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 ((E)-2-Hexene)

using model chemistry: HSEh1PBE/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 (CS)

Jump to S1C2
Vibrational Frequencies calculated at HSEh1PBE/6-31G
Rotational Constants (cm-1) from geometry optimized at HSEh1PBE/6-31G
See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at HSEh1PBE/6-31G
 hartrees
Energy at 0K-235.516681
Energy at 298.15K-235.528984
HF Energy-235.516681
Nuclear repulsion energy226.190153
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 HSEh1PBE/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 3168 3030 59.40      
2 A 3152 3015 22.23      
3 A 3148 3011 38.38      
4 A 3143 3007 5.16      
5 A 3142 3005 53.91      
6 A 3112 2977 26.02      
7 A 3104 2969 20.26      
8 A 3078 2944 8.49      
9 A 3057 2924 32.31      
10 A 3053 2921 37.16      
11 A 3047 2914 40.35      
12 A 3026 2895 28.53      
13 A 1780 1702 0.34      
14 A 1553 1486 9.59      
15 A 1545 1477 8.63      
16 A 1540 1474 1.45      
17 A 1539 1472 12.37      
18 A 1526 1460 7.35      
19 A 1525 1459 5.07      
20 A 1463 1400 3.65      
21 A 1460 1396 6.60      
22 A 1412 1351 1.22      
23 A 1383 1323 0.69      
24 A 1370 1310 0.59      
25 A 1346 1288 0.17      
26 A 1333 1275 1.74      
27 A 1288 1232 0.01      
28 A 1215 1163 0.02      
29 A 1148 1098 2.76      
30 A 1132 1082 1.24      
31 A 1106 1058 0.10      
32 A 1094 1047 7.82      
33 A 1071 1024 5.53      
34 A 1025 981 40.11      
35 A 961 919 5.61      
36 A 929 889 3.57      
37 A 906 866 0.65      
38 A 810 774 1.38      
39 A 769 736 3.95      
40 A 546 523 0.23      
41 A 397 380 1.36      
42 A 319 305 0.78      
43 A 290 277 1.63      
44 A 243 232 0.05      
45 A 207 198 0.93      
46 A 145 138 0.37      
47 A 98 94 0.05      
48 A 76 73 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 36886.2 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 35285.3 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 HSEh1PBE/6-31G
ABC
0.50046 0.04009 0.03959

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 3.185 0.214 -0.158
C2 1.807 -0.370 -0.215
C3 0.740 0.111 0.434
C4 -0.643 -0.468 0.372
C5 -1.685 0.522 -0.175
C6 -3.098 -0.059 -0.188
H7 3.217 1.101 0.483
H8 3.911 -0.511 0.234
H9 3.539 0.505 -1.156
H10 1.686 -1.258 -0.838
H11 0.857 1.001 1.056
H12 -0.961 -0.783 1.379
H13 -0.640 -1.374 -0.250
H14 -1.391 0.820 -1.190
H15 -1.665 1.438 0.432
H16 -3.824 0.661 -0.581
H17 -3.148 -0.960 -0.811
H18 -3.418 -0.338 0.824

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.49732.51793.92394.87966.28901.09501.09791.09792.20802.74104.53224.14234.73035.03717.03596.47376.6979
C21.49731.33832.52123.60424.91512.15362.15562.15571.09172.09703.22062.64543.54923.96795.73635.02565.3272
C32.51791.33831.50002.53363.89152.66843.23763.24272.09401.09262.14082.13902.77182.74714.70754.22014.1997
C43.92392.52121.50001.53782.55124.16804.55594.55672.74052.20791.10191.09912.15892.16363.50742.81372.8144
C54.87963.60422.53361.53781.52784.97975.70495.31463.86892.86492.15472.16601.09811.09942.18172.17692.1770
C66.28904.91513.89152.55121.52786.45567.03606.73044.97454.27942.74722.78862.16602.16261.09531.09661.0967
H71.09502.15362.66844.16804.97976.45561.77271.77293.10712.43084.66974.64114.91074.89437.13466.81426.7975
H81.09792.15563.23764.55595.70497.03601.77271.76102.58003.50545.01164.65705.64915.91037.86537.14977.3542
H91.09792.15573.24274.55675.31466.73041.77291.76102.57713.51135.32214.67014.94005.52027.38646.85367.2812
H102.20801.09172.09402.74053.86894.97453.10712.58002.57713.06223.48462.40173.72994.48465.83994.84305.4455
H112.74102.09701.09262.20792.86494.27942.43083.50543.51133.06222.56713.09633.18362.63504.97094.83434.4854
H124.53223.22062.14081.10192.15472.74724.66975.01165.32213.48462.56711.76213.05912.51513.75843.10022.5581
H134.14232.64542.13901.09912.16602.78864.64114.65704.67012.40173.09631.76212.50293.06983.79312.60323.1532
H144.73033.54922.77182.15891.09812.16604.91075.64914.94003.72993.18363.05912.50291.75772.51282.52943.0829
H155.03713.96792.74712.16361.09942.16264.89435.91035.52024.48462.63502.51513.06981.75772.50823.08092.5252
H167.03595.73634.70753.50742.18171.09537.13467.86537.38645.83994.97093.75843.79312.51282.50821.77051.7710
H176.47375.02564.22012.81372.17691.09666.81427.14976.85364.84304.83433.10022.60322.52943.08091.77051.7698
H186.69795.32724.19972.81442.17701.09676.79757.35427.28125.44554.48542.55813.15323.08292.52521.77101.7698

picture of (E)-2-Hexene state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 125.146 C1 C2 H10 116.173
C2 C1 H7 111.410 C2 C1 H8 111.398
C2 C1 H9 111.405 C2 C3 C4 125.227
C2 C3 H11 118.883 C3 C2 H10 118.681
C3 C4 C5 113.025 C3 C4 H12 109.787
C3 C4 H13 109.806 C4 C3 H11 115.887
C4 C5 C6 112.652 C4 C5 H14 108.831
C4 C5 H15 109.119 C5 C4 H12 108.296
C5 C4 H13 109.329 C5 C6 H16 111.489
C5 C6 H17 111.027 C5 C6 H18 111.025
C6 C5 H14 110.072 C6 C5 H15 109.725
H7 C1 H8 107.873 H7 C1 H9 107.892
H8 C1 H9 106.642 H12 C4 H13 106.371
H14 C5 H15 106.230 H16 C6 H17 107.754
H16 C6 H18 107.789 H17 C6 H18 107.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.541      
2 C -0.124      
3 C -0.103      
4 C -0.361      
5 C -0.304      
6 C -0.485      
7 H 0.168      
8 H 0.172      
9 H 0.172      
10 H 0.144      
11 H 0.141      
12 H 0.163      
13 H 0.158      
14 H 0.164      
15 H 0.156      
16 H 0.161      
17 H 0.160      
18 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.040 0.033 -0.050 0.072
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.235 0.038 -0.664
y 0.038 -39.473 1.230
z -0.664 1.230 -39.804
Traceless
 xyz
x 1.403 0.038 -0.664
y 0.038 -0.454 1.230
z -0.664 1.230 -0.949
Polar
3z2-r2-1.899
x2-y21.238
xy0.038
xz-0.664
yz1.230


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.856 -0.279 -0.991
y -0.279 8.098 0.748
z -0.991 0.748 7.858


<r2> (average value of r2) Å2
<r2> 295.927
(<r2>)1/2 17.203