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

using model chemistry: MP2/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-553.374229
Energy at 298.15K-553.381012
HF Energy-552.544445
Nuclear repulsion energy216.449570
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/cc-pVTZ
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 3234 3071 11.66      
2 A1 3082 2926 0.32      
3 A1 1687 1601 6.16      
4 A1 1498 1423 5.15      
5 A1 1294 1228 0.05      
6 A1 1139 1081 0.60      
7 A1 977 928 0.15      
8 A1 740 702 1.73      
9 A1 515 489 0.06      
10 A2 3129 2971 0.00      
11 A2 1159 1100 0.00      
12 A2 975 926 0.00      
13 A2 953 905 0.00      
14 A2 376 357 0.00      
15 B1 3130 2972 11.02      
16 B1 1144 1086 11.32      
17 B1 911 865 1.10      
18 B1 687 652 44.26      
19 B1 79 75 3.68      
20 B2 3209 3047 1.65      
21 B2 3083 2927 50.75      
22 B2 1494 1419 0.06      
23 B2 1369 1300 3.22      
24 B2 1253 1190 5.80      
25 B2 992 942 7.19      
26 B2 830 789 0.69      
27 B2 663 629 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19798.6 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 18798.8 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/cc-pVTZ
ABC
0.22173 0.16067 0.09651

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.241
C2 0.000 1.346 0.004
C3 0.000 -1.346 0.004
C4 0.000 0.666 -1.331
C5 0.000 -0.666 -1.331
H6 -0.883 1.971 0.136
H7 0.883 1.971 0.136
H8 0.883 -1.971 0.136
H9 -0.883 -1.971 0.136
H10 0.000 1.260 -2.236
H11 0.000 -1.260 -2.236

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82821.82822.65642.65642.42612.42612.42612.42613.69753.6975
C21.82822.69241.49782.41471.08991.08993.43533.43532.24103.4360
C31.82822.69242.41471.49783.43533.43531.08991.08993.43602.2410
C42.65641.49782.41471.33242.15252.15253.14413.14411.08222.1280
C52.65642.41471.49781.33243.14413.14412.15252.15252.12801.0822
H62.42611.08993.43532.15253.14411.76654.31973.94202.62854.1039
H72.42611.08993.43532.15253.14411.76653.94204.31972.62854.1039
H82.42613.43531.08993.14412.15254.31973.94201.76654.10392.6285
H92.42613.43531.08993.14412.15253.94204.31971.76654.10392.6285
H103.69752.24103.43601.08222.12802.62852.62854.10394.10392.5198
H113.69753.43602.24102.12801.08224.10394.10392.62852.62852.5198

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 105.577 S1 C2 H6 109.888
S1 C2 H7 109.888 S1 C3 C5 105.577
S1 C3 H8 109.888 S1 C3 H9 109.888
C2 S1 C3 94.844 C2 C4 C5 117.001
C2 C4 H10 119.729 C3 C5 C4 117.001
C3 C5 H11 119.729 C4 C2 H6 111.601
C4 C2 H7 111.601 C4 C5 H11 123.270
C5 C3 H8 111.601 C5 C3 H9 111.601
C5 C4 H10 123.270 H6 C2 H7 108.267
H8 C3 H9 108.267
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability