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

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-192.733556
Energy at 298.15K-192.740149
Nuclear repulsion energy161.348334
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 HF/6-31G(2df,p)
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 3374 3055 15.39      
2 A 3354 3037 38.72      
3 A 3335 3020 6.91      
4 A 3247 2940 37.80      
5 A 1759 1593 6.16      
6 A 1606 1454 0.75      
7 A 1419 1285 0.25      
8 A 1302 1179 0.98      
9 A 1200 1087 1.65      
10 A 1110 1005 2.24      
11 A 1042 944 3.63      
12 A 978 886 3.64      
13 A 878 795 0.90      
14 A 831 752 61.30      
15 A 465 421 4.62      
16 A 3345 3029 30.59      
17 A 3333 3018 0.17      
18 A 1440 1304 21.65      
19 A 1334 1208 0.10      
20 A 1208 1094 2.11      
21 A 1164 1054 5.83      
22 A 1138 1030 0.08      
23 A 1053 954 12.50      
24 A 986 893 2.60      
25 A 902 817 0.76      
26 A 845 765 32.46      
27 A 500 453 2.07      

Unscaled Zero Point Vibrational Energy (zpe) 21575.1 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 19536.3 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 HF/6-31G(2df,p)
ABC
0.37113 0.21870 0.17625

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.266 1.053 0.661
C2 -0.266 1.053 -0.661
C3 -0.266 -0.463 0.752
C4 -0.266 -0.463 -0.752
C5 0.922 -1.006 0.000
H6 -0.147 1.818 1.406
H7 -0.147 1.818 -1.406
H8 -0.868 -1.073 1.398
H9 -0.868 -1.073 -1.398
H10 1.851 -0.462 0.000
H11 1.027 -2.080 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.32251.51862.07262.46681.07422.20752.32893.01992.68593.4533
C21.32252.07261.51862.46682.20751.07423.01992.32892.68593.4533
C31.51862.07261.50431.50682.37553.14221.07312.31442.24652.2030
C42.07261.51861.50431.50683.14222.37552.31441.07312.24652.2030
C52.46682.46681.50681.50683.33033.33032.27202.27201.07671.0796
H61.07422.20752.37553.14223.33032.81222.97924.09093.34184.3069
H72.20751.07423.14222.37553.33032.81224.09092.97923.34184.3069
H82.32893.01991.07312.31442.27202.97924.09092.79503.11802.5616
H93.01992.32892.31441.07312.27204.09092.97922.79503.11802.5616
H102.68592.68592.24652.24651.07673.34183.34183.11803.11801.8157
H113.45333.45332.20302.20301.07964.30694.30692.56162.56161.8157

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 93.433 C1 C2 H7 133.903
C1 C3 C4 86.567 C1 C3 C5 109.252
C1 C3 H8 127.102 C2 C1 C3 93.433
C2 C1 H6 133.903 C2 C4 C3 86.567
C2 C4 C5 109.252 C2 C4 H9 127.102
C3 C1 H6 132.004 C3 C4 C5 60.053
C3 C4 H9 126.967 C3 C5 C4 59.894
C3 C5 H10 119.896 C3 C5 H11 115.823
C4 C2 H7 132.004 C4 C3 C5 60.053
C4 C3 H8 126.967 C4 C5 H10 119.896
C4 C5 H11 115.823 C5 C3 H8 122.554
C5 C4 H9 122.554 H10 C5 H11 114.705
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.146      
2 C -0.146      
3 C -0.135      
4 C -0.135      
5 C -0.288      
6 H 0.144      
7 H 0.144      
8 H 0.139      
9 H 0.139      
10 H 0.145      
11 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.122 -0.217 0.000 0.249
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.213 0.728 0.000
y 0.728 -28.214 0.000
z 0.000 0.000 -29.335
Traceless
 xyz
x -2.439 0.728 0.000
y 0.728 2.060 0.000
z 0.000 0.000 0.379
Polar
3z2-r20.758
x2-y2-2.999
xy0.728
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.451 -0.446 0.000
y -0.446 7.283 0.000
z 0.000 0.000 7.213


<r2> (average value of r2) Å2
<r2> 86.596
(<r2>)1/2 9.306