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All results from a given calculation for C4H6S (Thiophene, 2,5-dihydro-)

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-553.371966
Energy at 298.15K-553.378725
HF Energy-552.543495
Nuclear repulsion energy216.688677
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/Def2TZVPP
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 3236 3079 11.14      
2 A1 3083 2934 0.26      
3 A1 1684 1602 6.81      
4 A1 1498 1425 5.31      
5 A1 1294 1232 0.03      
6 A1 1140 1085 0.65      
7 A1 976 929 0.12      
8 A1 741 705 1.64      
9 A1 517 492 0.09      
10 A2 3130 2978 0.00      
11 A2 1157 1101 0.00      
12 A2 975 928 0.00      
13 A2 952 906 0.00      
14 A2 376 358 0.00      
15 B1 3131 2979 9.65      
16 B1 1142 1087 12.51      
17 B1 912 867 1.09      
18 B1 687 653 45.20      
19 B1 74 70 3.62      
20 B2 3212 3056 1.64      
21 B2 3084 2935 50.58      
22 B2 1493 1421 0.12      
23 B2 1368 1301 3.26      
24 B2 1253 1193 6.21      
25 B2 990 942 7.08      
26 B2 829 789 0.61      
27 B2 663 631 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19798.7 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 18838.4 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/Def2TZVPP
ABC
0.22216 0.16111 0.09675

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.238
C2 0.000 1.345 0.005
C3 0.000 -1.345 0.005
C4 0.000 0.666 -1.330
C5 0.000 -0.666 -1.330
H6 -0.883 1.969 0.137
H7 0.883 1.969 0.137
H8 0.883 -1.969 0.137
H9 -0.883 -1.969 0.137
H10 0.000 1.260 -2.234
H11 0.000 -1.260 -2.234

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82461.82462.65332.65332.42292.42292.42292.42293.69453.6945
C21.82462.68951.49762.41391.08981.08983.43223.43222.24123.4356
C31.82462.68952.41391.49763.43223.43221.08981.08983.43562.2412
C42.65331.49762.41391.33262.15182.15183.14303.14301.08222.1285
C52.65332.41391.49761.33263.14303.14302.15182.15182.12851.0822
H62.42291.08983.43222.15183.14301.76674.31643.93832.62814.1031
H72.42291.08983.43222.15183.14301.76673.93834.31642.62814.1031
H82.42293.43221.08983.14302.15184.31643.93831.76674.10312.6281
H92.42293.43221.08983.14302.15183.93834.31641.76674.10312.6281
H103.69452.24123.43561.08222.12852.62812.62814.10314.10312.5210
H113.69453.43562.24122.12851.08224.10314.10312.62812.62812.5210

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 105.583 S1 C2 H6 109.904
S1 C2 H7 109.904 S1 C3 C5 105.583
S1 C3 H8 109.904 S1 C3 H9 109.904
C2 S1 C3 94.958 C2 C4 C5 116.938
C2 C4 H10 119.759 C3 C5 C4 116.938
C3 C5 H11 119.759 C4 C2 H6 111.564
C4 C2 H7 111.564 C4 C5 H11 123.302
C5 C3 H8 111.564 C5 C3 H9 111.564
C5 C4 H10 123.302 H6 C2 H7 108.306
H8 C3 H9 108.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability