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

using model chemistry: B3LYP/CEP-121G*

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-121G*
 hartrees
Energy at 0K-38.684763
Energy at 298.15K-38.693295
Nuclear repulsion energy113.844023
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-121G*
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 3142 3046 0.00      
2 Ag 2971 2880 0.00      
3 Ag 1725 1672 0.00      
4 Ag 1483 1438 0.00      
5 Ag 1214 1177 0.00      
6 Ag 841 815 0.00      
7 Ag 531 515 0.00      
8 Au 1209 1172 0.00      
9 Au 981 951 0.00      
10 Au 372 360 0.00      
11 B1g 3117 3022 0.00      
12 B1g 1397 1354 0.00      
13 B1g 1352 1311 0.00      
14 B1g 1029 998 0.00      
15 B1g 566 549 0.00      
16 B1u 2980 2889 75.82      
17 B1u 983 953 31.55      
18 B1u 626 607 72.08      
19 B1u 117 113 1.21      
20 B2g 2981 2890 0.00      
21 B2g 1002 971 0.00      
22 B2g 959 930 0.00      
23 B2g 395 383 0.00      
24 B2u 3140 3044 115.11      
25 B2u 1677 1626 9.65      
26 B2u 1377 1335 0.19      
27 B2u 1169 1133 0.01      
28 B2u 931 903 0.21      
29 B3g 1217 1180 0.00      
30 B3g 713 691 0.00      
31 B3u 3117 3022 32.12      
32 B3u 2972 2881 128.83      
33 B3u 1486 1441 3.88      
34 B3u 1425 1382 0.03      
35 B3u 957 928 0.87      
36 B3u 878 851 9.74      

Unscaled Zero Point Vibrational Energy (zpe) 26516.8 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 25705.3 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-121G*
ABC
0.16922 0.16091 0.08504

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.512 0.000 0.000
C2 -1.512 0.000 0.000
C3 -0.672 1.265 0.000
C4 0.672 1.265 0.000
C5 -0.672 -1.265 0.000
C6 0.672 -1.265 0.000
H7 1.210 -2.215 0.000
H8 -1.210 -2.215 0.000
H9 1.210 2.215 0.000
H10 -1.210 2.215 0.000
H11 2.187 0.000 0.874
H12 -2.187 0.000 0.874
H13 2.187 0.000 -0.874
H14 -2.187 0.000 -0.874

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.02372.52321.51842.52321.51842.23503.50922.23503.50921.10413.80031.10413.8003
C23.02371.51842.52321.51842.52323.50922.23503.50922.23503.80031.10413.80031.1041
C32.52321.51841.34312.52932.86383.95553.52062.10801.09203.24532.15833.24532.1583
C41.51842.52321.34312.86382.52933.52063.95551.09202.10802.15833.24532.15833.2453
C52.52321.51842.52932.86381.34312.10801.09203.95553.52063.24532.15833.24532.1583
C61.51842.52322.86382.52931.34311.09202.10803.52063.95552.15833.24532.15833.2453
H72.23503.50923.95553.52062.10801.09202.42064.42915.04732.57314.14812.57314.1481
H83.50922.23503.52063.95551.09202.10802.42065.04734.42914.14812.57314.14812.5731
H92.23503.50922.10801.09203.95553.52064.42915.04732.42062.57314.14812.57314.1481
H103.50922.23501.09202.10803.52063.95555.04734.42912.42064.14812.57314.14812.5731
H111.10413.80033.24532.15833.24532.15832.57314.14812.57314.14814.37311.74804.7095
H123.80031.10412.15833.24532.15833.24534.14812.57314.14812.57314.37314.70951.7480
H131.10413.80033.24532.15833.24532.15832.57314.14812.57314.14811.74804.70954.3731
H143.80031.10412.15833.24532.15833.24534.14812.57314.14812.57314.70951.74804.3731

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 123.603 C1 C4 H9 116.835
C1 C6 C5 123.603 C1 C6 H7 116.835
C2 C3 C4 123.603 C2 C3 H10 116.835
C2 C5 C6 123.603 C2 C5 H8 116.835
C3 C2 C5 112.793 C3 C2 H12 109.766
C3 C2 H14 109.766 C3 C4 H9 119.562
C4 C1 C6 112.793 C4 C1 H11 109.766
C4 C1 H13 109.766 C4 C3 H10 119.562
C5 C2 H12 109.766 C5 C2 H14 109.766
C5 C6 H7 119.562 C6 C1 H11 109.766
C6 C1 H13 109.766 C6 C5 H8 119.562
H11 C1 H13 104.670 H12 C2 H14 104.670
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.344      
2 C -0.344      
3 C -0.155      
4 C -0.155      
5 C -0.155      
6 C -0.155      
7 H 0.169      
8 H 0.169      
9 H 0.169      
10 H 0.169      
11 H 0.159      
12 H 0.159      
13 H 0.159      
14 H 0.159      


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 -35.719 0.000 0.000
y 0.000 -33.456 0.000
z 0.000 0.000 -39.537
Traceless
 xyz
x 0.777 0.000 0.000
y 0.000 4.172 0.000
z 0.000 0.000 -4.950
Polar
3z2-r2-9.899
x2-y2-2.263
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.475 0.000 0.000
y 0.000 13.043 0.000
z 0.000 0.000 6.174


<r2> (average value of r2) Å2
<r2> 121.366
(<r2>)1/2 11.017