return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HSEh1PBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-233.229279
Energy at 298.15K-233.237970
HF Energy-233.229279
Nuclear repulsion energy219.105625
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 HSEh1PBE/cc-pVTZ
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 3181 3057 0.00      
2 Ag 2999 2882 0.00      
3 Ag 1773 1704 0.00      
4 Ag 1459 1402 0.00      
5 Ag 1227 1179 0.00      
6 Ag 877 843 0.00      
7 Ag 543 522 0.00      
8 Au 1218 1171 0.00      
9 Au 1012 973 0.00      
10 Au 390 375 0.00      
11 B1g 3156 3034 0.00      
12 B1g 1418 1362 0.00      
13 B1g 1366 1312 0.00      
14 B1g 1052 1011 0.00      
15 B1g 581 559 0.00      
16 B1u 3009 2892 36.01      
17 B1u 987 949 27.21      
18 B1u 632 608 65.02      
19 B1u 119 114 1.01      
20 B2g 3010 2893 0.00      
21 B2g 1030 990 0.00      
22 B2g 966 929 0.00      
23 B2g 416 400 0.00      
24 B2u 3179 3055 65.19      
25 B2u 1725 1658 6.81      
26 B2u 1391 1337 0.50      
27 B2u 1175 1130 0.18      
28 B2u 962 925 0.24      
29 B3g 1221 1173 0.00      
30 B3g 729 700 0.00      
31 B3u 3156 3034 16.10      
32 B3u 3001 2884 83.63      
33 B3u 1463 1406 10.52      
34 B3u 1443 1387 0.57      
35 B3u 980 942 0.45      
36 B3u 909 874 14.02      

Unscaled Zero Point Vibrational Energy (zpe) 26877.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 25832.0 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 HSEh1PBE/cc-pVTZ
ABC
0.17423 0.16519 0.08746

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.492 0.000 0.000
C2 -1.492 0.000 0.000
C3 -0.663 1.245 0.000
C4 0.663 1.245 0.000
C5 -0.663 -1.245 0.000
C6 0.663 -1.245 0.000
H7 1.200 -2.189 0.000
H8 -1.200 -2.189 0.000
H9 1.200 2.189 0.000
H10 -1.200 2.189 0.000
H11 2.162 0.000 0.869
H12 -2.162 0.000 0.869
H13 2.162 0.000 -0.869
H14 -2.162 0.000 -0.869

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C12.98442.48901.49612.48901.49612.20833.46942.20833.46941.09733.75621.09733.7562
C22.98441.49612.48901.49612.48903.46942.20833.46942.20833.75621.09733.75621.0973
C32.48901.49611.32592.49042.82143.90663.47572.08791.08553.20732.13383.20732.1338
C41.49612.48901.32592.82142.49043.47573.90661.08552.08792.13383.20732.13383.2073
C52.48901.49612.49042.82141.32592.08791.08553.90663.47573.20732.13383.20732.1338
C61.49612.48902.82142.49041.32591.08552.08793.47573.90662.13383.20732.13383.2073
H72.20833.46943.90663.47572.08791.08552.39924.37764.99192.54414.10442.54414.1044
H83.46942.20833.47573.90661.08552.08792.39924.99194.37764.10442.54414.10442.5441
H92.20833.46942.08791.08553.90663.47574.37764.99192.39922.54414.10442.54414.1044
H103.46942.20831.08552.08793.47573.90664.99194.37762.39924.10442.54414.10442.5441
H111.09733.75623.20732.13383.20732.13382.54414.10442.54414.10444.32401.73844.6603
H123.75621.09732.13383.20732.13383.20734.10442.54414.10442.54414.32404.66031.7384
H131.09733.75623.20732.13383.20732.13382.54414.10442.54414.10441.73844.66034.3240
H143.75621.09732.13383.20732.13383.20734.10442.54414.10442.54414.66031.73844.3240

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 123.662 C1 C4 H9 116.711
C1 C6 C5 123.662 C1 C6 H7 116.711
C2 C3 C4 123.662 C2 C3 H10 116.711
C2 C5 C6 123.662 C2 C5 H8 116.711
C3 C2 C5 112.677 C3 C2 H12 109.775
C3 C2 H14 109.775 C3 C4 H9 119.627
C4 C1 C6 112.677 C4 C1 H11 109.775
C4 C1 H13 109.775 C4 C3 H10 119.627
C5 C2 H12 109.775 C5 C2 H14 109.775
C5 C6 H7 119.627 C6 C1 H11 109.775
C6 C1 H13 109.775 C6 C5 H8 119.627
H11 C1 H13 104.766 H12 C2 H14 104.766
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.094      
2 C -0.094      
3 C -0.157      
4 C -0.157      
5 C -0.157      
6 C -0.157      
7 H 0.114      
8 H 0.114      
9 H 0.114      
10 H 0.114      
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 -33.358 0.000 0.000
y 0.000 -35.724 0.000
z 0.000 0.000 -39.144
Traceless
 xyz
x 4.076 0.000 0.000
y 0.000 0.527 0.000
z 0.000 0.000 -4.603
Polar
3z2-r2-9.206
x2-y22.366
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.680 0.000 0.000
y 0.000 9.614 0.000
z 0.000 0.000 6.378


<r2> (average value of r2) Å2
<r2> 143.567
(<r2>)1/2 11.982