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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-549.068279
Energy at 298.15K-549.072690
HF Energy-548.588450
Nuclear repulsion energy200.926917
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 MP2/3-21G*
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 3289 3129 2.50      
2 A1 3253 3095 1.21      
3 A1 1423 1353 2.33      
4 A1 1394 1326 9.90      
5 A1 1160 1104 6.77      
6 A1 1047 996 1.35      
7 A1 849 808 28.61      
8 A1 640 608 0.85      
9 A2 866 824 0.00      
10 A2 700 666 0.00      
11 A2 584 555 0.00      
12 B1 872 829 2.51      
13 B1 732 697 149.76      
14 B1 467 444 1.05      
15 B2 3283 3124 0.06      
16 B2 3239 3081 2.56      
17 B2 1515 1441 0.67      
18 B2 1331 1266 9.83      
19 B2 1152 1096 5.96      
20 B2 912 868 0.04      
21 B2 759 723 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14733.2 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 14015.7 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 MP2/3-21G*
ABC
0.26428 0.17688 0.10596

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.203
C2 0.000 1.245 -0.005
C3 0.000 -1.245 -0.005
C4 0.000 0.720 -1.283
C5 0.000 -0.720 -1.283
H6 0.000 2.287 0.284
H7 0.000 -2.287 0.284
H8 0.000 1.331 -2.178
H9 0.000 -1.331 -2.178

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.73441.73442.58792.58792.46462.46463.63303.6330
C21.73442.49071.38212.34491.08073.54402.17513.3704
C31.73442.49072.34491.38213.54401.08073.37042.1751
C42.58791.38212.34491.44092.21563.39101.08322.2379
C52.58792.34491.38211.44093.39102.21562.23791.0832
H62.46461.08073.54402.21563.39104.57382.64094.3758
H72.46463.54401.08073.39102.21564.57384.37582.6409
H83.63302.17513.37041.08322.23792.64094.37582.6615
H93.63303.37042.17512.23791.08324.37582.64092.6615

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.786 S1 C2 H6 120.420
S1 C3 C5 111.786 S1 C3 H7 120.420
C2 S1 C3 91.785 C2 C4 C5 112.321
C2 C4 H8 123.385 C3 C5 C4 112.321
C3 C5 H9 123.385 C4 C2 H6 127.794
C4 C5 H9 124.294 C5 C3 H7 127.794
C5 C4 H8 124.294
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability