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

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-554.216408
Energy at 298.15K-554.223171
Nuclear repulsion energy216.632156
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 B1B95/6-311G**
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 3205 3077 17.05      
2 A1 3051 2930 0.45      
3 A1 1725 1656 7.98      
4 A1 1482 1423 7.85      
5 A1 1295 1244 0.37      
6 A1 1138 1093 0.27      
7 A1 975 936 0.06      
8 A1 725 696 2.90      
9 A1 516 495 0.02      
10 A2 3089 2966 0.00      
11 A2 1151 1105 0.00      
12 A2 977 938 0.00      
13 A2 951 913 0.00      
14 A2 375 360 0.00      
15 B1 3091 2967 22.47      
16 B1 1135 1090 15.52      
17 B1 906 869 0.00      
18 B1 684 656 54.60      
19 B1 84 81 4.93      
20 B2 3181 3054 3.47      
21 B2 3052 2930 69.25      
22 B2 1476 1417 0.20      
23 B2 1360 1306 2.13      
24 B2 1256 1206 9.63      
25 B2 983 944 9.00      
26 B2 822 789 0.58      
27 B2 649 623 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 19667.4 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 18882.7 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 B1B95/6-311G**
ABC
0.22265 0.16064 0.09668

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.243
C2 0.000 1.342 0.000
C3 0.000 -1.342 0.000
C4 0.000 0.662 -1.329
C5 0.000 -0.662 -1.329
H6 -0.884 1.970 0.132
H7 0.884 1.970 0.132
H8 0.884 -1.970 0.132
H9 -0.884 -1.970 0.132
H10 0.000 1.256 -2.236
H11 0.000 -1.256 -2.236

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82911.82912.65632.65632.42852.42852.42852.42853.69903.6990
C21.82912.68351.49292.40491.09241.09243.43053.43052.23783.4276
C31.82912.68352.40491.49293.43053.43051.09241.09243.42762.2378
C42.65631.49292.40491.32472.15102.15103.13803.13801.08392.1219
C52.65632.40491.49291.32473.13803.13802.15102.15102.12191.0839
H62.42851.09243.43052.15103.13801.76724.31883.94072.62664.0985
H72.42851.09243.43052.15103.13801.76723.94074.31882.62664.0985
H82.42853.43051.09243.13802.15104.31883.94071.76724.09852.6266
H92.42853.43051.09243.13802.15103.94074.31881.76724.09852.6266
H103.69902.23783.42761.08392.12192.62662.62664.09854.09852.5119
H113.69903.42762.23782.12191.08394.09854.09852.62662.62662.5119

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 105.744 S1 C2 H6 109.878
S1 C2 H7 109.878 S1 C3 C5 105.744
S1 C3 H8 109.878 S1 C3 H9 109.878
C2 S1 C3 94.369 C2 C4 C5 117.071
C2 C4 H10 119.720 C3 C5 C4 117.071
C3 C5 H11 119.720 C4 C2 H6 111.681
C4 C2 H7 111.681 C4 C5 H11 123.209
C5 C3 H8 111.681 C5 C3 H9 111.681
C5 C4 H10 123.209 H6 C2 H7 107.973
H8 C3 H9 107.973
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.058      
2 C -0.376      
3 C -0.376      
4 C -0.121      
5 C -0.121      
6 H 0.173      
7 H 0.173      
8 H 0.173      
9 H 0.173      
10 H 0.121      
11 H 0.121      


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 -1.939 1.939
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.903 0.000 0.000
y 0.000 -32.656 0.000
z 0.000 0.000 -39.209
Traceless
 xyz
x -3.971 0.000 0.000
y 0.000 6.900 0.000
z 0.000 0.000 -2.929
Polar
3z2-r2-5.858
x2-y2-7.247
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.407 0.000 0.000
y 0.000 10.462 0.000
z 0.000 0.000 9.194


<r2> (average value of r2) Å2
<r2> 127.945
(<r2>)1/2 11.311