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: MP2=FULL/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 MP2=FULL/6-31G**
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-235.085796
Energy at 298.15K-235.098104
HF Energy-234.198295
Nuclear repulsion energy227.309384
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=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3231 3019 42.63      
2 A 3224 3012 30.83      
3 A 3222 3010 42.73      
4 A 3218 3006 4.39      
5 A 3212 3002 15.62      
6 A 3199 2989 21.22      
7 A 3182 2974 22.32      
8 A 3157 2950 5.28      
9 A 3126 2921 42.66      
10 A 3125 2920 15.57      
11 A 3118 2913 29.14      
12 A 3101 2898 20.87      
13 A 1767 1651 0.42      
14 A 1568 1466 3.42      
15 A 1562 1460 4.83      
16 A 1557 1455 7.19      
17 A 1552 1450 0.43      
18 A 1541 1440 4.63      
19 A 1536 1436 1.54      
20 A 1468 1372 1.59      
21 A 1466 1370 1.60      
22 A 1434 1340 0.89      
23 A 1382 1291 1.07      
24 A 1370 1280 0.37      
25 A 1353 1264 0.08      
26 A 1327 1240 5.91      
27 A 1294 1209 0.72      
28 A 1216 1136 0.07      
29 A 1151 1076 1.11      
30 A 1135 1060 0.91      
31 A 1096 1024 1.92      
32 A 1094 1022 0.58      
33 A 1071 1001 4.36      
34 A 1020 953 26.66      
35 A 955 893 3.69      
36 A 931 869 2.08      
37 A 895 836 0.35      
38 A 779 728 0.38      
39 A 758 708 1.68      
40 A 544 508 0.11      
41 A 395 369 1.12      
42 A 317 296 0.69      
43 A 292 273 1.08      
44 A 260 243 0.02      
45 A 205 192 0.63      
46 A 148 138 0.25      
47 A 96 90 0.03      
48 A 77 72 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 37362.3 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 34911.3 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=FULL/6-31G**
ABC
0.48923 0.04071 0.04027

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 3.161 0.228 -0.165
C2 1.785 -0.354 -0.245
C3 0.737 0.070 0.472
C4 -0.646 -0.495 0.374
C5 -1.660 0.526 -0.144
C6 -3.074 -0.035 -0.214
H7 3.195 1.047 0.551
H8 3.890 -0.522 0.143
H9 3.485 0.609 -1.133
H10 1.642 -1.180 -0.935
H11 0.875 0.897 1.162
H12 -0.975 -0.847 1.356
H13 -0.639 -1.366 -0.286
H14 -1.343 0.864 -1.132
H15 -1.644 1.406 0.502
H16 -3.778 0.706 -0.588
H17 -3.115 -0.899 -0.875
H18 -3.413 -0.353 0.771

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.49612.51143.91194.82996.24031.08811.09011.09012.20932.72684.53554.12264.65024.99196.96856.41536.6653
C21.49611.33872.51223.55694.86932.14132.14662.14641.08572.09163.22812.62723.47203.92605.67384.96995.2960
C32.51141.33871.49642.51603.87292.64713.22483.22802.08831.08682.13332.12772.74362.73004.68094.19334.1815
C43.91192.51221.49641.52932.54004.14284.54134.53342.72372.20731.09411.09242.14452.15073.48972.79602.7989
C54.82993.55692.51601.52931.52284.93215.65485.23953.80002.87542.14612.15411.09111.09202.17192.16392.1642
C66.24034.86933.87292.54001.52286.40756.98956.65394.90654.28402.74412.77532.15552.15251.08841.08911.0891
H71.08812.14132.64714.14284.93216.40751.76361.76373.09492.40444.65044.60714.84364.85277.07416.75546.7584
H81.09012.14663.22484.54135.65486.98951.76361.75302.57793.48465.02364.62685.56115.87077.79997.08787.3312
H91.09012.14643.22804.53345.23956.65391.76371.75302.57573.48775.31074.65054.83455.44197.28436.77457.2200
H102.20931.08572.08832.72373.80004.90653.09492.57792.57573.05023.49412.37963.62304.42185.74984.76565.3989
H112.72682.09161.08682.20732.87544.28402.40443.48463.48773.05022.55013.08403.19112.65274.97484.82634.4833
H124.53553.22812.13331.09412.14612.74414.65045.02365.31073.49412.55011.75393.04192.50073.74833.09162.5555
H134.12262.62722.12771.09242.15412.77534.60714.62684.65052.37963.08401.75392.48603.05163.77292.58673.1358
H144.65023.47202.74362.14451.09112.15554.84365.56114.83453.62303.19113.04192.48601.74842.50052.51243.0638
H154.99193.92602.73002.15071.09202.15254.85275.87075.44194.42182.65272.50073.05161.74842.49683.06182.5092
H166.96855.67384.68093.48972.17191.08847.07417.79997.28435.74984.97483.74833.77292.50052.49681.76061.7609
H176.41534.96994.19332.79602.16391.08916.75547.08786.77454.76564.82633.09162.58672.51243.06181.76061.7595
H186.66535.29604.18152.79892.16421.08916.75847.33127.22005.39894.48332.55553.13583.06382.50921.76091.7595

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 124.643 C1 C2 H10 116.784
C2 C1 H7 110.926 C2 C1 H8 111.237
C2 C1 H9 111.215 C2 C3 C4 124.684
C2 C3 H11 118.789 C3 C2 H10 118.572
C3 C4 C5 112.510 C3 C4 H12 109.907
C3 C4 H13 109.558 C4 C3 H11 116.511
C4 C5 C6 112.657 C4 C5 H14 108.697
C4 C5 H15 109.131 C5 C4 H12 108.655
C5 C4 H13 109.367 C5 C6 H16 111.477
C5 C6 H17 110.794 C5 C6 H18 110.818
C6 C5 H14 110.002 C6 C5 H15 109.720
H7 C1 H8 108.127 H7 C1 H9 108.132
H8 C1 H9 107.041 H12 C4 H13 106.670
H14 C5 H15 106.434 H16 C6 H17 107.909
H16 C6 H18 107.938 H17 C6 H18 107.758
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability