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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-231.858581
Energy at 298.15K-231.865332
HF Energy-231.858581
Nuclear repulsion energy191.344461
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 HF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3284 2976 0.00      
2 Ag 3249 2945 0.00      
3 Ag 3156 2861 0.00      
4 Ag 2348 2129 0.00      
5 Ag 1611 1460 0.00      
6 Ag 1534 1391 0.00      
7 Ag 1498 1358 0.00      
8 Ag 1192 1080 0.00      
9 Ag 1150 1042 0.00      
10 Ag 815 738 0.00      
11 Ag 582 527 0.00      
12 Ag 225 204 0.00      
13 Au 3199 2900 55.82      
14 Au 1598 1449 11.42      
15 Au 1160 1052 4.93      
16 Au 953 864 42.17      
17 Au 358 325 0.63      
18 Au 177 161 0.13      
19 Au 123 112 4.77      
20 Bg 3199 2900 0.00      
21 Bg 1598 1449 0.00      
22 Bg 1159 1051 0.00      
23 Bg 799 724 0.00      
24 Bg 586 531 0.00      
25 Bg 179 162 0.00      
26 Bu 3284 2977 35.81      
27 Bu 3249 2945 21.23      
28 Bu 3156 2860 115.97      
29 Bu 1851 1678 4.03      
30 Bu 1601 1451 16.51      
31 Bu 1530 1387 25.01      
32 Bu 1392 1262 30.75      
33 Bu 1197 1085 4.95      
34 Bu 990 897 31.15      
35 Bu 573 519 12.67      
36 Bu 117 106 2.59      

Unscaled Zero Point Vibrational Energy (zpe) 27336.7 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 24778.0 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 HF/Def2TZVPP
ABC
0.69917 0.04317 0.04128

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.004 0.628 0.000
C2 -0.004 -0.628 0.000
C3 -0.004 1.925 0.000
C4 0.004 -1.925 0.000
C5 -1.245 2.770 0.000
C6 1.245 -2.770 0.000
H7 0.942 2.435 0.000
H8 -0.942 -2.435 0.000
H9 -2.137 2.161 0.000
H10 2.137 -2.161 0.000
H11 -1.266 3.413 0.873
H12 -1.266 3.413 -0.873
H13 1.266 -3.413 0.873
H14 1.266 -3.413 -0.873

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.25611.29732.55332.47923.61712.03643.20632.63293.51063.18303.18304.32254.3225
C21.25612.55331.29733.61712.47923.20632.03643.51062.63294.32254.32253.18303.1830
C31.29732.55333.85051.50074.85831.07544.46042.14544.61282.13712.13715.55635.5563
C42.55331.29733.85054.85831.50074.46041.07544.61282.14545.55635.55632.13712.1371
C52.47923.61711.50074.85836.07312.21275.21381.08015.97851.08471.08476.72996.7299
C63.61712.47924.85831.50076.07315.21382.21275.97851.08016.72996.72991.08471.0847
H72.03643.20631.07544.46042.21275.21385.22283.09144.74862.56802.56805.92205.9220
H83.20632.03644.46041.07545.21382.21275.22284.74863.09145.92205.92202.56802.5680
H92.63293.51062.14544.61281.08015.97853.09144.74866.07741.75761.75766.58826.5882
H103.51062.63294.61282.14545.97851.08014.74863.09146.07746.58826.58821.75761.7576
H113.18304.32252.13715.55631.08476.72992.56805.92201.75766.58821.74627.28037.4868
H123.18304.32252.13715.55631.08476.72992.56805.92201.75766.58821.74627.48687.2803
H134.32253.18305.55632.13716.72991.08475.92202.56806.58821.75767.28037.48681.7462
H144.32253.18305.55632.13716.72991.08475.92202.56806.58821.75767.48687.28031.7462

picture of (E)-hexa-2,3,4-triene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 179.249 C1 C3 C5 124.611
C1 C3 H7 117.949 C2 C1 C3 179.249
C2 C4 C6 124.611 C2 C4 H8 117.949
C3 C5 H9 111.428 C3 C5 H11 110.473
C3 C5 H12 110.473 C4 C6 H10 111.428
C4 C6 H13 110.473 C4 C6 H14 110.473
C5 C3 H7 117.440 C6 C4 H8 117.440
H9 C5 H11 108.568 H9 C5 H12 108.568
H10 C6 H13 108.568 H10 C6 H14 108.568
H11 C5 H12 107.206 H13 C6 H14 107.206
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.066      
2 C -0.066      
3 C -0.079      
4 C -0.079      
5 C -0.126      
6 C -0.126      
7 H 0.070      
8 H 0.070      
9 H 0.074      
10 H 0.074      
11 H 0.063      
12 H 0.063      
13 H 0.063      
14 H 0.063      


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 -36.513 -0.634 0.000
y -0.634 -29.643 0.000
z 0.000 0.000 -39.705
Traceless
 xyz
x -1.839 -0.634 0.000
y -0.634 8.466 0.000
z 0.000 0.000 -6.627
Polar
3z2-r2-13.254
x2-y2-6.870
xy-0.634
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.250 -2.026 0.000
y -2.026 22.500 0.000
z 0.000 0.000 7.130


<r2> (average value of r2) Å2
<r2> 271.794
(<r2>)1/2 16.486