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 C6H8 (Bicyclo[3.1.0]hex-2-ene)

using model chemistry: MP2/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-38.316703
Energy at 298.15K-38.325748
HF Energy-37.536998
Nuclear repulsion energy118.071918
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/CEP-121G*
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 3255 3101 16.46      
2 A 3228 3075 22.45      
3 A 3213 3062 23.77      
4 A 3207 3055 16.16      
5 A 3201 3050 0.39      
6 A 3147 2999 18.30      
7 A 3106 2960 24.88      
8 A 3056 2912 45.67      
9 A 1621 1544 3.15      
10 A 1519 1448 3.22      
11 A 1510 1438 2.63      
12 A 1396 1331 3.78      
13 A 1390 1324 1.56      
14 A 1338 1274 1.82      
15 A 1309 1247 0.04      
16 A 1219 1161 3.62      
17 A 1197 1141 1.22      
18 A 1136 1083 1.50      
19 A 1117 1064 1.81      
20 A 1101 1049 0.70      
21 A 1086 1035 7.50      
22 A 1061 1011 8.89      
23 A 1031 982 2.97      
24 A 1002 955 1.84      
25 A 955 910 6.41      
26 A 936 892 3.39      
27 A 903 860 5.12      
28 A 890 848 0.88      
29 A 824 786 11.16      
30 A 786 749 14.24      
31 A 772 736 0.59      
32 A 724 690 52.87      
33 A 674 642 1.85      
34 A 478 456 7.37      
35 A 350 333 0.70      
36 A 276 263 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 27005.7 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 25731.0 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/CEP-121G*
ABC
0.20753 0.14949 0.10612

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.630 -0.782 -0.391
C2 -0.822 -1.137 -0.047
C3 0.735 0.748 -0.451
C4 1.438 -0.038 0.656
C5 -1.474 0.221 0.194
C6 -0.627 1.245 -0.077
H7 1.171 -1.390 -1.111
H8 -1.307 -1.667 -0.879
H9 -0.885 -1.787 0.836
H10 1.332 1.257 -1.204
H11 1.024 0.052 1.659
H12 2.520 -0.131 0.600
H13 -2.496 0.336 0.550
H14 -0.877 2.301 0.011

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.53321.53421.51712.40242.40501.08722.18502.19302.30442.24782.23113.45033.4542
C21.53322.47722.60911.52492.38922.27301.09941.09913.42112.78103.54942.30843.4381
C31.53422.47721.52832.36061.49742.27963.19143.27201.08752.24052.25023.40742.2852
C41.51712.60911.52832.95922.53852.24083.54192.91332.26861.08871.08773.95273.3524
C52.40241.52492.36062.95921.35593.36052.17782.18893.30152.90114.02981.08862.1717
C62.40502.38921.49742.53851.35593.35343.09583.17682.26022.67633.50072.17041.0887
H71.08722.27302.27962.24083.36053.35342.50442.85882.65373.12622.51644.38034.3675
H82.18501.09943.19143.54192.17783.09582.50441.77033.95213.85164.38122.73304.0891
H92.19301.09913.27202.91332.18893.17682.85881.77034.28282.77603.79352.68094.1703
H102.30443.42111.08752.26863.30152.26022.65373.95214.28283.12152.56784.31012.7284
H112.24782.78102.24051.08872.90112.67633.12623.85162.77603.12151.84153.70183.3741
H122.23113.54942.25021.08774.02983.50072.51644.38123.79352.56781.84155.03784.2186
H133.45032.30843.40743.95271.08862.17044.38032.73302.68094.31013.70185.03782.6022
H143.45423.43812.28523.35242.17171.08874.36754.08914.17032.72843.37414.21862.6022

picture of Bicyclo[3.1.0]hex-2-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 103.548 C1 C2 H8 111.124
C1 C2 H9 111.785 C1 C3 C4 59.388
C1 C3 C6 104.986 C1 C3 H10 122.110
C1 C4 C3 60.500 C1 C4 H11 118.293
C1 C4 H12 116.905 C2 C1 C3 107.724
C2 C1 C4 117.602 C2 C1 H7 119.347
C2 C5 C6 111.930 C2 C5 H13 123.213
C3 C1 C4 60.112 C3 C1 H7 119.865
C3 C4 H11 116.773 C3 C4 H12 117.686
C3 C6 C5 111.551 C3 C6 H14 123.404
C4 C1 H7 117.788 C4 C3 C6 114.066
C4 C3 H10 119.327 C5 C2 H8 111.131
C5 C2 H9 112.045 C5 C6 H14 124.977
C6 C3 H10 121.128 C6 C5 H13 124.855
H8 C2 H9 107.274 H11 C4 H12 115.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability