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

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-195.223948
Energy at 298.15K-195.233157
Nuclear repulsion energy174.652790
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 B3LYP/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' 3231 3108 37.05      
2 A' 3215 3092 0.65      
3 A' 3134 3015 64.85      
4 A' 3127 3008 14.59      
5 A' 3069 2952 58.69      
6 A' 1546 1487 1.42      
7 A' 1522 1464 3.30      
8 A' 1377 1324 0.71      
9 A' 1258 1210 1.83      
10 A' 1230 1183 0.44      
11 A' 1143 1099 0.76      
12 A' 1050 1010 0.04      
13 A' 987 950 3.86      
14 A' 952 916 7.22      
15 A' 912 877 1.12      
16 A' 801 771 2.15      
17 A' 767 738 7.96      
18 A' 425 408 0.75      
19 A" 3210 3088 22.22      
20 A" 3114 2996 0.42      
21 A" 3059 2943 51.94      
22 A" 1528 1470 0.52      
23 A" 1319 1268 6.23      
24 A" 1300 1251 0.81      
25 A" 1239 1192 0.13      
26 A" 1152 1108 0.75      
27 A" 1122 1079 4.30      
28 A" 1081 1040 2.02      
29 A" 1003 965 4.02      
30 A" 950 914 0.00      
31 A" 792 762 15.59      
32 A" 707 680 0.01      
33 A" 275 264 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 25796.6 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 24816.3 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 B3LYP/6-31G
ABC
0.30059 0.20064 0.15662

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.248 -0.542 0.774
C2 -0.248 -0.542 -0.774
C3 -0.248 1.002 0.789
C4 -0.248 1.002 -0.789
C5 0.949 -1.059 0.000
H6 -0.802 -1.171 1.460
H7 -0.802 -1.171 -1.460
H8 0.611 1.474 1.281
H9 0.611 1.474 -1.281
H10 -1.166 1.430 1.202
H11 -1.166 1.430 -1.202
H12 1.883 -0.499 0.000
H13 1.085 -2.137 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54851.54392.19721.51671.08332.38642.24863.00372.21622.93862.26782.2179
C21.54852.19721.54391.51672.38641.08333.00372.24862.93862.21622.26782.2179
C31.54392.19721.57822.51092.34123.17631.09612.29001.09362.23412.72373.5001
C42.19721.54391.57822.51093.17632.34122.29001.09612.23411.09362.72373.5001
C51.51671.51672.51092.51092.28282.28282.85832.85833.48033.48031.08871.0861
H61.08332.38642.34123.17632.28282.91983.00414.06242.63873.73953.12942.5736
H72.38641.08333.17632.34122.28282.91984.06243.00413.73952.63873.12942.5736
H82.24863.00371.09612.29002.85833.00414.06242.56141.77893.05352.67443.8600
H93.00372.24862.29001.09612.85834.06243.00412.56143.05351.77892.67443.8600
H102.21622.93861.09362.23413.48032.63873.73951.77893.05352.40463.80294.3850
H112.93862.21622.23411.09363.48033.73952.63873.05351.77892.40463.80294.3850
H122.26782.26782.72372.72371.08873.12943.12942.67442.67443.80293.80291.8216
H132.21792.21793.50013.50011.08612.57362.57363.86003.86004.38504.38501.8216

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 90.552 C1 C2 C5 59.304
C1 C2 H7 129.265 C1 C3 C4 89.448
C1 C3 H8 115.758 C1 C3 H10 113.227
C1 C5 C2 61.392 C1 C5 H12 120.114
C1 C5 H13 115.902 C2 C1 C3 90.552
C2 C1 C5 59.304 C2 C1 H6 129.265
C2 C4 C3 89.448 C2 C4 H9 115.758
C2 C4 H11 113.227 C2 C5 H12 120.114
C2 C5 H13 115.902 C3 C1 C5 110.241
C3 C1 H6 125.103 C3 C4 H9 116.647
C3 C4 H11 112.199 C4 C2 C5 110.241
C4 C2 H7 125.103 C4 C3 H8 116.647
C4 C3 H10 112.199 C5 C1 H6 121.915
C5 C2 H7 121.915 H8 C3 H10 108.663
H9 C4 H11 108.663 H12 C5 H13 113.773
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.144      
2 C -0.144      
3 C -0.240      
4 C -0.240      
5 C -0.273      
6 H 0.126      
7 H 0.126      
8 H 0.126      
9 H 0.126      
10 H 0.134      
11 H 0.134      
12 H 0.132      
13 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.268 -0.073 0.000 0.277
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.286 0.123 0.000
y 0.123 -30.611 0.000
z 0.000 0.000 -32.317
Traceless
 xyz
x 0.178 0.123 0.000
y 0.123 1.191 0.000
z 0.000 0.000 -1.369
Polar
3z2-r2-2.739
x2-y2-0.675
xy0.123
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.535 0.000 -0.059
y 0.000 6.829 0.001
z -0.059 0.001 6.540


<r2> (average value of r2) Å2
<r2> 99.363
(<r2>)1/2 9.968