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: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-232.217625
Energy at 298.15K-232.223831
Nuclear repulsion energy188.019969
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 MP2/6-31G
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 3157 3020 46.31      
2 A1 3142 3006 0.30      
3 A1 3047 2915 17.47      
4 A1 2155 2062 0.54      
5 A1 1570 1502 4.81      
6 A1 1480 1416 5.88      
7 A1 1428 1366 0.13      
8 A1 1143 1094 3.04      
9 A1 1115 1067 0.13      
10 A1 762 729 0.37      
11 A1 469 448 5.61      
12 A1 90 86 1.35      
13 A2 3116 2982 0.00      
14 A2 1552 1485 0.00      
15 A2 1106 1058 0.00      
16 A2 878 840 0.00      
17 A2 238 228 0.00      
18 A2 119 114 0.00      
19 B1 3116 2982 50.61      
20 B1 1553 1486 12.54      
21 B1 1105 1057 0.71      
22 B1 733 701 48.06      
23 B1 134 128 1.67      
24 B1 105 100 1.23      
25 B2 3156 3020 22.98      
26 B2 3142 3006 1.63      
27 B2 3047 2915 53.06      
28 B2 1678 1605 3.65      
29 B2 1562 1494 8.84      
30 B2 1478 1414 5.52      
31 B2 1343 1285 11.92      
32 B2 1129 1080 7.39      
33 B2 960 918 17.56      
34 B2 514 492 3.09      
35 B2 155 148 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 25737.1 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 24625.3 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 MP2/6-31G
ABC
0.41203 0.04506 0.04126

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 2.227 1.642
H2 0.888 3.501 0.765
H3 -0.888 3.501 0.765
H4 0.000 -2.227 1.642
H5 0.888 -3.501 0.765
H6 -0.888 -3.501 0.765
C7 0.000 2.851 0.739
C8 0.000 -2.851 0.739
H9 0.000 2.519 -1.466
H10 0.000 -2.519 -1.466
C11 0.000 -0.643 -0.513
C12 0.000 0.643 -0.513
C13 0.000 1.985 -0.510
C14 0.000 -1.985 -0.510

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 H10 C11 C12 C13 C14
H11.78391.78394.45365.86275.86271.09815.15773.12145.67253.58902.67392.16594.7295
H21.78391.77545.86277.00307.22451.10076.41442.59406.48124.42723.25402.17145.7018
H31.78391.77545.86277.22457.00301.10076.41442.59406.48124.42723.25402.17145.7018
H44.45365.86275.86271.78391.78395.15771.09815.67253.12142.67393.58904.72952.1659
H55.86277.00307.22451.78391.77546.41441.10076.48122.59403.25404.42725.70182.1714
H65.86277.22457.00301.78391.77546.41441.10076.48122.59403.25404.42725.70182.1714
C71.09811.10071.10075.15776.41446.41445.70222.22935.80463.71192.53761.52024.9944
C85.15776.41446.41441.09811.10071.10075.70225.80462.22932.53763.71194.99441.5202
H93.12142.59402.59405.67256.48126.48122.22935.80465.03743.30262.10351.09454.6035
H105.67256.48126.48123.12142.59402.59405.80462.22935.03742.10353.30264.60351.0945
C113.58904.42724.42722.67393.25403.25403.71192.53763.30262.10351.28692.62801.3411
C122.67393.25403.25403.58904.42724.42722.53763.71192.10353.30261.28691.34112.6280
C132.16592.17142.17144.72955.70185.70181.52024.99441.09454.60352.62801.34113.9691
C144.72955.70185.70182.16592.17142.17144.99441.52024.60351.09451.34112.62803.9691

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 108.444 H1 C7 H3 108.444
H1 C7 C13 110.597 H2 C7 H3 107.500
H2 C7 C13 110.875 H3 C7 C13 110.875
H4 C8 H5 108.444 H4 C8 H6 108.444
H4 C8 C14 110.597 H5 C8 H6 107.500
H5 C8 C14 110.875 H6 C8 C14 110.875
C7 C13 H9 116.038 C7 C13 C12 124.853
C8 C14 H10 116.038 C8 C14 C11 124.853
H9 C13 C12 119.109 H10 C14 C11 119.109
C11 C12 C13 179.900 C12 C11 C14 179.900
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability