.116 0.099
C3 1.030 -0.150 0.028
C4 0.482 1.230 -0.219
C5 -0.972 1.170 0.253
O6 2.376 -0.394 0.004
H7 0.298 -2.176 0.198
H8 1.038 1.996 0.335
H9 -1.616 1.877 -0.269
H10 0.554 1.471 -1.288
H11 -1.033 1.340 1.330
H12 2.837 0.417 0.234

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12
S11.76782.61902.70031.83673.93702.49423.65202.42003.14782.41414.5087
C21.76781.34212.39802.52972.38861.08293.25933.47042.97052.97223.1394
C32.61901.34211.50542.40831.36792.16092.16863.34662.14182.85871.9052
C42.70032.39801.50541.52932.50483.43651.09732.19591.09892.16902.5321
C51.83672.52972.40831.52933.70313.57922.17521.09032.18961.09233.8822
O63.93702.38861.36792.50483.70312.74412.75904.60082.90994.04760.9614
H72.49421.08292.16093.43653.57922.74414.24004.50703.94703.92643.6296
H83.65203.25932.16861.09732.17522.75904.24002.72511.77372.38972.3952
H92.42003.47043.34662.19591.09034.60084.50702.72512.43141.78544.7130
H103.14782.97052.14181.09892.18962.90993.94701.77372.43143.06452.9392
H112.41412.97222.85872.16901.09234.04763.92642.38971.78543.06454.1263
H124.50873.13941.90522.53213.88220.96143.62962.39524.71302.93924.1263

picture of 4,5-dihydrothiophene-3-ol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 114.037 S1 C2 H7 120.158
S1 C5 C4 106.331 S1 C5 H9 108.853
S1 C5 H11 108.323 C2 S1 C5 89.124
C2 C3 C4 114.611 C2 C3 O6 123.623
C3 C2 H7 125.684 C3 C4 C5 105.040
C3 C4 H8 111.905 C3 C4 H10 109.668
C3 O6 H12 108.501 C4 C3 C5 37.826
C4 C5 H9 112.845 C4 C5 H11 110.548
C5 C4 H8 110.742 C5 C4 H10 111.797
H8 C4 H10 107.732 H9 C5 H11 109.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability