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

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-195.169070
Energy at 298.15K-195.178070
Nuclear repulsion energy174.302545
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 BLYP/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' 3121 3097 31.18      
2 A' 3101 3077 12.54      
3 A' 3038 3014 58.28      
4 A' 3023 3000 25.86      
5 A' 2972 2949 69.27      
6 A' 1481 1470 0.46      
7 A' 1458 1447 0.80      
8 A' 1328 1318 2.17      
9 A' 1209 1199 0.62      
10 A' 1184 1175 0.41      
11 A' 1100 1092 0.35      
12 A' 1002 995 0.01      
13 A' 952 944 2.39      
14 A' 907 900 6.18      
15 A' 876 869 1.90      
16 A' 765 759 1.36      
17 A' 741 736 5.22      
18 A' 402 399 0.56      
19 A" 3093 3070 31.80      
20 A" 3020 2997 1.56      
21 A" 2964 2942 54.87      
22 A" 1458 1447 0.08      
23 A" 1272 1262 2.62      
24 A" 1229 1220 0.68      
25 A" 1192 1183 0.03      
26 A" 1093 1084 0.01      
27 A" 1045 1037 2.97      
28 A" 1025 1017 0.00      
29 A" 964 957 3.28      
30 A" 909 902 0.04      
31 A" 769 763 9.66      
32 A" 661 656 0.02      
33 A" 260 258 0.48      

Unscaled Zero Point Vibrational Energy (zpe) 24807.9 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 24616.9 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 BLYP/6-31G**
ABC
0.30015 0.19976 0.15607

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.247 -0.541 0.774
C2 -0.247 -0.541 -0.774
C3 -0.247 1.004 0.789
C4 -0.247 1.004 -0.789
C5 0.948 -1.063 0.000
H6 -0.806 -1.179 1.462
H7 -0.806 -1.179 -1.462
H8 0.613 1.483 1.289
H9 0.613 1.483 -1.289
H10 -1.172 1.433 1.202
H11 -1.172 1.433 -1.202
H12 1.897 -0.512 0.000
H13 1.066 -2.150 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54771.54512.19781.51641.09292.39162.25843.01522.22142.94202.27922.2165
C21.54772.19781.54511.51642.39161.09293.01522.25842.94202.22142.27922.2165
C31.54512.19781.57852.51482.35253.18581.10382.29971.10032.23732.74163.5068
C42.19781.54511.57852.51483.18582.35252.29971.10382.23731.10032.74163.5068
C51.51641.51642.51482.51482.28652.28652.87362.87363.48853.48851.09731.0936
H61.09292.39162.35253.18582.28652.92403.02204.08322.65053.74903.14472.5659
H72.39161.09293.18582.35252.28652.92404.08323.02203.74902.65053.14472.5659
H82.25843.01521.10382.29972.87363.02204.08322.57851.78803.06542.70003.8819
H93.01522.25842.29971.10382.87364.08323.02202.57853.06541.78802.70003.8819
H102.22142.94201.10032.23733.48852.65053.74901.78803.06542.40423.82694.3923
H112.94202.22142.23731.10033.48853.74902.65053.06541.78802.40423.82694.3923
H122.27922.27922.74162.74161.09733.14473.14472.70002.70003.82693.82691.8373
H132.21652.21653.50683.50681.09362.56592.56593.88193.88194.39234.39231.8373

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 90.571 C1 C2 C5 59.314
C1 C2 H7 129.025 C1 C3 C4 89.429
C1 C3 H8 115.996 C1 C3 H10 113.151
C1 C5 C2 61.373 C1 C5 H12 120.545
C1 C5 H13 115.298 C2 C1 C3 90.571
C2 C1 C5 59.314 C2 C1 H6 129.025
C2 C4 C3 89.429 C2 C4 H9 115.996
C2 C4 H11 113.151 C2 C5 H12 120.545
C2 C5 H13 115.298 C3 C1 C5 110.459
C3 C1 H6 125.323 C3 C4 H9 116.935
C3 C4 H11 112.038 C4 C2 C5 110.459
C4 C2 H7 125.323 C4 C3 H8 116.935
C4 C3 H10 112.038 C5 C1 H6 121.551
C5 C2 H7 121.551 H8 C3 H10 108.435
H9 C4 H11 108.435 H12 C5 H13 113.979
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.055      
2 C -0.055      
3 C -0.156      
4 C -0.156      
5 C -0.188      
6 H 0.062      
7 H 0.062      
8 H 0.075      
9 H 0.075      
10 H 0.083      
11 H 0.083      
12 H 0.079      
13 H 0.087      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.248 -0.071 0.000 0.258
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.243 0.111 0.000
y 0.111 -30.724 0.000
z 0.000 0.000 -32.210
Traceless
 xyz
x 0.224 0.111 0.000
y 0.111 1.003 0.000
z 0.000 0.000 -1.227
Polar
3z2-r2-2.454
x2-y2-0.519
xy0.111
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 99.710
(<r2>)1/2 9.985