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

using model chemistry: HF/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-37.460831
Energy at 298.15K-37.469882
Nuclear repulsion energy114.341499
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/CEP-121G
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 3323 3032 0.00      
2 Ag 3131 2857 0.00      
3 Ag 1862 1699 0.00      
4 Ag 1632 1489 0.00      
5 Ag 1326 1210 0.00      
6 Ag 897 818 0.00      
7 Ag 581 530 0.00      
8 Au 1327 1210 0.00      
9 Au 1115 1018 0.00      
10 Au 414 378 0.00      
11 B1g 3287 2999 0.00      
12 B1g 1531 1397 0.00      
13 B1g 1495 1364 0.00      
14 B1g 1136 1037 0.00      
15 B1g 619 565 0.00      
16 B1u 3158 2882 100.09      
17 B1u 1107 1010 47.74      
18 B1u 713 651 95.34      
19 B1u 130 119 1.27      
20 B2g 3158 2881 0.00      
21 B2g 1149 1049 0.00      
22 B2g 1065 971 0.00      
23 B2g 438 400 0.00      
24 B2u 3318 3028 128.62      
25 B2u 1818 1659 6.74      
26 B2u 1514 1381 0.75      
27 B2u 1284 1171 0.15      
28 B2u 1008 920 2.96      
29 B3g 1330 1213 0.00      
30 B3g 802 732 0.00      
31 B3u 3288 3000 31.01      
32 B3u 3131 2857 142.33      
33 B3u 1633 1491 6.33      
34 B3u 1556 1420 1.13      
35 B3u 1052 960 1.71      
36 B3u 947 864 11.10      

Unscaled Zero Point Vibrational Energy (zpe) 28636.6 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 26130.9 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/CEP-121G
ABC
0.17010 0.16188 0.08550

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.511 0.000 0.000
C2 -1.511 0.000 0.000
C3 -0.669 1.263 0.000
C4 0.669 1.263 0.000
C5 -0.669 -1.263 0.000
C6 0.669 -1.263 0.000
H7 1.202 -2.200 0.000
H8 -1.202 -2.200 0.000
H9 1.202 2.200 0.000
H10 -1.202 2.200 0.000
H11 2.171 0.000 0.868
H12 -2.171 0.000 0.868
H13 2.171 0.000 -0.868
H14 -2.171 0.000 -0.868

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.02182.51931.51782.51931.51782.22163.49302.22163.49301.09053.78271.09053.7827
C23.02181.51782.51931.51782.51933.49302.22163.49302.22163.78271.09053.78271.0905
C32.51931.51781.33812.52582.85833.93613.50372.09271.07823.22702.14573.22702.1457
C41.51782.51931.33812.85832.52583.50373.93611.07822.09272.14573.22702.14573.2270
C52.51931.51782.52582.85831.33812.09271.07823.93613.50373.22702.14573.22702.1457
C61.51782.51932.85832.52581.33811.07822.09273.50373.93612.14573.22702.14573.2270
H72.22163.49303.93613.50372.09271.07822.40434.40015.01412.55584.11962.55584.1196
H83.49302.22163.50373.93611.07822.09272.40435.01414.40014.11962.55584.11962.5558
H92.22163.49302.09271.07823.93613.50374.40015.01412.40432.55584.11962.55584.1196
H103.49302.22161.07822.09273.50373.93615.01414.40012.40434.11962.55584.11962.5558
H111.09053.78273.22702.14573.22702.14572.55584.11962.55584.11964.34181.73624.6760
H123.78271.09052.14573.22702.14573.22704.11962.55584.11962.55584.34184.67601.7362
H131.09053.78273.22702.14573.22702.14572.55584.11962.55584.11961.73624.67604.3418
H143.78271.09052.14573.22702.14573.22704.11962.55584.11962.55584.67601.73624.3418

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 123.688 C1 C4 H9 116.677
C1 C6 C5 123.688 C1 C6 H7 116.677
C2 C3 C4 123.688 C2 C3 H10 116.677
C2 C5 C6 123.688 C2 C5 H8 116.677
C3 C2 C5 112.624 C3 C2 H12 109.615
C3 C2 H14 109.615 C3 C4 H9 119.635
C4 C1 C6 112.624 C4 C1 H11 109.615
C4 C1 H13 109.615 C4 C3 H10 119.635
C5 C2 H12 109.615 C5 C2 H14 109.615
C5 C6 H7 119.635 C6 C1 H11 109.615
C6 C1 H13 109.615 C6 C5 H8 119.635
H11 C1 H13 105.511 H12 C2 H14 105.511
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.456      
2 C -0.456      
3 C -0.073      
4 C -0.073      
5 C -0.073      
6 C -0.073      
7 H 0.153      
8 H 0.153      
9 H 0.153      
10 H 0.153      
11 H 0.148      
12 H 0.148      
13 H 0.148      
14 H 0.148      


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        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.263 0.000 0.000
y 0.000 -33.779 0.000
z 0.000 0.000 -40.449
Traceless
 xyz
x 0.851 0.000 0.000
y 0.000 4.577 0.000
z 0.000 0.000 -5.428
Polar
3z2-r2-10.855
x2-y2-2.484
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.302 0.000 0.000
y 0.000 12.654 0.000
z 0.000 0.000 5.795


<r2> (average value of r2) Å2
<r2> 120.956
(<r2>)1/2 10.998