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 ((Z)-hexa-2,3,4-triene)

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-233.246760
Energy at 298.15K-233.252996
HF Energy-233.246760
Nuclear repulsion energy188.615245
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 BLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3060 3035 41.55      
2 A1 3036 3012 11.71      
3 A1 2949 2925 13.15      
4 A1 2140 2123 1.02      
5 A1 1486 1474 4.47      
6 A1 1392 1381 1.29      
7 A1 1367 1356 0.42      
8 A1 1091 1083 2.17      
9 A1 1061 1053 0.50      
10 A1 748 742 0.32      
11 A1 462 458 5.00      
12 A1 97 96 1.03      
13 A2 2987 2963 0.00      
14 A2 1471 1460 0.00      
15 A2 1028 1020 0.00      
16 A2 825 819 0.00      
17 A2 602 597 0.00      
18 A2 224 222 0.00      
19 A2 147 146 0.00      
20 B1 2987 2963 53.21      
21 B1 1472 1460 9.24      
22 B1 1024 1015 0.13      
23 B1 680 675 35.71      
24 B1 248 246 0.82      
25 B1 129 128 2.02      
26 B2 3059 3035 14.91      
27 B2 3037 3012 4.21      
28 B2 2948 2924 86.65      
29 B2 1667 1653 4.06      
30 B2 1474 1462 10.53      
31 B2 1389 1378 16.02      
32 B2 1273 1263 24.25      
33 B2 1075 1066 3.09      
34 B2 913 906 35.58      
35 B2 555 551 3.07      
36 B2 220 218 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 25161.1 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 24957.3 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 BLYP/6-31G*
ABC
0.41727 0.04530 0.04151

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 2.233 1.652
H2 0.887 3.502 0.756
H3 -0.887 3.502 0.756
H4 0.000 -2.233 1.652
H5 0.887 -3.502 0.756
H6 -0.887 -3.502 0.756
C7 0.000 2.843 0.737
C8 0.000 -2.843 0.737
H9 0.000 2.504 -1.470
H10 0.000 -2.504 -1.470
C11 0.000 -0.640 -0.511
C12 0.000 0.640 -0.511
C13 0.000 1.972 -0.508
C14 0.000 -1.972 -0.508

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 H10 C11 C12 C13 C14
H11.78901.78904.46685.87295.87291.09995.15833.13335.67343.59652.68692.17544.7272
H21.78901.77355.87297.00507.22601.10526.40722.59506.46654.42143.25372.17375.6876
H31.78901.77355.87297.22607.00501.10526.40722.59506.46654.42143.25372.17375.6876
H44.46685.87295.87291.78901.78905.15831.09995.67343.13332.68693.59654.72722.1754
H55.87297.00507.22601.78901.77356.40721.10526.46652.59503.25374.42145.68762.1737
H65.87297.22607.00501.78901.77356.40721.10526.46652.59503.25374.42145.68762.1737
C71.09991.10521.10525.15836.40726.40725.68612.23205.78443.69962.53221.51894.9729
C85.15836.40726.40721.09991.10521.10525.68615.78442.23202.53223.69964.97291.5189
H93.13332.59502.59505.67346.46656.46652.23205.78445.00813.28662.09621.09954.5780
H105.67346.46656.46653.13332.59502.59505.78442.23205.00812.09623.28664.57801.0995
C113.59654.42144.42142.68693.25373.25373.69962.53223.28662.09621.27942.61141.3320
C122.68693.25373.25373.59654.42144.42142.53223.69962.09623.28661.27941.33202.6114
C132.17542.17372.17374.72725.68765.68761.51894.97291.09954.57802.61141.33203.9434
C144.72725.68765.68762.17542.17372.17374.97291.51894.57801.09951.33202.61143.9434

picture of (Z)-hexa-2,3,4-triene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C7 H2 108.448 H1 C7 H3 108.448
H1 C7 C13 111.331 H2 C7 H3 106.705
H2 C7 C13 110.875 H3 C7 C13 110.875
H4 C8 H5 108.448 H4 C8 H6 108.448
H4 C8 C14 111.331 H5 C8 H6 106.705
H5 C8 C14 110.875 H6 C8 C14 110.875
C7 C13 H9 116.034 C7 C13 C12 125.167
C8 C14 H10 116.034 C8 C14 C11 125.167
H9 C13 C12 118.799 H10 C14 C11 118.799
C11 C12 C13 179.841 C12 C11 C14 179.841
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.146      
2 H 0.146      
3 H 0.146      
4 H 0.146      
5 H 0.146      
6 H 0.146      
7 C -0.425      
8 C -0.425      
9 H 0.131      
10 H 0.131      
11 C 0.239      
12 C 0.239      
13 C -0.383      
14 C -0.383      


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 0.373 0.373
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.265 0.000 0.000
y 0.000 -29.597 0.000
z 0.000 0.000 -35.914
Traceless
 xyz
x -5.510 0.000 0.000
y 0.000 7.493 0.000
z 0.000 0.000 -1.983
Polar
3z2-r2-3.966
x2-y2-8.669
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.243 0.000 0.000
y 0.000 21.782 0.000
z 0.000 0.000 7.249


<r2> (average value of r2) Å2
<r2> 269.383
(<r2>)1/2 16.413