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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-193.934029
Energy at 298.15K-193.940313
Nuclear repulsion energy161.015955
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 B1B95/6-31G*
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 3258 3093 6.45      
2 A 3250 3085 46.32      
3 A 3237 3073 2.38      
4 A 3147 2988 30.27      
5 A 1650 1567 5.30      
6 A 1502 1426 1.21      
7 A 1336 1268 1.06      
8 A 1231 1168 1.40      
9 A 1131 1073 1.38      
10 A 1052 999 2.13      
11 A 984 934 3.21      
12 A 912 866 3.73      
13 A 822 780 0.25      
14 A 750 712 60.68      
15 A 421 400 5.29      
16 A 3242 3078 20.30      
17 A 3221 3058 6.84      
18 A 1343 1275 20.69      
19 A 1235 1172 0.06      
20 A 1100 1044 5.24      
21 A 1063 1010 1.82      
22 A 1053 1000 3.23      
23 A 976 927 2.41      
24 A 907 861 9.55      
25 A 835 792 9.54      
26 A 802 761 23.78      
27 A 461 437 1.63      

Unscaled Zero Point Vibrational Energy (zpe) 20459.2 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 19421.9 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 B1B95/6-31G*
ABC
0.36619 0.21970 0.17646

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.268 1.048 0.670
C2 -0.268 1.048 -0.670
C3 -0.268 -0.460 0.755
C4 -0.268 -0.460 -0.755
C5 0.922 -0.999 0.000
H6 -0.123 1.816 1.422
H7 -0.123 1.816 -1.422
H8 -0.880 -1.086 1.392
H9 -0.880 -1.086 -1.392
H10 1.852 -0.436 0.000
H11 1.041 -2.080 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.33911.51052.07452.46011.08452.23252.33423.02922.67233.4562
C21.33912.07451.51052.46012.23251.08453.02922.33422.67233.4562
C31.51052.07451.50991.50862.37603.15261.08262.31842.24972.2151
C42.07451.51051.50991.50863.15262.37602.31841.08262.24972.2151
C52.46012.46011.50861.50863.32193.32192.27912.27911.08611.0882
H61.08452.23252.37603.15263.32192.84342.99864.11183.31554.3076
H72.23251.08453.15262.37603.32192.84344.11182.99863.31554.3076
H82.33423.02921.08262.31842.27912.99864.11182.78363.13392.5724
H93.02922.33422.31841.08262.27914.11182.99862.78363.13392.5724
H102.67232.67232.24972.24971.08613.31553.31553.13393.13391.8332
H113.45623.45622.21512.21511.08824.30764.30762.57242.57241.8332

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 93.240 C1 C2 H7 133.908
C1 C3 C4 86.760 C1 C3 C5 109.147
C1 C3 H8 127.590 C2 C1 C3 93.240
C2 C1 H6 133.908 C2 C4 C3 86.760
C2 C4 C5 109.147 C2 C4 H9 127.590
C3 C1 H6 131.892 C3 C4 C5 59.972
C3 C4 H9 126.035 C3 C5 C4 60.056
C3 C5 H10 119.341 C3 C5 H11 116.141
C4 C2 H7 131.892 C4 C3 C5 59.972
C4 C3 H8 126.035 C4 C5 H10 119.341
C4 C5 H11 116.141 C5 C3 H8 122.318
C5 C4 H9 122.318 H10 C5 H11 114.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.130      
2 C -0.130      
3 C -0.191      
4 C -0.191      
5 C -0.337      
6 H 0.148      
7 H 0.148      
8 H 0.169      
9 H 0.169      
10 H 0.177      
11 H 0.168      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.146 -0.352 0.000 0.381
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.719 0.790 0.000
y 0.790 -27.730 0.000
z 0.000 0.000 -29.189
Traceless
 xyz
x -2.259 0.790 0.000
y 0.790 2.223 0.000
z 0.000 0.000 0.036
Polar
3z2-r20.071
x2-y2-2.988
xy0.790
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.272 -0.409 0.000
y -0.409 7.514 0.000
z 0.000 0.000 7.038


<r2> (average value of r2) Å2
<r2> 86.466
(<r2>)1/2 9.299