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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-37.911123
Energy at 298.15K-37.919231
HF Energy-37.435550
Nuclear repulsion energy110.844148
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 3230 3121 32.93      
2 A 3202 3094 30.50      
3 A 3167 3060 7.95      
4 A 3138 3032 18.45      
5 A 3129 3023 65.19      
6 A 3098 2993 20.01      
7 A 3057 2954 48.04      
8 A 3037 2935 50.85      
9 A 1667 1611 7.85      
10 A 1581 1528 1.01      
11 A 1527 1475 4.18      
12 A 1505 1454 1.39      
13 A 1472 1422 0.89      
14 A 1364 1318 1.23      
15 A 1351 1305 2.67      
16 A 1302 1258 0.63      
17 A 1268 1225 2.93      
18 A 1254 1212 0.09      
19 A 1175 1135 1.69      
20 A 1122 1084 1.45      
21 A 1062 1027 2.84      
22 A 1014 979 2.91      
23 A 949 917 1.85      
24 A 913 882 3.33      
25 A 902 872 6.49      
26 A 859 830 0.50      
27 A 840 812 0.60      
28 A 790 763 50.50      
29 A 767 741 70.04      
30 A 765 739 0.90      
31 A 657 634 23.07      
32 A 615 594 0.28      
33 A 503 486 19.05      
34 A 343 332 0.33      
35 A 286 276 1.41      
36 A 23 22 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26464.4 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 25572.6 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
0.22993 0.10876 0.07600

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 0.101 -1.232 0.000
H2 -0.075 -1.862 -0.898
H3 -0.075 -1.861 0.899
C4 1.578 -0.627 -0.000
H5 2.153 -0.949 -0.898
H6 2.153 -0.949 0.897
C7 -2.244 -0.018 -0.000
H8 -2.833 0.913 -0.000
H9 -2.802 -0.968 -0.000
C10 -0.853 0.010 0.000
C11 1.360 0.914 -0.000
H12 2.192 1.634 -0.000
C13 0.007 1.248 0.000
H14 -0.404 2.267 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 H6 C7 H8 H9 C10 C11 H12 C13 H14
C11.11121.11121.59632.25742.25742.64053.63392.91501.56612.48793.54742.48203.5354
H21.11121.79762.25012.40723.00322.98494.01353.00702.21733.25104.26183.23824.2384
H31.11121.79762.25013.00352.40712.98534.01373.00782.21723.25054.26133.23774.2378
C41.59632.25012.25011.11311.11313.87084.67224.39362.51341.55672.34302.44693.5082
H52.25742.40723.00351.11311.79454.58315.39705.03543.28032.21492.73493.20004.2057
H62.25743.00322.40711.11311.79454.58365.39755.03603.28062.21492.73493.20014.2057
C72.64052.98492.98533.87084.58314.58361.10141.10131.39173.72274.73372.58312.9347
H83.63394.01354.01374.67225.39705.39751.10141.88072.17594.19285.07622.85962.7816
H92.91503.00703.00784.39365.03545.03601.10131.88072.18094.56765.63103.57814.0274
C101.56612.21732.21722.51343.28033.28061.39172.17592.18092.39013.45051.50732.3013
C112.48793.25103.25051.55672.21492.21493.72274.19284.56762.39011.10021.39362.2229
H123.54744.26184.26132.34302.73492.73494.73375.07625.63103.45051.10022.21862.6715
C132.48203.23823.23772.44693.20003.20012.58312.85963.57811.50731.39362.21861.0986
H143.53544.23844.23783.50824.20574.20572.93472.78164.02742.30132.22292.67151.0986

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 111.613 C1 C4 H6 111.609
C1 C4 C11 104.187 C1 C10 C7 126.335
C1 C10 C13 107.702 H2 C1 H3 107.963
H2 C1 C4 111.151 H2 C1 C10 110.674
H3 C1 C4 111.145 H3 C1 C10 110.669
C4 C1 C10 105.264 C4 C11 H12 122.809
C4 C11 C13 111.950 H5 C4 H6 107.430
H5 C4 C11 111.030 H6 C4 C11 111.027
C7 C10 C13 125.963 H8 C7 H9 117.258
H8 C7 C10 121.125 H9 C7 C10 121.617
C10 C13 C11 110.897 C10 C13 H14 123.277
C11 C13 H14 125.826 H12 C11 C13 125.240
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability