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

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-553.020553
Energy at 298.15K-553.027503
HF Energy-552.455586
Nuclear repulsion energy216.612592
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 CID/6-31G*
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 3325 3072 16.23      
2 A1 3180 2937 0.23      
3 A1 1823 1684 5.27      
4 A1 1593 1472 5.80      
5 A1 1395 1288 0.13      
6 A1 1211 1119 0.53      
7 A1 1013 936 0.12      
8 A1 774 715 2.46      
9 A1 548 506 0.14      
10 A2 3221 2976 0.00      
11 A2 1227 1134 0.00      
12 A2 1044 964 0.00      
13 A2 1003 927 0.00      
14 A2 392 362 0.00      
15 B1 3223 2977 21.55      
16 B1 1211 1118 11.44      
17 B1 982 907 1.06      
18 B1 726 670 45.95      
19 B1 91 84 4.70      
20 B2 3301 3049 3.20      
21 B2 3179 2937 62.56      
22 B2 1590 1468 0.12      
23 B2 1447 1337 2.55      
24 B2 1357 1253 7.70      
25 B2 1034 955 6.17      
26 B2 874 807 0.87      
27 B2 695 642 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 20728.4 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 19146.8 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 CID/6-31G*
ABC
0.22290 0.16032 0.09659

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.243
C2 0.000 1.341 0.004
C3 0.000 -1.341 0.004
C4 0.000 0.661 -1.333
C5 0.000 -0.661 -1.333
H6 -0.880 1.970 0.133
H7 0.880 1.970 0.133
H8 0.880 -1.970 0.133
H9 -0.880 -1.970 0.133
H10 0.000 1.258 -2.235
H11 0.000 -1.258 -2.235

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82591.82592.65982.65982.42622.42622.42622.42623.69873.6987
C21.82592.68251.50022.40821.08911.08913.42853.42852.24103.4307
C31.82592.68252.40821.50023.42853.42851.08911.08913.43072.2410
C42.65981.50022.40821.32302.15332.15333.13833.13831.08132.1206
C52.65982.40821.50021.32303.13833.13832.15332.15332.12061.0813
H62.42621.08913.42852.15333.13831.76004.31503.93972.62524.0989
H72.42621.08913.42852.15333.13831.76003.93974.31502.62524.0989
H82.42623.42851.08913.13832.15334.31503.93971.76004.09892.6252
H92.42623.42851.08913.13832.15333.93974.31501.76004.09892.6252
H103.69872.24103.43071.08132.12062.62522.62524.09894.09892.5153
H113.69873.43072.24102.12061.08134.09894.09892.62522.62522.5153

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 105.784 S1 C2 H6 110.094
S1 C2 H7 110.094 S1 C3 C5 105.784
S1 C3 H8 110.094 S1 C3 H9 110.094
C2 S1 C3 94.544 C2 C4 C5 116.943
C2 C4 H10 119.596 C3 C5 C4 116.943
C3 C5 H11 119.596 C4 C2 H6 111.541
C4 C2 H7 111.541 C4 C5 H11 123.460
C5 C3 H8 111.541 C5 C3 H9 111.541
C5 C4 H10 123.460 H6 C2 H7 107.798
H8 C3 H9 107.798
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability