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

using model chemistry: PBEPBE/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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-193.781103
Energy at 298.15K-193.787228
Nuclear repulsion energy159.574994
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 PBEPBE/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 3152 3120 3.77      
2 A 3144 3111 46.21      
3 A 3129 3097 2.63      
4 A 3034 3003 32.24      
5 A 1562 1546 4.82      
6 A 1419 1404 1.36      
7 A 1258 1245 0.91      
8 A 1171 1159 1.21      
9 A 1084 1073 1.28      
10 A 1009 999 1.83      
11 A 942 932 3.23      
12 A 854 845 2.90      
13 A 785 777 0.26      
14 A 721 714 52.64      
15 A 405 401 4.28      
16 A 3137 3105 18.38      
17 A 3112 3080 7.93      
18 A 1273 1260 19.50      
19 A 1171 1159 0.11      
20 A 1045 1034 4.51      
21 A 1007 997 0.64      
22 A 1000 990 2.30      
23 A 931 921 1.61      
24 A 855 846 8.28      
25 A 802 794 5.97      
26 A 768 760 23.27      
27 A 443 439 1.63      

Unscaled Zero Point Vibrational Energy (zpe) 19606.0 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 19404.1 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 PBEPBE/6-31G(2df,p)
ABC
0.35928 0.21602 0.17323

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.270 1.057 0.676
C2 -0.270 1.057 -0.676
C3 -0.270 -0.463 0.763
C4 -0.270 -0.463 -0.763
C5 0.931 -1.008 0.000
H6 -0.123 1.828 1.436
H7 -0.123 1.828 -1.436
H8 -0.883 -1.094 1.407
H9 -0.883 -1.094 -1.407
H10 1.868 -0.443 0.000
H11 1.046 -2.100 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.35201.52232.09332.48291.09242.25282.35323.05652.69803.4860
C21.35202.09331.52232.48292.25281.09243.05652.35322.69803.4860
C31.52232.09331.52691.52402.39223.17901.09022.34212.27062.2345
C42.09331.52231.52691.52403.17902.39222.34211.09022.27062.2345
C52.48292.48291.52401.52403.34943.34942.29732.29731.09471.0973
H61.09242.25282.39223.17903.34942.87113.01974.14703.34444.3423
H72.25281.09243.17902.39223.34942.87114.14703.01973.34444.3423
H82.35323.05651.09022.34212.29733.01974.14702.81403.15812.5905
H93.05652.35322.34211.09022.29734.14703.01972.81403.15812.5905
H102.69802.69802.27062.27061.09473.34443.34443.15813.15811.8496
H113.48603.48602.23452.23451.09734.34234.34232.59052.59051.8496

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 93.293 C1 C2 H7 134.051
C1 C3 C4 86.707 C1 C3 C5 109.183
C1 C3 H8 127.735 C2 C1 C3 93.293
C2 C1 H6 134.051 C2 C4 C3 86.707
C2 C4 C5 109.183 C2 C4 H9 127.735
C3 C1 H6 131.678 C3 C4 C5 59.938
C3 C4 H9 126.181 C3 C5 C4 60.124
C3 C5 H10 119.334 C3 C5 H11 116.003
C4 C2 H7 131.678 C4 C3 C5 59.938
C4 C3 H8 126.181 C4 C5 H10 119.334
C4 C5 H11 116.003 C5 C3 H8 122.109
C5 C4 H9 122.109 H10 C5 H11 115.090
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.100      
2 C -0.100      
3 C -0.089      
4 C -0.089      
5 C -0.274      
6 H 0.102      
7 H 0.102      
8 H 0.103      
9 H 0.103      
10 H 0.124      
11 H 0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.142 -0.373 0.000 0.399
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.775 0.773 0.000
y 0.773 -28.047 0.000
z 0.000 0.000 -29.314
Traceless
 xyz
x -2.095 0.773 0.000
y 0.773 1.998 0.000
z 0.000 0.000 0.097
Polar
3z2-r20.194
x2-y2-2.728
xy0.773
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.754 -0.472 0.000
y -0.472 8.070 0.000
z 0.000 0.000 7.393


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000