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

using model chemistry: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-231.125741
Energy at 298.15K-231.134333
HF Energy-230.539629
Nuclear repulsion energy215.635808
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 CCD/3-21G
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 3154 3067 0.00      
2 Ag 3008 2924 0.00      
3 Ag 1739 1691 0.00      
4 Ag 1561 1518 0.00      
5 Ag 1283 1248 0.00      
6 Ag 828 805 0.00      
7 Ag 554 539 0.00      
8 Au 1282 1247 0.00      
9 Au 1007 979 0.00      
10 Au 374 364 0.00      
11 B1g 3125 3038 0.00      
12 B1g 1445 1405 0.00      
13 B1g 1396 1358 0.00      
14 B1g 1057 1028 0.00      
15 B1g 590 573 0.00      
16 B1u 3026 2942 41.98      
17 B1u 1033 1004 18.37      
18 B1u 650 632 73.81      
19 B1u 82 80 0.42      
20 B2g 3026 2942 0.00      
21 B2g 1042 1013 0.00      
22 B2g 982 955 0.00      
23 B2g 382 372 0.00      
24 B2u 3150 3063 70.60      
25 B2u 1704 1657 0.90      
26 B2u 1401 1362 2.07      
27 B2u 1238 1204 0.82      
28 B2u 924 898 0.47      
29 B3g 1283 1247 0.00      
30 B3g 737 716 0.00      
31 B3u 3126 3040 13.90      
32 B3u 3009 2925 52.28      
33 B3u 1567 1524 3.74      
34 B3u 1480 1439 0.11      
35 B3u 1001 973 0.84      
36 B3u 866 842 5.54      

Unscaled Zero Point Vibrational Energy (zpe) 27055.2 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 26305.7 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 CCD/3-21G
ABC
0.16801 0.15988 0.08451

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.521 0.000 0.000
C2 -1.521 0.000 0.000
C3 -0.671 1.270 0.000
C4 0.671 1.270 0.000
C5 -0.671 -1.270 0.000
C6 0.671 -1.270 0.000
H7 1.216 -2.216 0.000
H8 -1.216 -2.216 0.000
H9 1.216 2.216 0.000
H10 -1.216 2.216 0.000
H11 2.182 0.000 0.884
H12 -2.182 0.000 0.884
H13 2.182 0.000 -0.884
H14 -2.182 0.000 -0.884

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.04192.53311.52802.53311.52802.23663.52142.23663.52141.10413.80741.10413.8074
C23.04191.52802.53311.52802.53313.52142.23663.52142.23663.80741.10413.80741.1041
C32.53311.52801.34192.53962.87233.96353.52792.11081.09173.24582.16293.24582.1629
C41.52802.53311.34192.87232.53963.52793.96351.09172.11082.16293.24582.16293.2458
C52.53311.52802.53962.87231.34192.11081.09173.96353.52793.24582.16293.24582.1629
C61.52802.53312.87232.53961.34191.09172.11083.52793.96352.16293.24582.16293.2458
H72.23663.52143.96353.52792.11081.09172.43194.43145.05492.57394.15212.57394.1521
H83.52142.23663.52793.96351.09172.11082.43195.05494.43144.15212.57394.15212.5739
H92.23663.52142.11081.09173.96353.52794.43145.05492.43192.57394.15212.57394.1521
H103.52142.23661.09172.11083.52793.96355.05494.43142.43194.15212.57394.15212.5739
H111.10413.80743.24582.16293.24582.16292.57394.15212.57394.15214.36471.76824.7093
H123.80741.10412.16293.24582.16293.24584.15212.57394.15212.57394.36474.70931.7682
H131.10413.80743.24582.16293.24582.16292.57394.15212.57394.15211.76824.70934.3647
H143.80741.10412.16293.24582.16293.24584.15212.57394.15212.57394.70931.76824.3647

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 123.798 C1 C4 H9 116.253
C1 C6 C5 123.798 C1 C6 H7 116.253
C2 C3 C4 123.798 C2 C3 H10 116.253
C2 C5 C6 123.798 C2 C5 H8 116.253
C3 C2 C5 112.404 C3 C2 H12 109.465
C3 C2 H14 109.465 C3 C4 H9 119.949
C4 C1 C6 112.404 C4 C1 H11 109.465
C4 C1 H13 109.465 C4 C3 H10 119.949
C5 C2 H12 109.465 C5 C2 H14 109.465
C5 C6 H7 119.949 C6 C1 H11 109.465
C6 C1 H13 109.465 C6 C5 H8 119.949
H11 C1 H13 106.395 H12 C2 H14 106.395
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CCD/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.492     0.000
2 C -0.492     0.000
3 C -0.198     0.000
4 C -0.198     0.000
5 C -0.198     0.000
6 C -0.198     0.000
7 H 0.219     0.000
8 H 0.219     0.000
9 H 0.219     0.000
10 H 0.219     0.000
11 H 0.225     0.000
12 H 0.225     0.000
13 H 0.225     0.000
14 H 0.225     0.000


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 147.907
(<r2>)1/2 12.162