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All results from a given calculation for C5H6 (Bicyclo[2.1.0]pent-2-ene)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-193.790094
Energy at 298.15K-193.796374
HF Energy-193.576074
Nuclear repulsion energy160.190795
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3255 3089 7.18      
2 A' 3247 3082 47.49      
3 A' 3235 3071 2.49      
4 A' 3147 2987 29.70      
5 A' 1610 1528 4.67      
6 A' 1519 1442 0.69      
7 A' 1325 1258 0.62      
8 A' 1226 1164 1.49      
9 A' 1134 1076 1.35      
10 A' 1057 1003 1.92      
11 A' 983 933 2.91      
12 A' 883 838 3.61      
13 A' 826 784 0.02      
14 A' 748 710 58.88      
15 A' 428 407 5.49      
16 A" 3240 3075 20.24      
17 A" 3220 3057 6.93      
18 A" 1344 1276 19.74      
19 A" 1249 1185 0.08      
20 A" 1113 1056 4.63      
21 A" 1073 1018 4.88      
22 A" 1061 1007 0.89      
23 A" 963 914 2.71      
24 A" 889 844 10.49      
25 A" 833 791 2.89      
26 A" 799 759 26.41      
27 A" 460 437 1.98      

Unscaled Zero Point Vibrational Energy (zpe) 20432.9 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 19395.0 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 B2PLYP/6-31G*
ABC
0.36304 0.21722 0.17415

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.264 1.057 0.672
C2 -0.264 1.057 -0.672
C3 -0.264 -0.465 0.764
C4 -0.264 -0.465 -0.764
C5 0.923 -1.010 0.000
H6 -0.191 1.811 1.446
H7 -0.191 1.811 -1.446
H8 -0.872 -1.049 1.445
H9 -0.872 -1.049 -1.445
H10 1.871 -0.469 0.000
H11 1.044 -2.094 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.34461.52452.09242.47591.08352.25022.32343.04692.70843.4771
C21.34462.09241.52452.47592.25021.08353.04692.32342.70843.4771
C31.52452.09241.52761.51302.37773.17361.08362.36392.26732.2244
C42.09241.52451.52761.51303.17362.37772.36391.08362.26732.2244
C52.47592.47591.51301.51303.36043.36042.30482.30481.09121.0913
H61.08352.25022.37773.17363.36042.89262.93974.12323.39764.3441
H72.25021.08353.17362.37773.36042.89264.12322.93973.39764.3441
H82.32343.04691.08362.36392.30482.93974.12322.88963.15402.6177
H93.04692.32342.36391.08362.30484.12322.93972.88963.15402.6177
H102.70842.70842.26732.26731.09123.39763.39763.15403.15401.8238
H113.47713.47712.22442.22441.09134.34414.34412.61772.61771.8238

picture of Bicyclo[2.1.0]pent-2-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 93.440 C1 C2 H7 135.591
C1 C3 C4 86.560 C1 C3 C5 109.202
C1 C3 H8 125.113 C2 C1 C3 93.440
C2 C1 H6 135.591 C2 C4 C3 86.560
C2 C4 C5 109.202 C2 C4 H9 125.113
C3 C1 H6 130.728 C3 C4 C5 59.680
C3 C4 H9 128.940 C3 C5 C4 60.639
C3 C5 H10 120.201 C3 C5 H11 116.390
C4 C2 H7 130.728 C4 C3 C5 59.680
C4 C3 H8 128.940 C4 C5 H10 120.201
C4 C5 H11 116.390 C5 C3 H8 124.329
C5 C4 H9 124.329 H10 C5 H11 113.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.139      
2 C -0.139      
3 C -0.182      
4 C -0.182      
5 C -0.320      
6 H 0.152      
7 H 0.152      
8 H 0.166      
9 H 0.166      
10 H 0.168      
11 H 0.159      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.241 -0.400 0.000
y -0.400 7.482 0.000
z 0.000 0.000 7.011


<r2> (average value of r2) Å2
<r2> 87.428
(<r2>)1/2 9.350