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

using model chemistry: B3LYP/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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-38.658175
Energy at 298.15K-38.666611
Nuclear repulsion energy113.130486
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 B3LYP/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 3161 3053 0.00      
2 Ag 2998 2896 0.00      
3 Ag 1756 1696 0.00      
4 Ag 1472 1422 0.00      
5 Ag 1204 1163 0.00      
6 Ag 852 823 0.00      
7 Ag 521 503 0.00      
8 Au 1200 1159 0.00      
9 Au 987 953 0.00      
10 Au 357 345 0.00      
11 B1g 3124 3016 0.00      
12 B1g 1403 1355 0.00      
13 B1g 1337 1291 0.00      
14 B1g 1034 999 0.00      
15 B1g 550 531 0.00      
16 B1u 3018 2914 87.74      
17 B1u 971 938 42.11      
18 B1u 631 610 100.41      
19 B1u 113 110 1.48      
20 B2g 3017 2914 0.00      
21 B2g 991 957 0.00      
22 B2g 941 909 0.00      
23 B2g 370 357 0.00      
24 B2u 3158 3050 104.65      
25 B2u 1712 1653 10.56      
26 B2u 1379 1332 0.07      
27 B2u 1155 1115 0.05      
28 B2u 944 911 0.21      
29 B3g 1211 1170 0.00      
30 B3g 721 697 0.00      
31 B3u 3124 3017 27.19      
32 B3u 2999 2896 113.09      
33 B3u 1475 1424 5.45      
34 B3u 1416 1368 0.54      
35 B3u 931 899 1.20      
36 B3u 890 859 12.20      

Unscaled Zero Point Vibrational Energy (zpe) 26561.4 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 25650.4 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 B3LYP/CEP-31G*
ABC
0.16803 0.15800 0.08396

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.525 0.000 0.000
C2 -1.525 0.000 0.000
C3 -0.681 1.269 0.000
C4 0.681 1.269 0.000
C5 -0.681 -1.269 0.000
C6 0.681 -1.269 0.000
H7 1.220 -2.224 0.000
H8 -1.220 -2.224 0.000
H9 1.220 2.224 0.000
H10 -1.220 2.224 0.000
H11 2.200 0.000 0.880
H12 -2.200 0.000 0.880
H13 2.200 0.000 -0.880
H14 -2.200 0.000 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.04932.54461.52362.54461.52362.24503.53302.24503.53301.10913.82731.10913.8273
C23.04931.52362.54461.52362.54463.53302.24503.53302.24503.82731.10913.82731.1091
C32.54461.52361.36212.53752.88003.97703.53442.12801.09723.26882.16593.26882.1659
C41.52362.54461.36212.88002.53753.53443.97701.09722.12802.16593.26882.16593.2688
C52.54461.52362.53752.88001.36212.12801.09723.97703.53443.26882.16593.26882.1659
C61.52362.54462.88002.53751.36211.09722.12803.53443.97702.16593.26882.16593.2688
H72.24503.53303.97703.53442.12801.09722.44074.44855.07412.58484.17392.58484.1739
H83.53302.24503.53443.97701.09722.12802.44075.07414.44854.17392.58484.17392.5848
H92.24503.53302.12801.09723.97703.53444.44855.07412.44072.58484.17392.58484.1739
H103.53302.24501.09722.12803.53443.97705.07414.44852.44074.17392.58484.17392.5848
H111.10913.82733.26882.16593.26882.16592.58484.17392.58484.17394.40041.75934.7390
H123.82731.10912.16593.26882.16593.26884.17392.58484.17392.58484.40044.73901.7593
H131.10913.82733.26882.16593.26882.16592.58484.17392.58484.17391.75934.73904.4004
H143.82731.10912.16593.26882.16593.26884.17392.58484.17392.58484.73901.75934.4004

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 123.620 C1 C4 H9 116.940
C1 C6 C5 123.620 C1 C6 H7 116.940
C2 C3 C4 123.620 C2 C3 H10 116.940
C2 C5 C6 123.620 C2 C5 H8 116.940
C3 C2 C5 112.761 C3 C2 H12 109.709
C3 C2 H14 109.709 C3 C4 H9 119.440
C4 C1 C6 112.761 C4 C1 H11 109.709
C4 C1 H13 109.709 C4 C3 H10 119.440
C5 C2 H12 109.709 C5 C2 H14 109.709
C5 C6 H7 119.440 C6 C1 H11 109.709
C6 C1 H13 109.709 C6 C5 H8 119.440
H11 C1 H13 104.953 H12 C2 H14 104.953
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.060      
2 C -0.060      
3 C -0.354      
4 C -0.354      
5 C -0.354      
6 C -0.354      
7 H 0.262      
8 H 0.262      
9 H 0.262      
10 H 0.262      
11 H 0.122      
12 H 0.122      
13 H 0.122      
14 H 0.122      


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 -34.659 0.000 0.000
y 0.000 -32.342 0.000
z 0.000 0.000 -39.043
Traceless
 xyz
x 1.033 0.000 0.000
y 0.000 4.509 0.000
z 0.000 0.000 -5.542
Polar
3z2-r2-11.084
x2-y2-2.317
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.627 0.000 0.000
y 0.000 12.222 0.000
z 0.000 0.000 5.354


<r2> (average value of r2) Å2
<r2> 122.044
(<r2>)1/2 11.047