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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G4
 hartrees
Energy at 0K-553.968719
Energy at 298.15K-553.962856
HF Energy-554.221806
Nuclear repulsion energy215.328194
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 B3LYP/6-31G(2df,p)
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 3193 3082 18.46      
2 A1 3033 2927 0.17      
3 A1 1713 1654 6.75      
4 A1 1485 1433 5.20      
5 A1 1288 1243 1.26      
6 A1 1140 1100 0.46      
7 A1 959 926 0.02      
8 A1 709 684 2.62      
9 A1 512 494 0.01      
10 A2 3065 2958 0.00      
11 A2 1142 1102 0.00      
12 A2 973 939 0.00      
13 A2 953 919 0.00      
14 A2 384 371 0.00      
15 B1 3067 2960 20.17      
16 B1 1129 1089 9.59      
17 B1 903 872 0.24      
18 B1 687 663 33.33      
19 B1 108 104 3.92      
20 B2 3169 3058 3.56      
21 B2 3034 2927 66.74      
22 B2 1482 1430 0.60      
23 B2 1360 1313 2.59      
24 B2 1245 1201 7.15      
25 B2 972 938 7.65      
26 B2 822 793 0.59      
27 B2 637 614 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 19581.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 18896.5 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 B3LYP/6-31G(2df,p)
ABC
0.21982 0.15867 0.09544

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.252
C2 0.000 1.352 -0.003
C3 0.000 -1.352 -0.003
C4 0.000 0.664 -1.337
C5 0.000 -0.664 -1.337
H6 -0.883 1.985 0.134
H7 0.883 1.985 0.134
H8 0.883 -1.985 0.134
H9 -0.883 -1.985 0.134
H10 0.000 1.262 -2.244
H11 0.000 -1.262 -2.244

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.84431.84432.67332.67332.44372.44372.44372.44373.71663.7166
C21.84432.70371.50162.41781.09561.09563.45473.45472.24293.4432
C31.84432.70372.41781.50163.45473.45471.09561.09563.44322.2429
C42.67331.50162.41781.32822.16582.16583.15663.15661.08582.1288
C52.67332.41781.50161.32823.15663.15662.16582.16582.12881.0858
H62.44371.09563.45472.16583.15661.76704.34593.97042.63754.1206
H72.44371.09563.45472.16583.15661.76703.97044.34592.63754.1206
H82.44373.45471.09563.15662.16584.34593.97041.76704.12062.6375
H92.44373.45471.09563.15662.16583.97044.34591.76704.12062.6375
H103.71662.24293.44321.08582.12882.63752.63754.12064.12062.5243
H113.71663.44322.24292.12881.08584.12064.12062.63752.63752.5243

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 105.499 S1 C2 H6 109.999
S1 C2 H7 109.999 S1 C3 C5 105.499
S1 C3 H8 109.999 S1 C3 H9 109.999
C2 S1 C3 94.562 C2 C4 C5 117.220
C2 C4 H10 119.243 C3 C5 C4 117.220
C3 C5 H11 119.243 C4 C2 H6 111.865
C4 C2 H7 111.865 C4 C5 H11 123.537
C5 C3 H8 111.865 C5 C3 H9 111.865
C5 C4 H10 123.537 H6 C2 H7 107.622
H8 C3 H9 107.622
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.154      
2 C -0.244      
3 C -0.244      
4 C -0.052      
5 C -0.052      
6 H 0.135      
7 H 0.135      
8 H 0.135      
9 H 0.135      
10 H 0.104      
11 H 0.104      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.928 1.928
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 128.975
(<r2>)1/2 11.357