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

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-192.950568
Energy at 298.15K-192.956844
Nuclear repulsion energy158.712513
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 B3LYP/3-21G
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 3271 3157 2.73      
2 A 3255 3140 27.30      
3 A 3236 3122 4.95      
4 A 3134 3024 22.81      
5 A 1582 1527 4.27      
6 A 1509 1456 2.24      
7 A 1263 1219 1.56      
8 A 1182 1140 3.24      
9 A 1112 1073 2.70      
10 A 1019 984 1.06      
11 A 954 920 4.08      
12 A 886 855 6.99      
13 A 801 772 2.63      
14 A 752 726 71.54      
15 A 442 426 6.99      
16 A 3253 3139 8.08      
17 A 3222 3109 5.07      
18 A 1307 1261 25.33      
19 A 1239 1196 0.52      
20 A 1124 1085 6.51      
21 A 1062 1025 4.32      
22 A 1052 1015 6.21      
23 A 949 916 9.93      
24 A 873 842 0.12      
25 A 856 825 0.57      
26 A 770 743 26.23      
27 A 458 442 2.14      

Unscaled Zero Point Vibrational Energy (zpe) 20281.3 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 19569.5 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 B3LYP/3-21G
ABC
0.35307 0.21371 0.17170

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.276 1.062 0.675
C2 -0.276 1.062 -0.675
C3 -0.276 -0.478 0.774
C4 -0.276 -0.478 -0.774
C5 0.951 -0.998 0.000
H6 -0.152 1.831 1.423
H7 -0.152 1.831 -1.423
H8 -0.868 -1.097 1.430
H9 -0.868 -1.097 -1.430
H10 1.857 -0.402 0.000
H11 1.089 -2.077 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.34961.54322.11462.49011.08012.23772.36203.07222.67313.4882
C21.34962.11461.54322.49012.23771.08013.07222.36202.67313.4882
C31.54322.11461.54891.54092.40163.18991.07822.36472.26992.2400
C42.11461.54321.54891.54093.18992.40162.36471.07822.26992.2400
C52.49012.49011.54091.54093.35263.35262.31582.31581.08361.0880
H61.08012.23772.40163.18993.35262.84603.01374.14983.32334.3396
H72.23771.08013.18992.40163.35262.84604.14983.01373.32334.3396
H82.36203.07221.07822.36472.31583.01374.14982.85963.15432.6144
H93.07222.36202.36471.07822.31584.14983.01372.85963.15432.6144
H102.67312.67312.26992.26991.08363.32333.32333.15433.15431.8419
H113.48823.48822.24002.24001.08804.33964.33962.61442.61441.8419

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 93.703 C1 C2 H7 133.844
C1 C3 C4 86.297 C1 C3 C5 107.686
C1 C3 H8 127.700 C2 C1 C3 93.703
C2 C1 H6 133.844 C2 C4 C3 86.297
C2 C4 C5 107.686 C2 C4 H9 127.700
C3 C1 H6 131.744 C3 C4 C5 59.828
C3 C4 H9 127.433 C3 C5 C4 60.343
C3 C5 H10 118.701 C3 C5 H11 115.801
C4 C2 H7 131.744 C4 C3 C5 59.828
C4 C3 H8 127.433 C4 C5 H10 118.701
C4 C5 H11 115.801 C5 C3 H8 123.335
C5 C4 H9 123.335 H10 C5 H11 116.026
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.119     -0.226
2 C -0.119     -0.226
3 C -0.280     -0.054
4 C -0.280     -0.054
5 C -0.311     -0.400
6 H 0.170     0.181
7 H 0.170     0.181
8 H 0.182     0.124
9 H 0.182     0.124
10 H 0.207     0.187
11 H 0.200     0.165


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.192 -0.356 0.000 0.405
CHELPG        
AIM        
ESP 0.155 -0.274 0.000 0.314


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.610 0.816 0.000
y 0.816 -27.933 0.000
z 0.000 0.000 -29.658
Traceless
 xyz
x -2.815 0.816 0.000
y 0.816 2.701 0.000
z 0.000 0.000 0.114
Polar
3z2-r20.228
x2-y2-3.677
xy0.816
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.807 -0.473 0.000
y -0.473 7.085 0.000
z 0.000 0.000 6.767


<r2> (average value of r2) Å2
<r2> 88.632
(<r2>)1/2 9.414