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: B3PW91/6-311G**

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 B3PW91/6-311G**
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-311G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-235.826969
Energy at 298.15K-235.839224
HF Energy-235.826969
Nuclear repulsion energy230.135324
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 B3PW91/6-311G**
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 3147 3030 56.47      
2 A 3128 3012 11.13      
3 A 3116 3002 12.13      
4 A 3106 2991 38.60      
5 A 3101 2986 59.82      
6 A 3078 2964 14.23      
7 A 3074 2960 20.82      
8 A 3057 2944 7.38      
9 A 3029 2918 45.24      
10 A 3027 2915 18.11      
11 A 3026 2914 32.08      
12 A 3007 2896 20.14      
13 A 1738 1674 2.67      
14 A 1503 1447 8.67      
15 A 1494 1439 8.73      
16 A 1490 1435 5.91      
17 A 1487 1432 1.29      
18 A 1477 1423 6.76      
19 A 1475 1420 0.91      
20 A 1433 1380 10.83      
21 A 1406 1354 3.83      
22 A 1398 1346 3.30      
23 A 1373 1322 0.12      
24 A 1322 1273 0.01      
25 A 1296 1249 1.27      
26 A 1287 1239 1.76      
27 A 1250 1204 0.14      
28 A 1168 1125 0.57      
29 A 1113 1072 0.94      
30 A 1064 1025 3.89      
31 A 1061 1021 0.46      
32 A 1057 1018 1.17      
33 A 1011 974 1.66      
34 A 1005 968 6.99      
35 A 923 889 4.41      
36 A 901 868 7.44      
37 A 872 839 4.43      
38 A 748 720 2.38      
39 A 717 691 36.00      
40 A 570 549 7.81      
41 A 473 455 1.05      
42 A 364 351 0.01      
43 A 285 275 0.04      
44 A 242 233 0.01      
45 A 200 192 0.03      
46 A 136 131 0.34      
47 A 92 88 0.01      
48 A 55 53 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 36187.8 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 34852.5 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 B3PW91/6-311G**
ABC
0.28521 0.04955 0.04567

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.485 0.940 -0.079
C2 1.995 -0.473 -0.137
C3 0.770 -0.927 0.136
C4 -0.435 -0.139 0.552
C5 -1.591 -0.250 -0.452
C6 -2.840 0.505 -0.008
H7 1.707 1.650 0.206
H8 3.306 1.036 0.641
H9 2.886 1.252 -1.050
H10 2.743 -1.207 -0.435
H11 0.603 -1.999 0.037
H12 -0.184 0.916 0.699
H13 -0.784 -0.508 1.526
H14 -1.253 0.126 -1.424
H15 -1.834 -1.309 -0.604
H16 -3.646 0.408 -0.741
H17 -3.214 0.125 0.949
H18 -2.634 1.572 0.119

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.49682.54433.17654.26295.34371.09121.09631.09612.19183.49242.78083.91984.05604.89806.19045.84825.1625
C21.49681.33472.54803.60704.93492.16992.14562.14541.08932.07322.71673.23943.54553.94725.74195.35475.0679
C32.54431.33471.49882.52583.88642.74303.24683.26052.07271.09012.15072.12692.76402.73434.69664.20014.2236
C43.17652.54801.49881.53452.55162.81253.92283.94063.49482.19211.09451.09942.15492.15893.50442.81942.8200
C54.26293.60702.52581.53451.52513.86295.18024.75994.43852.84842.15932.15161.09611.09702.17732.17622.1759
C65.34374.93493.88642.55161.52514.69446.20365.86795.85514.25762.77892.75782.16022.15751.09371.09501.0949
H71.09122.16992.74302.81253.86294.69441.76731.76783.10603.81682.08813.55133.70754.68535.57695.20534.3433
H81.09632.14563.24683.92285.18026.20361.76731.75622.55144.10983.49334.46145.08795.78577.11676.59085.9878
H91.09612.14543.26053.94064.75995.86791.76781.75622.53914.11873.54954.81744.30605.38836.59396.51715.6518
H102.19181.08932.07273.49484.43855.85513.10602.55142.53912.32983.79004.09574.32764.58126.59746.25886.0785
H113.49242.07321.09012.19212.84844.25763.81684.10984.11872.32983.09212.52343.17792.61294.94554.46284.8215
H122.78082.71672.15071.09452.15932.77892.08813.49333.54953.79003.09211.75342.50513.06113.78373.14102.6019
H133.91983.23942.12691.09942.15162.75783.55134.46144.81744.09572.52341.75343.05422.50613.76422.57633.1198
H144.05603.54552.76402.15491.09612.16023.70755.08794.30604.32763.17792.50513.05421.75172.50473.07822.5259
H154.89803.94722.73432.15891.09702.15754.68535.78575.38834.58122.61293.06112.50611.75172.50002.52433.0763
H166.19045.74194.69663.50442.17731.09375.57697.11676.59396.59744.94553.78373.76422.50472.50001.76671.7661
H175.84825.35474.20012.81942.17621.09505.20536.59086.51716.25884.46283.14102.57633.07822.52431.76671.7660
H185.16255.06794.22362.82002.17591.09494.34335.98785.65186.07854.82152.60193.11982.52593.07631.76611.7660

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 127.848 C1 C2 H10 114.973
C2 C1 H7 113.021 C2 C1 H8 110.721
C2 C1 H9 110.723 C2 C3 C4 128.032
C2 C3 H11 117.162 C3 C2 H10 117.177
C3 C4 C5 112.750 C3 C4 H12 111.100
C3 C4 H13 108.919 C4 C3 H11 114.800
C4 C5 C6 113.014 C4 C5 H14 108.856
C4 C5 H15 109.124 C5 C4 H12 109.297
C5 C4 H13 108.418 C5 C6 H16 111.423
C5 C6 H17 111.255 C5 C6 H18 111.240
C6 C5 H14 109.921 C6 C5 H15 109.660
H7 C1 H8 107.790 H7 C1 H9 107.845
H8 C1 H9 106.464 H12 C4 H13 106.105
H14 C5 H16 93.979 H16 C6 H17 107.643
H16 C6 H18 107.592 H17 C6 H18 107.491
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314      
2 C -0.164      
3 C -0.131      
4 C -0.240      
5 C -0.269      
6 C -0.330      
7 H 0.118      
8 H 0.130      
9 H 0.129      
10 H 0.107      
11 H 0.104      
12 H 0.121      
13 H 0.132      
14 H 0.130      
15 H 0.123      
16 H 0.122      
17 H 0.117      
18 H 0.116      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.040 0.214 -0.023 0.219
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.770 0.839 -0.604
y 0.839 -39.074 0.032
z -0.604 0.032 -41.085
Traceless
 xyz
x 1.309 0.839 -0.604
y 0.839 0.854 0.032
z -0.604 0.032 -2.163
Polar
3z2-r2-4.326
x2-y20.304
xy0.839
xz-0.604
yz0.032


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.627 0.663 -0.602
y 0.663 9.650 0.042
z -0.602 0.042 8.193


<r2> (average value of r2) Å2
<r2> 262.053
(<r2>)1/2 16.188