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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-37.539169
Energy at 298.15K-37.548057
Nuclear repulsion energy114.062763
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 3367 3024 0.00      
2 Ag 3202 2876 0.00      
3 Ag 1910 1715 0.00      
4 Ag 1614 1450 0.00      
5 Ag 1305 1172 0.00      
6 Ag 907 814 0.00      
7 Ag 561 504 0.00      
8 Au 1318 1184 0.00      
9 Au 1099 987 0.00      
10 Au 391 351 0.00      
11 B1g 3328 2988 0.00      
12 B1g 1551 1392 0.00      
13 B1g 1462 1313 0.00      
14 B1g 1110 997 0.00      
15 B1g 592 532 0.00      
16 B1u 3227 2898 115.82      
17 B1u 1083 972 54.26      
18 B1u 697 626 80.79      
19 B1u 141 127 1.20      
20 B2g 3226 2897 0.00      
21 B2g 1111 998 0.00      
22 B2g 1035 929 0.00      
23 B2g 408 366 0.00      
24 B2u 3363 3020 130.99      
25 B2u 1863 1673 10.07      
26 B2u 1520 1365 1.02      
27 B2u 1253 1125 0.16      
28 B2u 1012 909 0.59      
29 B3g 1328 1192 0.00      
30 B3g 799 718 0.00      
31 B3u 3328 2988 43.97      
32 B3u 3202 2875 149.11      
33 B3u 1616 1451 1.36      
34 B3u 1543 1385 0.83      
35 B3u 1017 914 2.51      
36 B3u 952 855 8.19      

Unscaled Zero Point Vibrational Energy (zpe) 28719.1 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 25789.7 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 HF/CEP-31G*
ABC
0.16981 0.16081 0.08515

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 1.515 0.000 0.000
C2 -1.515 0.000 0.000
C3 -0.673 1.263 0.000
C4 0.673 1.263 0.000
C5 -0.673 -1.263 0.000
C6 0.673 -1.263 0.000
H7 1.204 -2.207 0.000
H8 -1.204 -2.207 0.000
H9 1.204 2.207 0.000
H10 -1.204 2.207 0.000
H11 2.176 0.000 0.872
H12 -2.176 0.000 0.872
H13 2.176 0.000 -0.872
H14 -2.176 0.000 -0.872

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.03052.52641.51832.52641.51832.22843.50222.22843.50221.09403.79301.09403.7930
C23.03051.51832.52641.51832.52643.50222.22843.50222.22843.79301.09403.79301.0940
C32.52641.51831.34542.52622.86213.94493.51022.10081.08303.23602.14853.23602.1485
C41.51832.52641.34542.86212.52623.51023.94491.08302.10082.14853.23602.14853.2360
C52.52641.51832.52622.86211.34542.10081.08303.94493.51023.23602.14853.23602.1485
C61.51832.52642.86212.52621.34541.08302.10083.51023.94492.14853.23602.14853.2360
H72.22843.50223.94493.51022.10081.08302.40874.41335.02782.56394.13002.56394.1300
H83.50222.22843.51023.94491.08302.10082.40875.02784.41334.13002.56394.13002.5639
H92.22843.50222.10081.08303.94493.51024.41335.02782.40872.56394.13002.56394.1300
H103.50222.22841.08302.10083.51023.94495.02784.41332.40874.13002.56394.13002.5639
H111.09403.79303.23602.14853.23602.14852.56394.13002.56394.13004.35241.74364.6886
H123.79301.09402.14853.23602.14853.23604.13002.56394.13002.56394.35244.68861.7436
H131.09403.79303.23602.14853.23602.14852.56394.13002.56394.13001.74364.68864.3524
H143.79301.09402.14853.23602.14853.23604.13002.56394.13002.56394.68861.74364.3524

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 123.706 C1 C4 H9 116.896
C1 C6 C5 123.706 C1 C6 H7 116.896
C2 C3 C4 123.706 C2 C3 H10 116.896
C2 C5 C6 123.706 C2 C5 H8 116.896
C3 C2 C5 112.588 C3 C2 H12 109.588
C3 C2 H14 109.588 C3 C4 H9 119.398
C4 C1 C6 112.588 C4 C1 H11 109.588
C4 C1 H13 109.588 C4 C3 H10 119.398
C5 C2 H12 109.588 C5 C2 H14 109.588
C5 C6 H7 119.398 C6 C1 H11 109.588
C6 C1 H13 109.588 C6 C5 H8 119.398
H11 C1 H13 105.667 H12 C2 H14 105.667
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 0.052      
2 C 0.052      
3 C -0.360      
4 C -0.360      
5 C -0.360      
6 C -0.360      
7 H 0.245      
8 H 0.245      
9 H 0.245      
10 H 0.245      
11 H 0.090      
12 H 0.090      
13 H 0.090      
14 H 0.090      


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 -35.657 0.000 0.000
y 0.000 -33.197 0.000
z 0.000 0.000 -39.820
Traceless
 xyz
x 0.852 0.000 0.000
y 0.000 4.541 0.000
z 0.000 0.000 -5.393
Polar
3z2-r2-10.786
x2-y2-2.459
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.033 0.000 0.000
y 0.000 12.008 0.000
z 0.000 0.000 5.263


<r2> (average value of r2) Å2
<r2> 121.026
(<r2>)1/2 11.001