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

using model chemistry: HF/CEP-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/CEP-31G
 hartrees
Energy at 0K-37.444106
Energy at 298.15K-37.453085
Nuclear repulsion energy113.848605
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-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 3377 3044 0.00      
2 Ag 3190 2876 0.00      
3 Ag 1886 1700 0.00      
4 Ag 1630 1469 0.00      
5 Ag 1330 1199 0.00      
6 Ag 904 815 0.00      
7 Ag 575 518 0.00      
8 Au 1324 1194 0.00      
9 Au 1124 1013 0.00      
10 Au 403 363 0.00      
11 B1g 3332 3003 0.00      
12 B1g 1543 1391 0.00      
13 B1g 1497 1349 0.00      
14 B1g 1146 1033 0.00      
15 B1g 608 548 0.00      
16 B1u 3220 2903 136.35      
17 B1u 1105 996 51.54      
18 B1u 724 653 108.87      
19 B1u 132 119 1.52      
20 B2g 3219 2902 0.00      
21 B2g 1143 1031 0.00      
22 B2g 1060 956 0.00      
23 B2g 420 379 0.00      
24 B2u 3371 3039 167.26      
25 B2u 1845 1663 6.21      
26 B2u 1523 1372 0.83      
27 B2u 1285 1158 0.29      
28 B2u 1020 919 2.79      
29 B3g 1332 1200 0.00      
30 B3g 814 734 0.00      
31 B3u 3332 3004 43.45      
32 B3u 3190 2875 168.50      
33 B3u 1631 1470 6.82      
34 B3u 1561 1407 2.02      
35 B3u 1037 935 2.38      
36 B3u 956 862 10.87      

Unscaled Zero Point Vibrational Energy (zpe) 28894.2 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 26045.2 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-31G
ABC
0.16910 0.15994 0.08472

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.519 0.000 0.000
C2 -1.519 0.000 0.000
C3 -0.676 1.267 0.000
C4 0.676 1.267 0.000
C5 -0.676 -1.267 0.000
C6 0.676 -1.267 0.000
H7 1.209 -2.207 0.000
H8 -1.209 -2.207 0.000
H9 1.209 2.207 0.000
H10 -1.209 2.207 0.000
H11 2.180 0.000 0.871
H12 -2.180 0.000 0.871
H13 2.180 0.000 -0.871
H14 -2.180 0.000 -0.871

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.03832.53401.52172.53401.52172.22853.50862.22853.50861.09323.80031.09323.8003
C23.03831.52172.53401.52172.53403.50862.22853.50862.22853.80031.09323.80031.0932
C32.53401.52171.35122.53312.87093.95153.51402.10581.08083.24302.15083.24302.1508
C41.52172.53401.35122.87092.53313.51403.95151.08082.10582.15083.24302.15083.2430
C52.53401.52172.53312.87091.35122.10581.08083.95153.51403.24302.15083.24302.1508
C61.52172.53402.87092.53311.35121.08082.10583.51403.95152.15083.24302.15083.2430
H72.22853.50863.95153.51402.10581.08082.41734.41355.03212.56354.13652.56354.1365
H83.50862.22853.51403.95151.08082.10582.41735.03214.41354.13652.56354.13652.5635
H92.22853.50862.10581.08083.95153.51404.41355.03212.41732.56354.13652.56354.1365
H103.50862.22851.08082.10583.51403.95155.03214.41352.41734.13652.56354.13652.5635
H111.09323.80033.24302.15083.24302.15082.56354.13652.56354.13654.36001.74184.6950
H123.80031.09322.15083.24302.15083.24304.13652.56354.13652.56354.36004.69501.7418
H131.09323.80033.24302.15083.24302.15082.56354.13652.56354.13651.74184.69504.3600
H143.80031.09322.15083.24302.15083.24304.13652.56354.13652.56354.69501.74184.3600

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 123.664 C1 C4 H9 116.786
C1 C6 C5 123.664 C1 C6 H7 116.786
C2 C3 C4 123.664 C2 C3 H10 116.786
C2 C5 C6 123.664 C2 C5 H8 116.786
C3 C2 C5 112.672 C3 C2 H12 109.577
C3 C2 H14 109.577 C3 C4 H9 119.550
C4 C1 C6 112.672 C4 C1 H11 109.577
C4 C1 H13 109.577 C4 C3 H10 119.550
C5 C2 H12 109.577 C5 C2 H14 109.577
C5 C6 H7 119.550 C6 C1 H11 109.577
C6 C1 H13 109.577 C6 C5 H8 119.550
H11 C1 H13 105.618 H12 C2 H14 105.618
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.014      
2 C -0.014      
3 C -0.303      
4 C -0.303      
5 C -0.303      
6 C -0.303      
7 H 0.219      
8 H 0.219      
9 H 0.219      
10 H 0.219      
11 H 0.091      
12 H 0.091      
13 H 0.091      
14 H 0.091      


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 -36.099 0.000 0.000
y 0.000 -33.467 0.000
z 0.000 0.000 -40.336
Traceless
 xyz
x 0.802 0.000 0.000
y 0.000 4.751 0.000
z 0.000 0.000 -5.553
Polar
3z2-r2-11.106
x2-y2-2.632
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.761 0.000 0.000
y 0.000 12.127 0.000
z 0.000 0.000 5.069


<r2> (average value of r2) Å2
<r2> 121.684
(<r2>)1/2 11.031