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: B3LYP/CEP-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 B3LYP/CEP-31G
 hartrees
Energy at 0K-38.545901
Energy at 298.15K-38.552010
Nuclear repulsion energy98.385831
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 A1 3148 3049 69.09      
2 A1 3132 3033 0.09      
3 A1 3020 2924 20.87      
4 A1 2191 2121 0.84      
5 A1 1504 1457 10.66      
6 A1 1428 1383 8.99      
7 A1 1386 1343 0.03      
8 A1 1126 1091 4.57      
9 A1 1091 1057 0.89      
10 A1 763 739 0.06      
11 A1 457 443 6.04      
12 A1 89 86 2.69      
13 A2 3083 2986 0.00      
14 A2 1496 1449 0.00      
15 A2 1066 1033 0.00      
16 A2 884 856 0.00      
17 A2 592 573 0.00      
18 A2 229 222 0.00      
19 A2 134 130 0.00      
20 B1 3084 2986 100.79      
21 B1 1497 1450 28.13      
22 B1 1063 1029 1.17      
23 B1 744 721 86.52      
24 B1 242 235 4.27      
25 B1 118 115 3.26      
26 B2 3148 3048 30.27      
27 B2 3132 3033 0.86      
28 B2 3019 2923 115.27      
29 B2 1695 1641 0.64      
30 B2 1493 1446 19.59      
31 B2 1426 1381 2.69      
32 B2 1293 1252 16.97      
33 B2 1109 1074 4.08      
34 B2 940 910 42.47      
35 B2 500 484 5.17      
36 B2 134 130 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 25728.7 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 24915.6 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
0.41097 0.04393 0.04029

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 2.267 1.618
H2 0.890 3.539 0.725
H3 -0.890 3.539 0.725
H4 0.000 -2.267 1.618
H5 0.890 -3.539 0.725
H6 -0.890 -3.539 0.725
C7 0.000 2.881 0.705
C8 0.000 -2.881 0.705
H9 0.000 2.532 -1.519
H10 0.000 -2.532 -1.519
C11 0.000 -0.655 -0.539
C12 0.000 0.655 -0.539
C13 0.000 2.013 -0.553
C14 0.000 -2.013 -0.553

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 H10 C11 C12 C13 C14
H11.79061.79064.53395.94135.94131.10005.22843.14835.73333.63222.69242.18564.7989
H21.79061.77935.94137.07857.29871.10676.48182.61646.53384.47063.27222.18085.7665
H31.79061.77935.94137.29877.07851.10676.48182.61646.53384.47063.27222.18085.7665
H44.53395.94135.94131.79061.79065.22841.10005.73333.14832.69243.63224.79892.1856
H55.94137.07857.29871.79061.77936.48181.10676.53382.61643.27224.47065.76652.1808
H65.94137.29877.07851.79061.77936.48181.10676.53382.61643.27224.47065.76652.1808
C71.10001.10671.10675.22846.48186.48185.76242.25185.85253.74922.55001.52885.0532
C85.22846.48186.48181.10001.10671.10675.76245.85252.25182.55003.74925.05321.5288
H93.14832.61642.61645.73336.53386.53382.25185.85255.06403.33482.11711.09704.6465
H105.73336.53386.53383.14832.61642.61645.85252.25185.06402.11713.33484.64651.0970
C113.63224.47064.47062.69243.27223.27223.74922.55003.33482.11711.31092.66841.3575
C122.69243.27223.27223.63224.47064.47062.55003.74922.11713.33481.31091.35752.6684
C132.18562.18082.18084.79895.76655.76651.52885.05321.09704.64652.66841.35754.0258
C144.79895.76655.76652.18562.18082.18085.05321.52884.64651.09701.35752.66844.0258

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 108.469 H1 C7 H3 108.469
H1 C7 C13 111.442 H2 C7 H3 106.996
H2 C7 C13 110.660 H3 C7 C13 110.660
H4 C8 H5 108.469 H4 C8 H6 108.469
H4 C8 C14 111.442 H5 C8 H6 106.996
H5 C8 C14 110.660 H6 C8 C14 110.660
C7 C13 H9 117.145 C7 C13 C12 124.028
C8 C14 H10 117.145 C8 C14 C11 124.028
H9 C13 C12 118.827 H10 C14 C11 118.827
C11 C12 C13 179.417 C12 C11 C14 179.417
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 H 0.210      
2 H 0.144      
3 H 0.144      
4 H 0.210      
5 H 0.144      
6 H 0.144      
7 C -0.491      
8 C -0.491      
9 H 0.263      
10 H 0.263      
11 C -0.729      
12 C -0.729      
13 C 0.459      
14 C 0.459      


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 0.503 0.503
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.044 0.000 0.000
y 0.000 -28.135 0.000
z 0.000 0.000 -36.025
Traceless
 xyz
x -6.964 0.000 0.000
y 0.000 9.399 0.000
z 0.000 0.000 -2.435
Polar
3z2-r2-4.869
x2-y2-10.909
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.198 0.000 0.000
y 0.000 22.431 0.000
z 0.000 0.000 6.782


<r2> (average value of r2) Å2
<r2> 220.827
(<r2>)1/2 14.860