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

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-195.179122
Energy at 298.15K-195.188304
Nuclear repulsion energy176.866935
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' 3246 3081 23.79      
2 A' 3227 3063 8.70      
3 A' 3162 3001 47.40      
4 A' 3143 2983 22.02      
5 A' 3094 2937 58.26      
6 A' 1537 1459 1.13      
7 A' 1514 1437 2.40      
8 A' 1403 1332 0.55      
9 A' 1275 1210 1.27      
10 A' 1233 1171 0.18      
11 A' 1154 1096 0.29      
12 A' 1053 1000 0.20      
13 A' 1009 957 2.15      
14 A' 974 925 8.70      
15 A' 935 887 0.70      
16 A' 806 765 5.46      
17 A' 794 754 3.39      
18 A' 410 389 0.65      
19 A" 3219 3055 24.85      
20 A" 3144 2984 0.55      
21 A" 3085 2929 48.94      
22 A" 1507 1431 0.09      
23 A" 1338 1271 5.27      
24 A" 1276 1212 1.18      
25 A" 1240 1177 0.06      
26 A" 1139 1081 0.04      
27 A" 1097 1041 3.17      
28 A" 1070 1016 0.07      
29 A" 1017 966 4.06      
30 A" 947 899 0.32      
31 A" 828 786 14.07      
32 A" 680 646 0.16      
33 A" 263 250 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 25908.5 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 24594.9 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
0.30807 0.20624 0.16168

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 -0.246 -0.537 0.760
C2 -0.246 -0.537 -0.760
C3 -0.246 0.985 0.776
C4 -0.246 0.985 -0.776
C5 0.941 -1.032 0.000
H6 -0.793 -1.177 1.442
H7 -0.793 -1.177 -1.442
H8 0.608 1.456 1.274
H9 0.608 1.456 -1.274
H10 -1.163 1.412 1.185
H11 -1.163 1.412 -1.185
H12 1.868 -0.461 0.000
H13 1.080 -2.108 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52001.52262.16301.49371.08392.35792.22812.97282.19562.90212.24722.1915
C21.52002.16301.52261.49372.35791.08392.97282.22812.90212.19562.24722.1915
C31.52262.16301.55292.46632.32793.14631.09432.27031.09122.20682.67633.4540
C42.16301.52261.55292.46633.14632.32792.27031.09432.20681.09122.67633.4540
C51.49371.49372.46632.46632.26022.26022.81512.81513.43603.43601.08861.0847
H61.08392.35792.32793.14632.26022.88482.98724.03412.62793.70693.11012.5407
H72.35791.08393.14632.32792.26022.88484.03412.98723.70692.62793.11012.5407
H82.22812.97281.09432.27032.81512.98724.03412.54801.77423.03072.62393.8140
H92.97282.22812.27031.09432.81514.03412.98722.54803.03071.77422.62393.8140
H102.19562.90211.09122.20683.43602.62793.70691.77423.03072.36933.75504.3389
H112.90212.19562.20681.09123.43603.70692.62793.03071.77422.36933.75504.3389
H122.24722.24722.67632.67631.08863.11013.11012.62392.62393.75503.75501.8256
H132.19152.19153.45403.45401.08472.54072.54073.81403.81404.33894.33891.8256

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 90.620 C1 C2 C5 59.416
C1 C2 H7 129.020 C1 C3 C4 89.380
C1 C3 H8 115.766 C1 C3 H10 113.253
C1 C5 C2 61.169 C1 C5 H12 120.160
C1 C5 H13 115.505 C2 C1 C3 90.620
C2 C1 C5 59.416 C2 C1 H6 129.020
C2 C4 C3 89.380 C2 C4 H9 115.766
C2 C4 H11 113.253 C2 C5 H12 120.160
C2 C5 H13 115.505 C3 C1 C5 109.698
C3 C1 H6 125.702 C3 C4 H9 117.042
C3 C4 H11 111.967 C4 C2 C5 109.698
C4 C2 H7 125.702 C4 C3 H8 117.042
C4 C3 H10 111.967 C5 C1 H6 121.720
C5 C2 H7 121.720 H8 C3 H10 108.548
H9 C4 H11 108.548 H12 C5 H13 114.283
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 -0.152      
2 C -0.152      
3 C -0.315      
4 C -0.315      
5 C -0.352      
6 H 0.157      
7 H 0.157      
8 H 0.155      
9 H 0.155      
10 H 0.165      
11 H 0.165      
12 H 0.161      
13 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.263 -0.081 0.000 0.276
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.782 0.141 0.000
y 0.141 -30.204 0.000
z 0.000 0.000 -31.882
Traceless
 xyz
x 0.261 0.141 0.000
y 0.141 1.128 0.000
z 0.000 0.000 -1.389
Polar
3z2-r2-2.778
x2-y2-0.578
xy0.141
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.708 -0.370 0.000
y -0.370 7.386 0.000
z 0.000 0.000 6.797


<r2> (average value of r2) Å2
<r2> 96.996
(<r2>)1/2 9.849