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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-554.039164
Energy at 298.15K-554.045783
Nuclear repulsion energy209.492669
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 BLYP/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 3127 3103 27.97      
2 A1 2990 2967 0.04      
3 A1 1660 1647 5.79      
4 A1 1484 1472 7.77      
5 A1 1257 1247 1.85      
6 A1 1146 1137 0.26      
7 A1 932 924 0.34      
8 A1 634 629 3.50      
9 A1 481 478 0.39      
10 A2 3031 3008 0.00      
11 A2 1118 1110 0.00      
12 A2 942 935 0.00      
13 A2 930 923 0.00      
14 A2 370 367 0.00      
15 B1 3033 3010 32.83      
16 B1 1113 1104 9.41      
17 B1 874 867 0.18      
18 B1 673 668 48.78      
19 B1 122 121 5.68      
20 B2 3100 3077 5.86      
21 B2 2989 2967 69.76      
22 B2 1482 1471 0.00      
23 B2 1357 1347 3.55      
24 B2 1221 1212 7.18      
25 B2 962 955 7.76      
26 B2 801 795 0.73      
27 B2 557 552 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 19192.5 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 19046.7 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 BLYP/6-31G
ABC
0.20912 0.14843 0.08980

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.312
C2 0.000 1.396 -0.037
C3 0.000 -1.396 -0.037
C4 0.000 0.674 -1.368
C5 0.000 -0.674 -1.368
H6 -0.895 2.022 0.111
H7 0.895 2.022 0.111
H8 0.895 -2.022 0.111
H9 -0.895 -2.022 0.111
H10 0.000 1.268 -2.287
H11 0.000 -1.268 -2.287

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.94111.94112.76292.76292.51652.51652.51652.51653.81593.8159
C21.94112.79161.51372.46051.10261.10263.53623.53622.25383.4868
C31.94112.79162.46051.51373.53623.53621.10261.10263.48682.2538
C42.76291.51372.46051.34802.19172.19173.20233.20231.09472.1485
C52.76292.46051.51371.34803.20233.20232.19172.19172.14851.0947
H62.51651.10263.53622.19173.20231.79094.42264.04382.66844.1681
H72.51651.10263.53622.19173.20231.79094.04384.42262.66844.1681
H82.51653.53621.10263.20232.19174.42264.04381.79094.16812.6684
H92.51653.53621.10263.20232.19174.04384.42261.79094.16812.6684
H103.81592.25383.48681.09472.14852.66842.66844.16814.16812.5355
H113.81593.48682.25382.14851.09474.16814.16812.66842.66842.5355

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 105.540 S1 C2 H6 108.375
S1 C2 H7 108.375 S1 C3 C5 105.540
S1 C3 H8 108.375 S1 C3 H9 108.375
C2 S1 C3 91.957 C2 C4 C5 118.482
C2 C4 H10 118.673 C3 C5 C4 118.482
C3 C5 H11 118.673 C4 C2 H6 112.864
C4 C2 H7 112.864 C4 C5 H11 122.845
C5 C3 H8 112.864 C5 C3 H9 112.864
C5 C4 H10 122.845 H6 C2 H7 108.613
H8 C3 H9 108.613
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.142      
2 C -0.477      
3 C -0.477      
4 C -0.039      
5 C -0.039      
6 H 0.165      
7 H 0.165      
8 H 0.165      
9 H 0.165      
10 H 0.115      
11 H 0.115      


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 -2.252 2.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.767 0.000 0.000
y 0.000 -32.424 0.000
z 0.000 0.000 -39.650
Traceless
 xyz
x -3.730 0.000 0.000
y 0.000 7.285 0.000
z 0.000 0.000 -3.555
Polar
3z2-r2-7.110
x2-y2-7.343
xy0.000
xz0.000
yz0.000


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> 135.395
(<r2>)1/2 11.636