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/6-311G**

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/6-311G**
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-311G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2=FULL/6-311G**
 hartrees
Energy at 0K-235.246776
Energy at 298.15K-235.259023
HF Energy-234.237824
Nuclear repulsion energy226.786617
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/6-311G**
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 3178 3015 44.00      
2 A 3167 3004 31.95      
3 A 3164 3002 48.59      
4 A 3163 3001 9.23      
5 A 3161 2998 8.35      
6 A 3144 2983 19.32      
7 A 3132 2971 17.93      
8 A 3108 2949 3.63      
9 A 3078 2920 40.07      
10 A 3075 2917 22.88      
11 A 3070 2912 30.98      
12 A 3057 2900 19.70      
13 A 1732 1643 0.57      
14 A 1525 1447 6.03      
15 A 1520 1441 6.26      
16 A 1515 1437 10.36      
17 A 1509 1431 0.81      
18 A 1497 1420 5.79      
19 A 1494 1418 2.66      
20 A 1428 1355 2.08      
21 A 1427 1354 3.13      
22 A 1402 1330 0.55      
23 A 1350 1280 1.13      
24 A 1341 1272 0.40      
25 A 1323 1255 0.17      
26 A 1297 1230 3.37      
27 A 1265 1200 0.67      
28 A 1194 1132 0.07      
29 A 1132 1074 1.45      
30 A 1121 1063 1.57      
31 A 1081 1026 0.89      
32 A 1072 1017 0.89      
33 A 1052 998 4.81      
34 A 994 943 35.73      
35 A 939 890 4.45      
36 A 917 870 1.87      
37 A 881 836 0.31      
38 A 770 730 0.35      
39 A 750 711 1.46      
40 A 538 510 0.10      
41 A 392 372 1.26      
42 A 311 295 0.79      
43 A 287 273 1.28      
44 A 250 237 0.03      
45 A 206 195 0.68      
46 A 146 138 0.33      
47 A 92 87 0.05      
48 A 77 73 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 36661.7 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 34777.3 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/6-311G**
ABC
0.48360 0.04062 0.04019

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 3.165 0.231 -0.165
C2 1.785 -0.351 -0.251
C3 0.738 0.060 0.479
C4 -0.648 -0.502 0.372
C5 -1.659 0.530 -0.140
C6 -3.077 -0.030 -0.218
H7 3.201 1.040 0.569
H8 3.896 -0.530 0.126
H9 3.483 0.632 -1.133
H10 1.636 -1.167 -0.959
H11 0.881 0.877 1.188
H12 -0.981 -0.861 1.356
H13 -0.642 -1.369 -0.300
H14 -1.336 0.875 -1.128
H15 -1.641 1.406 0.520
H16 -3.783 0.717 -0.591
H17 -3.114 -0.894 -0.888
H18 -3.419 -0.357 0.769

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.50002.51663.91954.83286.24741.09311.09511.09512.21872.73224.54854.13144.64734.99446.97756.41966.6753
C21.50001.34082.51603.55664.87272.14812.15172.15141.09062.09703.23872.63223.46603.92675.67964.97015.3028
C32.51661.34081.49912.51963.87902.65303.23183.23472.09251.09172.13772.13342.74752.73384.69194.19724.1875
C43.91952.51601.49911.53262.54374.15154.55054.54082.72582.21471.09851.09702.14942.15603.49862.79712.8028
C54.83283.55662.51961.53261.52694.93815.66125.23823.79542.88682.15202.15991.09581.09662.17942.16952.1703
C66.24744.87273.87902.54371.52696.41746.99916.65694.90424.29702.74962.77982.16332.16081.09351.09441.0944
H71.09312.14812.65304.15154.93816.41741.77331.77323.10772.40734.66084.61854.84744.85657.08736.76396.7688
H81.09512.15173.23184.55055.66126.99911.77331.76252.58673.49275.03984.63435.56055.87887.81237.09227.3448
H91.09512.15143.23474.54085.23826.65691.77321.76252.58433.49615.32444.65984.82545.43977.28706.77597.2273
H102.21871.09062.09252.72583.79544.90423.10772.58672.58433.05933.50662.37983.60934.42095.74864.75815.4029
H112.73222.09701.09172.21472.88684.29702.40733.49273.49613.05932.55243.09493.20642.66204.99404.83824.4926
H124.54853.23872.13771.09852.15202.74964.66085.03985.32443.50662.55241.76443.05122.50503.75913.09622.5578
H134.13142.63222.13341.09702.15992.77984.61854.63434.65982.37983.09491.76442.49013.06103.78152.58493.1429
H144.64733.46602.74752.14941.09582.16334.84745.56054.82543.60933.20643.05122.49011.75852.51042.51963.0751
H154.99443.92672.73382.15601.09662.16084.85655.87885.43974.42092.66202.50503.06101.75852.50913.07312.5160
H166.97755.67964.69193.49862.17941.09357.08737.81237.28705.74864.99403.75913.78152.51042.50911.76991.7706
H176.41964.97014.19722.79712.16951.09446.76397.09226.77594.75814.83823.09622.58492.51963.07311.76991.7690
H186.67535.30284.18752.80282.17031.09446.76887.34487.22735.40294.49262.55783.14293.07512.51601.77061.7690

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 124.628 C1 C2 H10 116.963
C2 C1 H7 110.894 C2 C1 H8 111.061
C2 C1 H9 111.043 C2 C3 C4 124.639
C2 C3 H11 118.741 C3 C2 H10 118.409
C3 C4 C5 112.413 C3 C4 H12 109.795
C3 C4 H13 109.551 C4 C3 H11 116.601
C4 C5 C6 112.491 C4 C5 H14 108.585
C4 C5 H15 109.049 C5 C4 H12 108.632
C5 C4 H13 109.335 C5 C6 H16 111.483
C5 C6 H17 110.640 C5 C6 H18 110.696
C6 C5 H14 110.058 C6 C5 H15 109.816
H7 C1 H8 108.269 H7 C1 H9 108.262
H8 C1 H9 107.169 H12 C4 H13 106.960
H14 C5 H15 106.661 H16 C6 H17 107.989
H16 C6 H18 108.048 H17 C6 H18 107.851
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability