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All results from a given calculation for C5H8 (Bicyclo[2.1.0]pentane)

using model chemistry: HF/6-311G*

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/6-311G*
 hartrees
Energy at 0K-193.958848
Energy at 298.15K-193.968330
Nuclear repulsion energy176.863965
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/6-311G*
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' 3346 3026 58.13      
2 A' 3330 3011 2.05      
3 A' 3256 2945 108.68      
4 A' 3249 2938 20.97      
5 A' 3202 2896 85.43      
6 A' 1648 1490 0.78      
7 A' 1628 1473 2.20      
8 A' 1488 1346 1.32      
9 A' 1378 1246 1.08      
10 A' 1316 1190 0.13      
11 A' 1227 1109 0.49      
12 A' 1113 1007 0.02      
13 A' 1050 950 3.88      
14 A' 1027 929 7.73      
15 A' 977 884 0.20      
16 A' 848 767 1.49      
17 A' 840 759 10.32      
18 A' 449 406 0.41      
19 A" 3325 3007 38.60      
20 A" 3233 2924 1.57      
21 A" 3188 2883 74.39      
22 A" 1618 1463 0.07      
23 A" 1441 1303 5.16      
24 A" 1385 1252 0.50      
25 A" 1336 1209 0.06      
26 A" 1233 1115 0.13      
27 A" 1197 1083 1.57      
28 A" 1164 1053 0.84      
29 A" 1062 960 4.90      
30 A" 1018 921 0.01      
31 A" 849 768 20.35      
32 A" 752 680 0.02      
33 A" 291 263 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 27230.6 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 24627.3 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/6-311G*
ABC
0.30876 0.20535 0.16096

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 -0.538 0.758
C2 -0.245 -0.538 -0.758
C3 -0.245 0.991 0.779
C4 -0.245 0.991 -0.779
C5 0.941 -1.040 0.000
H6 -0.791 -1.170 1.434
H7 -0.791 -1.170 -1.434
H8 0.600 1.458 1.273
H9 0.600 1.458 -1.273
H10 -1.157 1.411 1.186
H11 -1.157 1.411 -1.186
H12 1.866 -0.484 0.000
H13 1.073 -2.108 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51671.52832.16771.49481.07502.34662.22812.97102.19322.89972.24382.1861
C21.51672.16771.52831.49482.34661.07502.97102.22812.89972.19322.24382.1861
C31.52832.16771.55812.47722.32333.14121.08552.26851.08302.20652.69013.4564
C42.16771.52831.55812.47723.14122.32332.26851.08552.20651.08302.69013.4564
C51.49481.49482.47722.47722.25282.25282.82472.82473.43693.43691.07931.0764
H61.07502.34662.32333.14122.25282.86862.97894.02232.61883.69633.09672.5322
H72.34661.07503.14122.32332.25282.86864.02232.97893.69632.61883.09672.5322
H82.22812.97101.08552.26852.82472.97894.02232.54661.75993.02292.64463.8164
H92.97102.22812.26851.08552.82474.02232.97892.54663.02291.75992.64463.8164
H102.19322.89971.08302.20653.43692.61883.69631.75993.02292.37203.75914.3314
H112.89972.19322.20651.08303.43693.69632.61883.02291.75992.37203.75914.3314
H122.24382.24382.69012.69011.07933.09673.09672.64462.64463.75913.75911.8078
H132.18612.18613.45643.45641.07642.53222.53223.81643.81644.33144.33141.8078

picture of Bicyclo[2.1.0]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 90.775 C1 C2 C5 59.512
C1 C2 H7 128.960 C1 C3 C4 89.225
C1 C3 H8 115.919 C1 C3 H10 113.152
C1 C5 C2 60.975 C1 C5 H12 120.453
C1 C5 H13 115.514 C2 C1 C3 90.775
C2 C1 C5 59.512 C2 C1 H6 128.960
C2 C4 C3 89.225 C2 C4 H9 115.919
C2 C4 H11 113.152 C2 C5 H12 120.453
C2 C5 H13 115.514 C3 C1 C5 110.050
C3 C1 H6 125.458 C3 C4 H9 117.087
C3 C4 H11 112.073 C4 C2 C5 110.050
C4 C2 H7 125.458 C4 C3 H8 117.087
C4 C3 H10 112.073 C5 C1 H6 121.625
C5 C2 H7 121.625 H8 C3 H10 108.493
H9 C4 H11 108.493 H12 C5 H13 113.985
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.236 -0.030   -0.004
2 C -0.236 -0.030   -0.004
3 C -0.401 -0.023   -0.173
4 C -0.401 -0.395   -0.173
5 C -0.421 -0.023   -0.501
6 H 0.205 0.060   0.078
7 H 0.205 0.060   0.078
8 H 0.206 0.021   0.083
9 H 0.206 0.022   0.083
10 H 0.218 0.154   0.079
11 H 0.218 0.141   0.079
12 H 0.207 0.022   0.186
13 H 0.230 0.021   0.187


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.261 -0.071 0.000 0.270
CHELPG        
AIM        
ESP -0.213 -0.078 0.000 0.227


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.665 0.176 0.000
y 0.176 -31.154 0.000
z 0.000 0.000 -32.773
Traceless
 xyz
x 0.298 0.176 0.000
y 0.176 1.065 0.000
z 0.000 0.000 -1.363
Polar
3z2-r2-2.727
x2-y2-0.511
xy0.176
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.689 0.000 0.069
y 0.000 7.108 0.000
z 0.069 0.000 6.700


<r2> (average value of r2) Å2
<r2> 97.678
(<r2>)1/2 9.883