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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-195.227262
Energy at 298.15K-195.236432
Nuclear repulsion energy176.158828
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 B3PW91/6-31G**
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' 3221 3087 23.41      
2 A' 3202 3069 8.99      
3 A' 3137 3007 47.71      
4 A' 3118 2988 21.90      
5 A' 3068 2941 59.71      
6 A' 1517 1454 1.13      
7 A' 1496 1433 2.17      
8 A' 1384 1326 0.69      
9 A' 1258 1205 1.45      
10 A' 1222 1171 0.24      
11 A' 1142 1094 0.32      
12 A' 1042 999 0.13      
13 A' 995 954 2.51      
14 A' 958 918 8.15      
15 A' 922 883 0.76      
16 A' 793 760 3.79      
17 A' 787 755 5.03      
18 A' 415 397 0.72      
19 A" 3193 3060 25.03      
20 A" 3120 2990 0.52      
21 A" 3060 2932 50.30      
22 A" 1487 1425 0.10      
23 A" 1321 1266 5.07      
24 A" 1265 1212 1.35      
25 A" 1228 1177 0.04      
26 A" 1128 1081 0.05      
27 A" 1085 1040 3.41      
28 A" 1062 1018 0.15      
29 A" 1006 964 4.17      
30 A" 939 900 0.20      
31 A" 812 779 13.90      
32 A" 681 653 0.13      
33 A" 265 254 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 25663.9 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 24596.3 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 B3PW91/6-31G**
ABC
0.30638 0.20419 0.15991

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 -0.537 0.764
C2 -0.245 -0.537 -0.764
C3 -0.245 0.992 0.780
C4 -0.245 0.992 -0.780
C5 0.942 -1.045 0.000
H6 -0.798 -1.175 1.446
H7 -0.798 -1.175 -1.446
H8 0.608 1.466 1.279
H9 0.608 1.466 -1.279
H10 -1.165 1.417 1.189
H11 -1.165 1.417 -1.189
H12 1.877 -0.486 0.000
H13 1.067 -2.124 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52701.52892.17221.49971.08582.36572.23722.98512.20152.91152.25632.1966
C21.52702.17221.52891.49972.36571.08582.98512.23722.91152.20152.25632.1966
C31.52892.17221.55932.48282.33373.15551.09642.27821.09322.21412.70113.4699
C42.17221.52891.55932.48283.15552.33372.27821.09642.21411.09322.70113.4699
C51.49971.49972.48282.48282.26582.26582.83732.83733.45173.45171.09021.0867
H61.08582.36572.33373.15552.26582.89292.99674.04712.63123.71493.11832.5438
H72.36571.08583.15552.33372.26582.89294.04712.99673.71492.63123.11832.5438
H82.23722.98511.09642.27822.83732.99674.04712.55761.77663.03922.65603.8386
H92.98512.23722.27821.09642.83734.04712.99672.55763.03921.77662.65603.8386
H102.20152.91151.09322.21413.45172.63123.71491.77663.03922.37733.78064.3521
H112.91152.20152.21411.09323.45173.71492.63123.03921.77662.37733.78064.3521
H122.25632.25632.70112.70111.09023.11833.11832.65602.65603.78063.78061.8279
H132.19662.19663.46993.46991.08672.54382.54383.83863.83864.35214.35211.8279

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 90.606 C1 C2 C5 59.396
C1 C2 H7 128.972 C1 C3 C4 89.394
C1 C3 H8 115.922 C1 C3 H10 113.149
C1 C5 C2 61.208 C1 C5 H12 120.369
C1 C5 H13 115.340 C2 C1 C3 90.606
C2 C1 C5 59.396 C2 C1 H6 128.972
C2 C4 C3 89.394 C2 C4 H9 115.922
C2 C4 H11 113.149 C2 C5 H12 120.369
C2 C5 H13 115.340 C3 C1 C5 110.122
C3 C1 H6 125.532 C3 C4 H9 117.080
C3 C4 H11 111.968 C4 C2 C5 110.122
C4 C2 H7 125.532 C4 C3 H8 117.080
C4 C3 H10 111.968 C5 C1 H6 121.583
C5 C2 H7 121.583 H8 C3 H10 108.459
H9 C4 H11 108.459 H12 C5 H13 114.211
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.121      
2 C -0.121      
3 C -0.240      
4 C -0.240      
5 C -0.271      
6 H 0.117      
7 H 0.117      
8 H 0.120      
9 H 0.120      
10 H 0.130      
11 H 0.130      
12 H 0.124      
13 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.255 -0.067 0.000 0.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.785 0.140 0.000
y 0.140 -30.199 0.000
z 0.000 0.000 -31.881
Traceless
 xyz
x 0.255 0.140 0.000
y 0.140 1.134 0.000
z 0.000 0.000 -1.389
Polar
3z2-r2-2.778
x2-y2-0.586
xy0.140
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> 97.699
(<r2>)1/2 9.884