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 C6H12 ((Z)-hex-2-ene)

using model chemistry: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C1 1A

Conformer 1 (C1)

Jump to S1C2
Vibrational Frequencies calculated at B3LYP/6-31G**
Rotational Constants (cm-1) from geometry optimized at B3LYP/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-235.869202
Energy at 298.15K-235.881458
HF Energy-235.869202
Nuclear repulsion energy229.325346
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/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 A 3152 3029 63.21      
2 A 3134 3011 11.06      
3 A 3123 3000 13.37      
4 A 3111 2989 39.83      
5 A 3106 2984 60.42      
6 A 3082 2961 17.83      
7 A 3075 2955 25.42      
8 A 3062 2942 8.36      
9 A 3037 2918 36.65      
10 A 3031 2912 22.28      
11 A 3030 2911 34.44      
12 A 3007 2889 24.53      
13 A 1746 1677 1.71      
14 A 1524 1464 3.55      
15 A 1514 1455 5.81      
16 A 1510 1451 3.48      
17 A 1506 1447 0.66      
18 A 1497 1439 4.30      
19 A 1494 1436 0.21      
20 A 1448 1391 8.80      
21 A 1427 1371 1.00      
22 A 1418 1363 3.78      
23 A 1388 1333 0.48      
24 A 1331 1279 0.03      
25 A 1309 1258 4.42      
26 A 1298 1247 3.54      
27 A 1262 1212 0.17      
28 A 1176 1130 0.87      
29 A 1117 1073 0.58      
30 A 1068 1026 1.55      
31 A 1066 1025 0.42      
32 A 1054 1013 2.09      
33 A 1014 974 0.56      
34 A 1003 963 6.82      
35 A 920 884 2.82      
36 A 901 866 5.75      
37 A 876 842 3.55      
38 A 753 723 1.72      
39 A 720 692 25.10      
40 A 573 550 7.56      
41 A 470 451 0.73      
42 A 366 351 0.02      
43 A 288 277 0.04      
44 A 246 237 0.01      
45 A 202 194 0.04      
46 A 139 133 0.28      
47 A 93 90 0.01      
48 A 55 53 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 36359.3 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 34934.0 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 B3LYP/6-31G**
ABC
0.28521 0.04900 0.04519

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.504 0.938 -0.082
C2 2.004 -0.478 -0.134
C3 0.772 -0.926 0.139
C4 -0.437 -0.129 0.550
C5 -1.602 -0.255 -0.451
C6 -2.856 0.505 -0.008
H7 1.730 1.655 0.200
H8 3.328 1.035 0.637
H9 2.906 1.245 -1.056
H10 2.750 -1.216 -0.426
H11 0.598 -1.999 0.045
H12 -0.186 0.929 0.681
H13 -0.784 -0.484 1.532
H14 -1.270 0.111 -1.431
H15 -1.845 -1.317 -0.590
H16 -3.666 0.398 -0.737
H17 -3.224 0.136 0.955
H18 -2.651 1.576 0.106

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.50292.55413.19234.29225.37801.09231.09761.09742.19563.50342.79673.93014.09304.92526.22825.87715.1981
C21.50291.33842.55833.62644.95912.17582.15322.15271.09022.07822.72723.24773.57033.96495.76815.37535.0930
C32.55411.33841.50492.53693.90252.75303.25903.27052.07791.09102.15682.13482.77712.74464.71344.21494.2398
C43.19232.55831.50491.54102.56202.82843.94133.95553.50622.19581.09561.10072.16212.16573.51562.82932.8294
C54.29223.62642.53691.54101.53103.89505.21044.78984.45752.85102.16522.15711.09721.09822.18332.18212.1819
C65.37804.95913.90252.56201.53104.73196.23935.90305.87914.26612.78962.76442.16572.16301.09481.09611.0960
H71.09232.17582.75302.82843.89504.73191.76861.76923.11073.82772.10443.55973.74754.71495.61855.23674.3825
H81.09762.15323.25903.94135.21046.23931.76861.75782.55584.12333.51544.47395.12565.81277.15536.62106.0264
H91.09742.15273.27053.95554.78985.90301.76921.75782.54554.13033.56104.82824.34425.41796.63406.54715.6873
H102.19561.09022.07793.50624.45755.87913.11072.55582.54552.33773.80154.10674.35184.59916.62346.27976.1035
H113.50342.07821.09102.19582.85104.26613.82774.12334.13032.33773.09702.53333.18102.61444.95354.47194.8308
H122.79672.72722.15681.09562.16522.78962.10443.51543.56103.80153.09701.75502.51093.06753.79483.15232.6124
H133.93013.24772.13481.10072.15712.76443.55974.47394.82824.10672.53331.75503.06082.51373.77232.58283.1243
H144.09303.57032.77712.16211.09722.16573.74755.12564.34424.35183.18102.51093.06081.75372.51003.08412.5323
H154.92523.96492.74462.16571.09822.16304.71495.81275.41794.59912.61443.06752.51371.75372.50582.52983.0822
H166.22825.76814.71343.51562.18331.09485.61857.15536.63406.62344.95353.79483.77232.51002.50581.76871.7682
H175.87715.37534.21492.82932.18211.09615.23676.62106.54716.27974.47193.15232.58283.08412.52981.76871.7674
H185.19815.09304.23982.82942.18191.09604.38256.02645.68736.10354.83082.61243.12432.53233.08221.76821.7674

picture of (Z)-hex-2-ene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 127.943 C1 C2 H10 114.777
C2 C1 H7 112.991 C2 C1 H8 110.824
C2 C1 H9 110.795 C2 C3 C4 128.153
C2 C3 H11 117.254 C3 C2 H10 117.279
C3 C4 C5 112.786 C3 C4 H12 111.093
C3 C4 H13 109.042 C4 C3 H11 114.586
C4 C5 C6 113.018 C4 C5 H14 108.918
C4 C5 H15 109.140 C5 C4 H12 109.246
C5 C4 H13 108.331 C5 C6 H16 111.413
C5 C6 H17 111.243 C5 C6 H18 111.230
C6 C5 H14 109.881 C6 C5 H15 109.606
H7 C1 H8 107.733 H7 C1 H9 107.796
H8 C1 H9 106.418 H12 C4 H13 106.086
H14 C5 H16 93.946 H16 C6 H17 107.667
H16 C6 H18 107.628 H17 C6 H18 107.466
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.351      
2 C -0.070      
3 C -0.061      
4 C -0.203      
5 C -0.171      
6 C -0.318      
7 H 0.108      
8 H 0.115      
9 H 0.114      
10 H 0.077      
11 H 0.073      
12 H 0.091      
13 H 0.099      
14 H 0.099      
15 H 0.093      
16 H 0.101      
17 H 0.102      
18 H 0.102      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.034 0.190 -0.016 0.193
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.577 0.725 -0.534
y 0.725 -38.900 0.036
z -0.534 0.036 -40.602
Traceless
 xyz
x 1.175 0.725 -0.534
y 0.725 0.689 0.036
z -0.534 0.036 -1.864
Polar
3z2-r2-3.728
x2-y20.324
xy0.725
xz-0.534
yz0.036


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.878 0.668 -0.659
y 0.668 9.041 0.024
z -0.659 0.024 7.433


<r2> (average value of r2) Å2
<r2> 264.179
(<r2>)1/2 16.254