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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-195.009315
Energy at 298.15K-195.018333
HF Energy-195.009315
Nuclear repulsion energy175.099206
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 PBEPBEultrafine/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' 3143 3091 24.27      
2 A' 3122 3070 11.86      
3 A' 3060 3010 47.44      
4 A' 3043 2993 22.99      
5 A' 2992 2942 62.72      
6 A' 1486 1461 0.85      
7 A' 1460 1436 2.00      
8 A' 1346 1324 0.90      
9 A' 1218 1198 1.25      
10 A' 1192 1173 0.24      
11 A' 1112 1094 0.36      
12 A' 1014 997 0.17      
13 A' 972 956 2.06      
14 A' 928 913 7.19      
15 A' 892 878 2.79      
16 A' 772 759 0.57      
17 A' 763 750 7.50      
18 A' 401 395 0.79      
19 A" 3114 3062 28.10      
20 A" 3042 2992 0.94      
21 A" 2984 2934 50.21      
22 A" 1460 1436 0.05      
23 A" 1281 1260 4.86      
24 A" 1228 1208 1.34      
25 A" 1197 1177 0.10      
26 A" 1098 1080 0.04      
27 A" 1049 1032 3.52      
28 A" 1023 1006 0.00      
29 A" 980 964 4.29      
30 A" 914 899 0.24      
31 A" 792 779 12.11      
32 A" 657 646 0.18      
33 A" 257 253 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 24994.9 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 24582.5 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 PBEPBEultrafine/6-31G*
ABC
0.30267 0.20198 0.15804

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.538 0.770
C2 -0.246 -0.538 -0.770
C3 -0.246 0.997 0.784
C4 -0.246 0.997 -0.784
C5 0.945 -1.052 0.000
H6 -0.805 -1.181 1.457
H7 -0.805 -1.181 -1.457
H8 0.615 1.475 1.286
H9 0.615 1.475 -1.286
H10 -1.173 1.427 1.196
H11 -1.173 1.427 -1.196
H12 1.891 -0.492 0.000
H13 1.069 -2.140 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.53911.53562.18411.50791.09472.38422.24983.00342.21452.93042.27162.2106
C21.53912.18411.53561.50792.38421.09473.00342.24982.93042.21452.27162.2106
C31.53562.18411.56732.49612.34763.17481.10562.29201.10202.22812.71973.4908
C42.18411.53561.56732.49613.17482.34762.29201.10562.22811.10202.71973.4908
C51.50791.50792.49612.49612.28072.28072.85432.85433.47293.47291.09931.0953
H61.09472.38422.34763.17482.28072.91473.01664.07392.64683.73903.14082.5602
H72.38421.09473.17482.34762.28072.91474.07393.01663.73902.64683.14082.5602
H82.24983.00341.10562.29202.85433.01664.07392.57191.79113.05982.67363.8636
H93.00342.24982.29201.10562.85434.07393.01662.57193.05981.79112.67363.8636
H102.21452.93041.10202.22813.47292.64683.73901.79113.05982.39283.80784.3797
H112.93042.21452.22811.10203.47293.73902.64683.05981.79112.39283.80784.3797
H122.27162.27162.71972.71971.09933.14083.14082.67362.67363.80783.80781.8418
H132.21062.21063.49083.49081.09532.56022.56023.86363.86364.37974.37971.8418

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 90.525 C1 C2 C5 59.313
C1 C2 H7 128.924 C1 C3 C4 89.475
C1 C3 H8 115.861 C1 C3 H10 113.170
C1 C5 C2 61.374 C1 C5 H12 120.399
C1 C5 H13 115.331 C2 C1 C3 90.525
C2 C1 C5 59.313 C2 C1 H6 128.924
C2 C4 C3 89.475 C2 C4 H9 115.861
C2 C4 H11 113.170 C2 C5 H12 120.399
C2 C5 H13 115.331 C3 C1 C5 110.195
C3 C1 H6 125.543 C3 C4 H9 117.024
C3 C4 H11 111.999 C4 C2 C5 110.195
C4 C2 H7 125.543 C4 C3 H8 117.024
C4 C3 H10 111.999 C5 C1 H6 121.588
C5 C2 H7 121.588 H8 C3 H10 108.455
H9 C4 H11 108.455 H12 C5 H13 114.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.127      
2 C -0.127      
3 C -0.303      
4 C -0.303      
5 C -0.338      
6 H 0.141      
7 H 0.141      
8 H 0.146      
9 H 0.146      
10 H 0.155      
11 H 0.155      
12 H 0.152      
13 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.268 -0.082 0.000 0.280
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.957 0.135 -0.001
y 0.135 -30.395 -0.002
z -0.001 -0.002 -32.085
Traceless
 xyz
x 0.283 0.135 -0.001
y 0.135 1.126 -0.002
z -0.001 -0.002 -1.409
Polar
3z2-r2-2.818
x2-y2-0.562
xy0.135
xz-0.001
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.897 -0.386 -0.001
y -0.386 7.668 -0.000
z -0.001 -0.000 6.995


<r2> (average value of r2) Å2
<r2> 98.760
(<r2>)1/2 9.938