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All results from a given calculation for C6H8 (3-Methylenecyclopentene)

using model chemistry: MP2/CEP-31G*

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-31G*
 hartrees
Energy at 0K-38.252019
Energy at 298.15K-38.260260
HF Energy-37.534755
Nuclear repulsion energy112.496536
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-31G*
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 3273 3107 14.84      
2 A 3238 3074 15.62      
3 A 3209 3047 2.51      
4 A 3185 3024 8.09      
5 A 3177 3016 32.01      
6 A 3149 2990 18.73      
7 A 3103 2946 26.31      
8 A 3085 2929 40.09      
9 A 1712 1626 10.44      
10 A 1627 1545 0.84      
11 A 1526 1449 3.42      
12 A 1497 1421 2.32      
13 A 1466 1392 0.86      
14 A 1376 1306 1.35      
15 A 1354 1285 2.83      
16 A 1314 1247 0.44      
17 A 1273 1209 0.73      
18 A 1254 1190 1.27      
19 A 1185 1125 1.95      
20 A 1112 1056 1.30      
21 A 1037 984 7.00      
22 A 1025 973 2.76      
23 A 962 914 2.75      
24 A 955 907 4.36      
25 A 929 882 5.41      
26 A 883 838 1.85      
27 A 840 797 2.21      
28 A 804 763 6.29      
29 A 793 752 100.12      
30 A 742 705 8.47      
31 A 673 639 14.62      
32 A 619 588 1.89      
33 A 484 460 14.67      
34 A 339 322 0.60      
35 A 289 274 1.73      
36 A 89 85 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 26787.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 25432.3 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/CEP-31G*
ABC
0.23660 0.11231 0.07902

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.115 -1.180 0.139
H2 -0.151 -1.989 -0.563
H3 0.065 -1.586 1.166
C4 1.537 -0.589 -0.131
H5 1.889 -0.831 -1.153
H6 2.293 -0.974 0.578
C7 -2.209 -0.023 -0.086
H8 -2.797 0.900 -0.142
H9 -2.752 -0.975 -0.122
C10 -0.840 0.019 0.024
C11 1.330 0.919 0.010
H12 2.154 1.642 0.013
C13 -0.004 1.244 0.069
H14 -0.417 2.257 0.124

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 H6 C7 H8 H9 C10 C11 H12 C13 H14
C11.10351.10511.56352.22172.23102.60613.58992.88571.53722.42953.48412.42813.4778
H21.10351.78842.23492.41812.88132.88613.94042.82632.20273.31374.33913.29734.3089
H31.10511.78842.20043.04462.38373.03004.01023.15662.16743.03544.01403.03584.0104
C41.56352.23492.20041.10711.10523.78914.58314.30592.45821.52922.31952.40353.4613
H52.22172.41813.04461.10711.78274.31085.09674.75553.09042.17412.74683.06284.0591
H62.23102.88132.38371.10521.78274.64895.47165.09253.33232.19872.68013.23364.2409
C72.60612.88613.03003.78914.31084.64891.09581.09571.37473.66434.67132.54772.9076
H83.58993.94044.01024.58315.09675.47161.09581.87502.15314.13065.00922.82192.7530
H92.88572.82633.15664.30594.75555.09251.09571.87502.15974.50195.56143.53623.9940
C101.53722.20272.16742.45823.09043.33231.37472.15312.15972.34943.40531.48312.2792
C112.42953.31373.03541.52922.17412.19873.66434.13064.50192.34941.09571.37502.2031
H123.48414.33914.01402.31952.74682.68014.67135.00925.56143.40531.09572.19562.6455
C132.42813.29733.03582.40353.06283.23362.54772.82193.53621.48311.37502.19561.0947
H143.47784.30894.01043.46134.05914.24092.90762.75303.99402.27922.20312.64551.0947

picture of 3-Methylenecyclopentene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H5 111.444 C1 C4 H6 112.299
C1 C4 C11 103.539 C1 C10 C7 126.919
C1 C10 C13 107.003 H2 C1 H3 108.140
H2 C1 C4 112.717 H2 C1 C10 112.007
H3 C1 C4 109.896 H3 C1 C10 109.129
C4 C1 C10 104.893 C4 C11 H12 123.319
C4 C11 C13 111.591 H5 C4 H6 107.373
H5 C4 C11 110.082 H6 C4 C11 112.145
C7 C10 C13 126.075 H8 C7 H9 117.647
H8 C7 C10 120.857 H9 C7 C10 121.496
C10 C13 C11 110.516 C10 C13 H14 123.597
C11 C13 H14 125.880 H12 C11 C13 125.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability