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

using model chemistry: CCD/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 CCD/6-31G
 hartrees
Energy at 0K-552.818735
Energy at 298.15K-552.825513
HF Energy-552.359027
Nuclear repulsion energy210.135788
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 CCD/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 3187 3058 21.57      
2 A1 3070 2946 0.00      
3 A1 1711 1642 3.62      
4 A1 1546 1483 6.69      
5 A1 1322 1269 0.11      
6 A1 1191 1143 0.54      
7 A1 961 922 0.30      
8 A1 676 649 2.08      
9 A1 503 483 0.01      
10 A2 3119 2993 0.00      
11 A2 1170 1123 0.00      
12 A2 994 953 0.00      
13 A2 951 913 0.00      
14 A2 384 368 0.00      
15 B1 3121 2994 24.54      
16 B1 1161 1114 10.80      
17 B1 936 898 0.24      
18 B1 700 671 50.22      
19 B1 109 105 5.13      
20 B2 3159 3031 4.88      
21 B2 3069 2945 50.80      
22 B2 1544 1481 0.10      
23 B2 1408 1351 5.99      
24 B2 1297 1244 8.30      
25 B2 999 959 4.27      
26 B2 827 793 0.99      
27 B2 605 581 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 19859.4 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 19055.1 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 CCD/6-31G
ABC
0.21018 0.14961 0.09043

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.302
C2 0.000 1.391 -0.027
C3 0.000 -1.391 -0.027
C4 0.000 0.675 -1.367
C5 0.000 -0.675 -1.367
H6 -0.896 2.012 0.115
H7 0.896 2.012 0.115
H8 0.896 -2.012 0.115
H9 -0.896 -2.012 0.115
H10 0.000 1.273 -2.282
H11 0.000 -1.273 -2.282

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.92411.92412.75322.75322.50162.50162.50162.50163.80333.8033
C21.92412.78291.52002.46271.09911.09913.52203.52202.25803.4907
C31.92412.78292.46271.52003.52203.52201.09911.09913.49072.2580
C42.75321.52002.46271.34922.18842.18843.19653.19651.09312.1518
C52.75322.46271.52001.34923.19653.19652.18842.18842.15181.0931
H62.50161.09913.52202.18843.19651.79244.40464.02342.66374.1641
H72.50161.09913.52202.18843.19651.79244.02344.40462.66374.1641
H82.50163.52201.09913.19652.18844.40464.02341.79244.16412.6637
H92.50163.52201.09913.19652.18844.02344.40461.79244.16412.6637
H103.80332.25803.49071.09312.15182.66372.66374.16414.16412.5464
H113.80333.49072.25802.15181.09314.16414.16412.66372.66372.5464

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 105.544 S1 C2 H6 108.583
S1 C2 H7 108.583 S1 C3 C5 105.544
S1 C3 H8 108.583 S1 C3 H9 108.583
C2 S1 C3 92.633 C2 C4 C5 118.139
C2 C4 H10 118.656 C3 C5 C4 118.139
C3 C5 H11 118.656 C4 C2 H6 112.350
C4 C2 H7 112.350 C4 C5 H11 123.205
C5 C3 H8 112.350 C5 C3 H9 112.350
C5 C4 H10 123.205 H6 C2 H7 109.246
H8 C3 H9 109.246
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability