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All results from a given calculation for C6H8 (1,4-Cyclohexadiene)

using model chemistry: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-231.744803
Energy at 298.15K-231.753893
Nuclear repulsion energy218.728337
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 HF/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 Ag 3354 3028 0.00      
2 Ag 3151 2845 0.00      
3 Ag 1914 1728 0.00      
4 Ag 1642 1483 0.00      
5 Ag 1356 1225 0.00      
6 Ag 912 824 0.00      
7 Ag 595 537 0.00      
8 Au 1356 1224 0.00      
9 Au 1149 1038 0.00      
10 Au 426 385 0.00      
11 B1g 3322 3000 0.00      
12 B1g 1544 1394 0.00      
13 B1g 1524 1376 0.00      
14 B1g 1149 1037 0.00      
15 B1g 637 575 0.00      
16 B1u 3166 2859 80.07      
17 B1u 1118 1010 38.73      
18 B1u 725 654 84.24      
19 B1u 130 117 0.75      
20 B2g 3167 2859 0.00      
21 B2g 1181 1067 0.00      
22 B2g 1079 975 0.00      
23 B2g 450 406 0.00      
24 B2u 3350 3024 104.91      
25 B2u 1873 1691 2.49      
26 B2u 1526 1378 1.51      
27 B2u 1313 1185 0.55      
28 B2u 1020 921 1.13      
29 B3g 1354 1223 0.00      
30 B3g 817 738 0.00      
31 B3u 3323 3000 24.57      
32 B3u 3152 2846 112.28      
33 B3u 1644 1485 3.42      
34 B3u 1586 1432 0.37      
35 B3u 1078 974 1.35      
36 B3u 954 862 9.96      

Unscaled Zero Point Vibrational Energy (zpe) 29018.9 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 26201.1 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 HF/6-31G
ABC
0.17275 0.16466 0.08693

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.497 0.000 0.000
C2 -1.497 0.000 0.000
C3 -0.662 1.252 0.000
C4 0.662 1.252 0.000
C5 -0.662 -1.252 0.000
C6 0.662 -1.252 0.000
H7 1.196 -2.186 0.000
H8 -1.196 -2.186 0.000
H9 1.196 2.186 0.000
H10 -1.196 2.186 0.000
H11 2.158 0.000 0.866
H12 -2.158 0.000 0.866
H13 2.158 0.000 -0.866
H14 -2.158 0.000 -0.866

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C12.99382.49591.50532.49591.50532.20673.46862.20673.46861.08943.75641.08943.7564
C22.99381.50532.49591.50532.49593.46862.20673.46862.20673.75641.08943.75641.0894
C32.49591.50531.32392.50492.83333.90843.47982.07941.07563.20512.13483.20512.1348
C41.50532.49591.32392.83332.50493.47983.90841.07562.07942.13483.20512.13483.2051
C52.49591.50532.50492.83331.32392.07941.07563.90843.47983.20512.13483.20512.1348
C61.50532.49592.83332.50491.32391.07562.07943.47983.90842.13483.20512.13483.2051
H72.20673.46863.90843.47982.07941.07562.39214.37224.98382.54064.09642.54064.0964
H83.46862.20673.47983.90841.07562.07942.39214.98384.37224.09642.54064.09642.5406
H92.20673.46862.07941.07563.90843.47984.37224.98382.39212.54064.09642.54064.0964
H103.46862.20671.07562.07943.47983.90844.98384.37222.39214.09642.54064.09642.5406
H111.08943.75643.20512.13483.20512.13482.54064.09642.54064.09644.31681.73124.6510
H123.75641.08942.13483.20512.13483.20514.09642.54064.09642.54064.31684.65101.7312
H131.08943.75643.20512.13483.20512.13482.54064.09642.54064.09641.73124.65104.3168
H143.75641.08942.13483.20512.13483.20514.09642.54064.09642.54064.65101.73124.3168

picture of 1,4-Cyclohexadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 C3 123.689 C1 C4 H9 116.540
C1 C6 C5 123.689 C1 C6 H7 116.540
C2 C3 C4 123.689 C2 C3 H10 116.540
C2 C5 C6 123.689 C2 C5 H8 116.540
C3 C2 C5 112.621 C3 C2 H12 109.683
C3 C2 H14 109.683 C3 C4 H9 119.770
C4 C1 C6 112.621 C4 C1 H11 109.683
C4 C1 H13 109.683 C4 C3 H10 119.770
C5 C2 H12 109.683 C5 C2 H14 109.683
C5 C6 H7 119.770 C6 C1 H11 109.683
C6 C1 H13 109.683 C6 C5 H8 119.770
H11 C1 H13 105.225 H12 C2 H14 105.225
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.383 0.500    
2 C -0.383 0.500    
3 C -0.153 -0.284    
4 C -0.153 -0.284    
5 C -0.153 -0.284    
6 C -0.153 -0.284    
7 H 0.171 0.119    
8 H 0.171 0.119    
9 H 0.171 0.119    
10 H 0.171 0.119    
11 H 0.173 -0.085    
12 H 0.173 -0.085    
13 H 0.173 -0.085    
14 H 0.173 -0.085    


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 0.000 0.000
CHELPG 0.000 0.000 0.000 0.000
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.764 0.000 0.000
y 0.000 -33.848 0.000
z 0.000 0.000 -39.905
Traceless
 xyz
x 1.113 0.000 0.000
y 0.000 3.987 0.000
z 0.000 0.000 -5.099
Polar
3z2-r2-10.199
x2-y2-1.916
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.797 0.000 0.000
y 0.000 11.826 0.000
z 0.000 0.000 4.699


<r2> (average value of r2) Å2
<r2> 144.322
(<r2>)1/2 12.013