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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-232.590935
Energy at 298.15K 
HF Energy-231.828507
Nuclear repulsion energy216.531783
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 MP2/6-31G*
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 3296 3108 10.72      
2 A 3260 3075 15.63      
3 A 3238 3054 1.72      
4 A 3207 3024 4.05      
5 A 3171 2991 19.34      
6 A 3136 2958 11.02      
7 A 3120 2943 17.61      
8 A 3097 2920 29.57      
9 A 1732 1633 7.41      
10 A 1661 1567 0.09      
11 A 1561 1472 2.69      
12 A 1534 1447 1.16      
13 A 1494 1409 0.89      
14 A 1403 1323 0.99      
15 A 1371 1292 2.50      
16 A 1311 1237 0.23      
17 A 1302 1228 1.53      
18 A 1278 1205 0.12      
19 A 1200 1132 0.90      
20 A 1150 1084 1.26      
21 A 1057 997 2.27      
22 A 1048 989 2.65      
23 A 985 929 1.61      
24 A 946 892 5.18      
25 A 931 878 0.62      
26 A 874 824 0.34      
27 A 870 821 0.02      
28 A 854 805 46.82      
29 A 791 746 18.61      
30 A 785 740 0.83      
31 A 678 639 14.23      
32 A 634 598 0.16      
33 A 499 470 10.74      
34 A 356 336 0.47      
35 A 271 256 0.59      
36 A 62i 59i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 27019.6 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 25479.5 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 MP2/6-31G*
ABC
0.24394 0.11528 0.08061

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.101 -1.193 0.003
H2 -0.077 -1.824 -0.874
H3 -0.073 -1.815 0.886
C4 1.534 -0.604 -0.003
H5 2.105 -0.922 -0.884
H6 2.113 -0.925 0.872
C7 -2.175 -0.020 -0.002
H8 -2.762 0.894 -0.003
H9 -2.727 -0.955 -0.003
C10 -0.832 0.011 0.000
C11 1.314 0.886 0.000
H12 2.134 1.600 0.000
C13 0.007 1.208 0.002
H14 -0.397 2.217 0.003

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 H6 C7 H8 H9 C10 C11 H12 C13 H14
C11.09471.09471.54912.20792.20802.56053.54272.83801.52302.40693.45392.40223.4457
H21.09471.76002.20012.36062.94112.90123.91852.92182.16823.16894.16783.15654.1470
H31.09471.76002.19942.94472.35982.90443.92012.92902.16763.16324.16133.15104.1408
C41.54912.20012.19941.09691.09693.75494.54974.27552.44491.50672.28422.36953.4188
H52.20792.36062.94471.09691.75594.46205.26874.91163.20612.16252.67233.11774.1108
H62.20802.94112.35981.09691.75594.46895.27634.91863.21092.16302.67113.12094.1142
C72.56052.90122.90443.75494.46204.46891.08601.08591.34323.60484.60322.50392.8572
H83.54273.91853.92014.54975.26875.27631.08601.84942.12214.07604.94632.78682.7096
H92.83802.92182.92904.27554.91164.91861.08591.84942.12684.44085.49133.48623.9356
C101.52302.16822.16762.44493.20613.21091.34322.12212.12682.31793.36481.46192.2484
C112.40693.16893.16321.50672.16252.16303.60484.07604.44082.31791.08681.34582.1677
H123.45394.16784.16132.28422.67232.67114.60324.94635.49133.36481.08682.16242.6051
C132.40223.15653.15102.36953.11773.12092.50392.78683.48621.46191.34582.16241.0871
H143.44574.14704.14083.41884.11084.11422.85722.70963.93562.24842.16772.60511.0871

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 111.980 C1 C4 H6 111.989
C1 C4 C11 103.925 C1 C10 C7 126.478
C1 C10 C13 107.164 H2 C1 H3 107.005
H2 C1 C4 111.487 H2 C1 C10 110.786
H3 C1 C4 111.430 H3 C1 C10 110.729
C4 C1 C10 105.469 C4 C11 H12 122.642
C4 C11 C13 112.218 H5 C4 H6 106.334
H5 C4 C11 111.350 H6 C4 C11 111.390
C7 C10 C13 126.358 H8 C7 H9 116.743
H8 C7 C10 121.395 H9 C7 C10 121.862
C10 C13 C11 111.223 C10 C13 H14 123.117
C11 C13 H14 125.660 H12 C11 C13 125.140
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability