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

using model chemistry: CCD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-232.717259
Energy at 298.15K-232.725744
HF Energy-231.852232
Nuclear repulsion energy217.605161
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/6-31+G**
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 3245 3058 0.00      
2 Ag 3075 2898 0.00      
3 Ag 1793 1690 0.00      
4 Ag 1533 1445 0.00      
5 Ag 1255 1183 0.00      
6 Ag 878 827 0.00      
7 Ag 547 515 0.00      
8 Au 1227 1156 0.00      
9 Au 990 933 0.00      
10 Au 364 343 0.00      
11 B1g 3220 3034 0.00      
12 B1g 1456 1372 0.00      
13 B1g 1406 1325 0.00      
14 B1g 1077 1015 0.00      
15 B1g 581 548 0.00      
16 B1u 3101 2922 38.35      
17 B1u 1026 967 36.86      
18 B1u 640 603 72.87      
19 B1u 79 75 1.21      
20 B2g 3101 2922 0.00      
21 B2g 1004 946 0.00      
22 B2g 973 917 0.00      
23 B2g 309 291 0.00      
24 B2u 3243 3055 78.31      
25 B2u 1749 1648 8.59      
26 B2u 1436 1353 0.00      
27 B2u 1208 1139 0.14      
28 B2u 972 916 0.24      
29 B3g 1238 1166 0.00      
30 B3g 728 686 0.00      
31 B3u 3220 3035 18.66      
32 B3u 3076 2899 80.26      
33 B3u 1534 1446 4.30      
34 B3u 1478 1393 0.08      
35 B3u 982 926 0.95      
36 B3u 921 868 7.13      

Unscaled Zero Point Vibrational Energy (zpe) 27332.2 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 25755.2 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 CCD/6-31+G**
ABC
0.17174 0.16256 0.08612

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.504 0.000 0.000
C2 -1.504 0.000 0.000
C3 -0.670 1.255 0.000
C4 0.670 1.255 0.000
C5 -0.670 -1.255 0.000
C6 0.670 -1.255 0.000
H7 1.204 -2.199 0.000
H8 -1.204 -2.199 0.000
H9 1.204 2.199 0.000
H10 -1.204 2.199 0.000
H11 2.169 0.000 0.871
H12 -2.169 0.000 0.871
H13 2.169 0.000 -0.871
H14 -2.169 0.000 -0.871

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.00872.51011.50732.51011.50732.21973.48852.21973.48851.09623.77571.09623.7757
C23.00871.50732.51011.50732.51013.48852.21973.48852.21973.77571.09623.77571.0962
C32.51011.50731.33902.51002.84493.92943.49532.09771.08483.22402.14103.22402.1410
C41.50732.51011.33902.84492.51003.49533.92941.08482.09772.14103.22402.14103.2240
C52.51011.50732.51002.84491.33902.09771.08483.92943.49533.22402.14103.22402.1410
C61.50732.51012.84492.51001.33901.08482.09773.49533.92942.14103.22402.14103.2240
H72.21973.48853.92943.49532.09771.08482.40744.39845.01412.55514.11992.55514.1199
H83.48852.21973.49533.92941.08482.09772.40745.01414.39844.11992.55514.11992.5551
H92.21973.48852.09771.08483.92943.49534.39845.01412.40742.55514.11992.55514.1199
H103.48852.21971.08482.09773.49533.92945.01414.39842.40744.11992.55514.11992.5551
H111.09623.77573.22402.14103.22402.14102.55514.11992.55514.11994.33881.74294.6758
H123.77571.09622.14103.22402.14103.22404.11992.55514.11992.55514.33884.67581.7429
H131.09623.77573.22402.14103.22402.14102.55514.11992.55514.11991.74294.67584.3388
H143.77571.09622.14103.22402.14103.22404.11992.55514.11992.55514.67581.74294.3388

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 123.631 C1 C4 H9 116.871
C1 C6 C5 123.631 C1 C6 H7 116.871
C2 C3 C4 123.631 C2 C3 H10 116.871
C2 C5 C6 123.631 C2 C5 H8 116.871
C3 C2 C5 112.738 C3 C2 H12 109.634
C3 C2 H14 109.634 C3 C4 H9 119.498
C4 C1 C6 112.738 C4 C1 H11 109.634
C4 C1 H13 109.634 C4 C3 H10 119.498
C5 C2 H12 109.634 C5 C2 H14 109.634
C5 C6 H7 119.498 C6 C1 H11 109.634
C6 C1 H13 109.634 C6 C5 H8 119.498
H11 C1 H13 105.299 H12 C2 H14 105.299
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CCD/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.371     0.000
2 C -0.371     0.000
3 C -0.100     0.000
4 C -0.100     0.000
5 C -0.100     0.000
6 C -0.100     0.000
7 H 0.148     0.000
8 H 0.148     0.000
9 H 0.148     0.000
10 H 0.148     0.000
11 H 0.138     0.000
12 H 0.138     0.000
13 H 0.138     0.000
14 H 0.138     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> 0.000
(<r2>)1/2 0.000