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 (Dihydro-2-(3H)-thiophenone)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-628.388000
Energy at 298.15K-628.395678
HF Energy-627.379535
Nuclear repulsion energy292.349970
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(2df,p)
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 3203 3025 4.16      
2 A 3193 3016 2.83      
3 A 3181 3005 6.36      
4 A 3129 2955 11.68      
5 A 3121 2948 13.58      
6 A 3105 2932 2.97      
7 A 1797 1697 268.53      
8 A 1517 1433 0.18      
9 A 1504 1421 5.97      
10 A 1477 1395 7.00      
11 A 1367 1291 0.48      
12 A 1325 1252 9.15      
13 A 1311 1239 2.38      
14 A 1263 1193 2.42      
15 A 1194 1127 1.70      
16 A 1125 1063 12.77      
17 A 1087 1027 52.68      
18 A 1045 987 24.99      
19 A 1040 983 23.79      
20 A 943 891 8.51      
21 A 879 830 10.94      
22 A 847 800 12.51      
23 A 726 686 1.73      
24 A 636 601 44.50      
25 A 607 573 9.36      
26 A 483 456 1.25      
27 A 472 446 1.25      
28 A 406 383 3.18      
29 A 246 232 1.24      
30 A 126 119 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 21177.0 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 20001.7 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(2df,p)
ABC
0.14867 0.10492 0.06517

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.117 1.412 0.211
H2 -0.591 2.260 -0.283
H3 -0.086 1.618 1.287
C4 1.267 1.063 -0.313
H5 2.030 1.765 0.027
H6 1.260 1.064 -1.405
C7 1.568 -0.353 0.188
H8 1.838 -0.352 1.246
H9 2.364 -0.836 -0.377
C10 -0.998 0.183 0.023
O11 -2.199 0.165 -0.067
S12 0.029 -1.291 -0.039

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 H6 C7 H8 H9 C10 O11 S12
C11.09021.09581.52012.18372.15122.43982.82893.39931.52362.44252.7184
H21.09021.76972.21032.68492.47253.42193.88064.28122.13872.65003.6134
H31.09581.76972.16682.46683.05972.79742.75363.84612.11872.89983.1989
C41.52012.21032.16681.09161.09251.53142.18062.19412.45283.58862.6738
H52.18372.68492.46681.09161.77042.17442.45062.65413.41674.52263.6543
H62.15122.47253.05971.09251.77042.15443.06042.42682.81323.81622.9888
C72.43983.42192.79741.53142.17442.15441.09171.08952.62643.81061.8166
H82.82893.88062.75362.18062.45063.06041.09171.77323.13464.27642.4095
H93.39934.28123.84612.19412.65412.42681.08951.77323.53614.68202.4033
C101.52362.13872.11872.45283.41672.81322.62643.13463.53611.20431.7977
O112.44252.65002.89983.58864.52263.81623.81064.27644.68201.20432.6616
S122.71843.61343.19892.67383.65432.98881.81662.40952.40331.79772.6616

picture of Dihydro-2-(3H)-thiophenone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H5 112.426 C1 C4 H6 109.768
C1 C4 C7 106.174 C1 C10 O11 126.716
C1 C10 S12 109.587 H2 C1 H3 108.107
H2 C1 C4 114.727 H2 C1 C10 108.684
H3 C1 C4 110.811 H3 C1 C10 106.827
C4 C1 C10 107.383 C4 C7 H8 111.361
C4 C7 H9 112.593 C4 C7 S12 105.681
H5 C4 H6 108.310 H5 C4 C7 110.876
H6 C4 C7 109.247 C7 S12 C10 93.213
H8 C7 H9 108.766 H8 C7 S12 109.347
H9 C7 S12 109.002 O11 C10 S12 123.696
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability