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

Conformer 2 (C1)

Jump to S1C1
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-235.764421
Energy at 298.15K-235.776515
HF Energy-235.764421
Nuclear repulsion energy227.961326
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 BLYP/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 3052 3040 70.60      
2 A 3032 3020 14.35      
3 A 3022 3010 15.96      
4 A 3008 2996 47.04      
5 A 3004 2993 71.25      
6 A 2982 2970 14.27      
7 A 2970 2958 27.98      
8 A 2962 2950 12.72      
9 A 2947 2935 40.86      
10 A 2939 2927 16.16      
11 A 2938 2927 42.90      
12 A 2913 2902 25.26      
13 A 1659 1653 2.40      
14 A 1476 1470 5.93      
15 A 1466 1461 7.12      
16 A 1462 1456 4.57      
17 A 1458 1452 0.93      
18 A 1450 1444 5.64      
19 A 1447 1441 0.54      
20 A 1396 1391 10.70      
21 A 1377 1371 1.11      
22 A 1371 1366 3.57      
23 A 1335 1329 0.83      
24 A 1292 1287 0.08      
25 A 1272 1267 2.83      
26 A 1259 1254 2.00      
27 A 1224 1219 0.22      
28 A 1137 1133 0.69      
29 A 1076 1072 0.56      
30 A 1034 1030 1.58      
31 A 1031 1027 1.10      
32 A 1007 1003 3.83      
33 A 973 969 0.39      
34 A 964 960 7.65      
35 A 887 884 2.84      
36 A 868 865 6.48      
37 A 849 846 3.98      
38 A 734 732 1.64      
39 A 693 690 31.52      
40 A 560 558 6.96      
41 A 457 455 0.86      
42 A 355 354 0.01      
43 A 278 276 0.04      
44 A 235 234 0.00      
45 A 197 196 0.03      
46 A 134 134 0.29      
47 A 89 89 0.02      
48 A 55 55 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 35161.2 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 35024.1 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 BLYP/6-311G**
ABC
0.27999 0.04847 0.04468

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.513 0.950 -0.078
C2 2.016 -0.476 -0.140
C3 0.782 -0.936 0.136
C4 -0.438 -0.145 0.558
C5 -1.610 -0.252 -0.456
C6 -2.873 0.512 -0.007
H7 1.733 1.665 0.212
H8 3.341 1.044 0.644
H9 2.915 1.267 -1.055
H10 2.769 -1.211 -0.442
H11 0.614 -2.014 0.035
H12 -0.189 0.915 0.711
H13 -0.791 -0.524 1.535
H14 -1.271 0.127 -1.433
H15 -1.858 -1.316 -0.610
H16 -3.682 0.414 -0.745
H17 -3.250 0.131 0.955
H18 -2.665 1.586 0.119

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.51162.56873.21114.31125.40351.09731.10291.10272.20653.52192.81493.96064.10254.95186.25365.91125.2203
C21.51161.34532.57233.64634.98872.18852.16422.16421.09522.08822.74253.26853.58323.99125.79855.41205.1211
C32.56871.34531.51322.55683.93302.77043.27563.28932.08831.09602.16782.14462.79402.76914.74594.24964.2703
C43.21112.57231.51321.55352.58432.84803.96293.97963.52462.20701.10041.10572.17572.17963.54062.85292.8545
C54.31123.64632.55681.55351.54253.91155.23514.81074.48332.87892.17872.17041.10201.10292.19572.19652.1961
C65.40354.98873.93302.58431.54254.75276.27035.92965.91524.30512.80732.79052.17852.17591.10001.10111.1010
H71.09732.18852.77042.84803.91154.75271.77721.77783.12663.84982.12253.59313.75454.73895.63955.26614.3995
H81.10292.16423.27563.96295.23516.27031.77721.76542.56764.14293.53314.50825.14095.84587.18706.66106.0531
H91.10272.16423.28933.97964.81075.92961.77781.76542.55694.15283.58844.86264.35485.44506.65906.58255.7109
H102.20651.09522.08833.52464.48335.91523.12662.56762.55692.34933.82154.12974.37044.63156.66006.32306.1375
H113.52192.08821.09602.20702.87894.30513.84984.14294.15282.34933.11182.53863.20812.64764.99564.51354.8696
H122.81492.74252.16781.10042.17872.80732.12253.53313.58843.82153.11181.76402.52823.08403.81783.16902.6325
H133.96063.26852.14461.10572.17042.79053.59314.50824.86264.12972.53861.76403.07702.52383.80042.61033.1572
H144.10253.58322.79402.17571.10202.17853.75455.14094.35484.37043.20812.52823.07701.76242.52353.10112.5457
H154.95183.99122.76912.17961.10292.17594.73895.84585.44504.63152.64763.08402.52381.76242.51802.54543.0991
H166.25365.79854.74593.54062.19571.10005.63957.18706.65906.66004.99563.81783.80042.52352.51801.77691.7763
H175.91125.41204.24962.85292.19651.10115.26616.66106.58256.32304.51353.16902.61033.10112.54541.77691.7764
H185.22035.12114.27032.85452.19611.10104.39956.05315.71096.13754.86962.63253.15722.54573.09911.77631.7764

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 127.986 C1 C2 H10 114.710
C2 C1 H7 113.086 C2 C1 H8 110.769
C2 C1 H9 110.780 C2 C3 C4 128.178
C2 C3 H11 117.233 C3 C2 H10 117.302
C3 C4 C5 112.960 C3 C4 H12 111.094
C3 C4 H13 108.954 C4 C3 H11 114.582
C4 C5 C6 113.171 C4 C5 H14 108.842
C4 C5 H15 109.088 C5 C4 H12 109.160
C5 C4 H13 108.229 C5 C6 H16 111.289
C5 C6 H17 111.284 C5 C6 H18 111.255
C6 C5 H14 109.812 C6 C5 H15 109.559
H7 C1 H8 107.754 H7 C1 H9 107.821
H8 C1 H9 106.338 H12 C4 H13 106.180
H14 C5 H16 93.939 H16 C6 H17 107.663
H16 C6 H18 107.619 H17 C6 H18 107.542
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.270      
2 C -0.133      
3 C -0.103      
4 C -0.188      
5 C -0.214      
6 C -0.283      
7 H 0.099      
8 H 0.110      
9 H 0.110      
10 H 0.085      
11 H 0.080      
12 H 0.097      
13 H 0.106      
14 H 0.107      
15 H 0.100      
16 H 0.102      
17 H 0.097      
18 H 0.097      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.029 0.196 -0.016 0.199
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.792 0.812 -0.529
y 0.812 -40.041 0.003
z -0.529 0.003 -41.828
Traceless
 xyz
x 1.143 0.812 -0.529
y 0.812 0.769 0.003
z -0.529 0.003 -1.912
Polar
3z2-r2-3.823
x2-y20.249
xy0.812
xz-0.529
yz0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.295 0.655 -0.608
y 0.655 10.064 0.052
z -0.608 0.052 8.480


<r2> (average value of r2) Å2
<r2> 267.707
(<r2>)1/2 16.362