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

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-38.327813
Energy at 298.15K-38.336118
HF Energy-37.557749
Nuclear repulsion energy113.443619
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 3268 3114 13.89      
2 A 3228 3075 20.65      
3 A 3205 3054 3.56      
4 A 3168 3019 7.55      
5 A 3148 2999 27.82      
6 A 3121 2974 24.05      
7 A 3077 2932 20.83      
8 A 3060 2916 42.03      
9 A 1687 1608 12.00      
10 A 1604 1528 0.54      
11 A 1531 1458 3.39      
12 A 1506 1435 2.67      
13 A 1467 1398 0.62      
14 A 1372 1307 1.07      
15 A 1350 1286 2.39      
16 A 1313 1251 0.36      
17 A 1277 1217 0.27      
18 A 1237 1179 1.85      
19 A 1179 1123 2.60      
20 A 1119 1066 1.07      
21 A 1041 992 5.24      
22 A 1020 971 1.84      
23 A 966 920 2.16      
24 A 931 887 5.38      
25 A 909 866 1.27      
26 A 882 840 1.69      
27 A 834 794 1.11      
28 A 797 759 9.79      
29 A 749 714 28.94      
30 A 732 698 45.37      
31 A 664 632 25.11      
32 A 628 599 1.03      
33 A 487 464 9.19      
34 A 353 337 0.50      
35 A 292 278 1.25      
36 A 116 110 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 26657.5 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 25399.3 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-121G*
ABC
0.23915 0.11454 0.08070

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 0.110 -1.168 0.172
H2 -0.176 -2.007 -0.470
H3 0.097 -1.515 1.214
C4 1.516 -0.591 -0.161
H5 1.799 -0.816 -1.200
H6 2.303 -0.994 0.486
C7 -2.182 -0.021 -0.108
H8 -2.771 0.892 -0.176
H9 -2.718 -0.966 -0.154
C10 -0.837 0.023 0.036
C11 1.320 0.908 0.011
H12 2.141 1.623 0.006
C13 0.003 1.234 0.086
H14 -0.397 2.244 0.154

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 H6 C7 H8 H9 C10 C11 H12 C13 H14
C11.09521.09791.55532.20452.22242.57873.55852.85371.52762.40803.45552.40593.4495
H21.09521.77562.22792.41992.84472.84623.90142.76452.19413.31194.33313.29374.3025
H31.09791.77562.18123.03542.38123.02893.99323.17682.15042.96893.93512.97283.9366
C41.55532.22792.18121.09971.09663.74174.53554.24962.43911.52152.30682.38323.4346
H52.20452.41993.03541.09971.76904.20424.98494.63893.02982.16022.74193.01374.0026
H62.22242.84472.38121.09661.76904.62815.45345.06173.33122.19312.66563.22704.2293
C72.57872.84623.02893.74174.20424.62811.08771.08741.35363.62484.62592.52722.8949
H83.55853.90143.99324.53554.98495.45341.08771.85822.13074.09494.96892.80732.7514
H92.85372.76453.17684.24964.63895.06171.08741.85822.13334.45415.50733.50713.9723
C101.52762.19412.15042.43913.02983.33121.35362.13072.13332.33133.38031.47482.2671
C112.40803.31192.96891.52152.16022.19313.62484.09494.45412.33131.08871.35862.1805
H123.45554.33313.93512.30682.74192.66564.62594.96895.50733.38031.08872.17412.6171
C132.40593.29372.97282.38323.01373.22702.52722.80733.50711.47481.35862.17411.0885
H143.44954.30253.93663.43464.00264.22932.89492.75143.97232.26712.18052.61711.0885

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 111.102 C1 C4 H6 112.720
C1 C4 C11 103.001 C1 C10 C7 126.913
C1 C10 C13 106.502 H2 C1 H3 108.117
H2 C1 C4 113.260 H2 C1 C10 112.508
H3 C1 C4 109.384 H3 C1 C10 108.876
C4 C1 C10 104.587 C4 C11 H12 123.355
C4 C11 C13 111.559 H5 C4 H6 107.305
H5 C4 C11 109.955 H6 C4 C11 112.782
C7 C10 C13 126.585 H8 C7 H9 117.368
H8 C7 C10 121.178 H9 C7 C10 121.453
C10 C13 C11 110.667 C10 C13 H14 123.665
C11 C13 H14 125.657 H12 C11 C13 124.972
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability