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

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-195.082579
Energy at 298.15K-195.091603
HF Energy-195.082579
Nuclear repulsion energy175.598154
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 PBEPBE/Def2TZVPP
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' 3131 3093 21.24      
2 A' 3110 3072 9.08      
3 A' 3047 3010 41.50      
4 A' 3028 2991 24.17      
5 A' 2978 2942 66.70      
6 A' 1454 1436 1.54      
7 A' 1431 1414 3.02      
8 A' 1326 1310 0.71      
9 A' 1197 1182 1.93      
10 A' 1179 1164 0.02      
11 A' 1099 1086 0.68      
12 A' 1002 990 0.42      
13 A' 963 951 2.62      
14 A' 918 907 6.49      
15 A' 880 870 1.99      
16 A' 761 752 0.33      
17 A' 756 746 8.22      
18 A' 403 398 0.56      
19 A" 3102 3065 24.63      
20 A" 3028 2992 1.43      
21 A" 2970 2934 50.27      
22 A" 1428 1411 0.74      
23 A" 1261 1246 6.70      
24 A" 1218 1203 1.42      
25 A" 1184 1169 0.04      
26 A" 1086 1073 0.07      
27 A" 1038 1025 3.15      
28 A" 1015 1003 0.63      
29 A" 971 959 4.55      
30 A" 906 895 0.19      
31 A" 786 776 14.20      
32 A" 661 653 0.18      
33 A" 259 256 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 24786.0 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 24486.1 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 PBEPBE/Def2TZVPP
ABC
0.30419 0.20320 0.15888

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 -0.538 0.765
C2 -0.245 -0.538 -0.765
C3 -0.245 0.996 0.783
C4 -0.245 0.996 -0.783
C5 0.942 -1.049 0.000
H6 -0.800 -1.178 1.450
H7 -0.800 -1.178 -1.450
H8 0.612 1.468 1.283
H9 0.612 1.468 -1.283
H10 -1.169 1.423 1.193
H11 -1.169 1.423 -1.193
H12 1.880 -0.487 0.000
H13 1.069 -2.132 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52971.53422.17931.50181.08932.37142.24282.99272.20922.92042.25912.2027
C21.52972.17931.53421.50182.37141.08932.99272.24282.92042.20922.25912.2027
C31.53422.17931.56602.49062.34073.16561.09972.28661.09652.22202.70673.4816
C42.17931.53421.56602.49063.16562.34072.28661.09972.22201.09652.70673.4816
C51.50181.50182.49062.49062.27022.27022.84432.84433.46193.46191.09341.0902
H61.08932.37142.34073.16562.27022.90053.00424.05832.63953.72623.12432.5507
H72.37141.08933.16562.34072.27022.90054.05833.00423.72622.63953.12432.5507
H82.24282.99271.09972.28662.84433.00424.05832.56671.78403.05032.65953.8488
H92.99272.24282.28661.09972.84434.05833.00422.56673.05031.78402.65953.8488
H102.20922.92041.09652.22203.46192.63953.72621.78403.05032.38503.78944.3661
H112.92042.20922.22201.09653.46193.72622.63953.05031.78402.38503.78944.3661
H122.25912.25912.70672.70671.09343.12433.12432.65952.65953.78943.78941.8338
H132.20272.20273.48163.48161.09022.55072.55073.84883.84884.36614.36611.8338

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 90.678 C1 C2 C5 59.384
C1 C2 H7 128.990 C1 C3 C4 89.322
C1 C3 H8 115.774 C1 C3 H10 113.182
C1 C5 C2 61.233 C1 C5 H12 120.211
C1 C5 H13 115.470 C2 C1 C3 90.678
C2 C1 C5 59.384 C2 C1 H6 128.990
C2 C4 C3 89.322 C2 C4 H9 115.774
C2 C4 H11 113.182 C2 C5 H12 120.211
C2 C5 H13 115.470 C3 C1 C5 110.241
C3 C1 H6 125.448 C3 C4 H9 117.064
C3 C4 H11 111.930 C4 C2 C5 110.241
C4 C2 H7 125.448 C4 C3 H8 117.064
C4 C3 H10 111.930 C5 C1 H6 121.541
C5 C2 H7 121.541 H8 C3 H10 108.648
H9 C4 H11 108.648 H12 C5 H13 114.238
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.080      
2 C -0.080      
3 C -0.100      
4 C -0.100      
5 C -0.141      
6 H 0.072      
7 H 0.072      
8 H 0.056      
9 H 0.056      
10 H 0.056      
11 H 0.056      
12 H 0.066      
13 H 0.067      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.257 -0.082 0.000 0.270
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.676 0.146 0.000
y 0.146 -31.269 0.000
z 0.000 0.000 -32.807
Traceless
 xyz
x 0.362 0.146 0.000
y 0.146 0.972 0.000
z 0.000 0.000 -1.334
Polar
3z2-r2-2.668
x2-y2-0.407
xy0.146
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.983 -0.433 0.000
y -0.433 8.886 0.000
z 0.000 0.000 8.346


<r2> (average value of r2) Å2
<r2> 98.773
(<r2>)1/2 9.938