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

using model chemistry: BLYP/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-195.172348
Energy at 298.15K-195.181356
Nuclear repulsion energy174.411523
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(2df,p)
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' 3116 3099 32.54      
2 A' 3098 3081 8.57      
3 A' 3031 3014 53.82      
4 A' 3018 3001 24.99      
5 A' 2966 2950 67.15      
6 A' 1466 1458 0.54      
7 A' 1442 1434 0.73      
8 A' 1318 1310 2.14      
9 A' 1199 1192 0.50      
10 A' 1180 1173 0.31      
11 A' 1097 1091 0.48      
12 A' 998 992 0.03      
13 A' 951 946 2.25      
14 A' 906 901 5.51      
15 A' 874 869 1.39      
16 A' 760 756 1.05      
17 A' 742 738 4.75      
18 A' 401 399 0.47      
19 A" 3091 3074 30.55      
20 A" 3012 2996 1.81      
21 A" 2958 2942 52.31      
22 A" 1444 1436 0.05      
23 A" 1263 1256 2.40      
24 A" 1223 1216 0.28      
25 A" 1189 1183 0.02      
26 A" 1090 1084 0.00      
27 A" 1045 1039 2.67      
28 A" 1024 1018 0.00      
29 A" 963 957 2.60      
30 A" 908 903 0.05      
31 A" 769 765 8.69      
32 A" 664 660 0.00      
33 A" 262 260 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 24732.8 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 24596.8 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(2df,p)
ABC
0.30009 0.20016 0.15635

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.247 -0.542 0.773
C2 -0.247 -0.542 -0.773
C3 -0.247 1.003 0.790
C4 -0.247 1.003 -0.790
C5 0.949 -1.059 0.000
H6 -0.802 -1.181 1.461
H7 -0.802 -1.181 -1.461
H8 0.612 1.480 1.289
H9 0.612 1.480 -1.289
H10 -1.172 1.433 1.202
H11 -1.172 1.433 -1.202
H12 1.893 -0.502 0.000
H13 1.073 -2.144 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54681.54522.19791.51521.09042.38952.25713.01382.22182.94172.27602.2152
C21.54682.19791.54521.51522.38951.09043.01382.25712.94172.22182.27602.2152
C31.54522.19791.57942.51112.35103.18491.10262.29971.09922.23702.73323.5030
C42.19791.54521.57942.51113.18492.35102.29971.10262.23701.09922.73323.5030
C51.51521.51522.51112.51112.28392.28392.86752.86753.48523.48521.09581.0923
H61.09042.38952.35103.18492.28392.92263.01834.08002.65183.74913.13982.5650
H72.38951.09043.18492.35102.28392.92264.08003.01833.74912.65183.13982.5650
H82.25713.01381.10262.29972.86753.01834.08002.57861.78633.06402.68973.8744
H93.01382.25712.29971.10262.86754.08003.01832.57863.06401.78632.68973.8744
H102.22182.94171.09922.23703.48522.65183.74911.78633.06402.40343.81824.3901
H112.94172.22182.23701.09923.48523.74912.65183.06401.78632.40343.81824.3901
H122.27602.27602.73322.73321.09583.13983.13982.68972.68973.81823.81821.8350
H132.21522.21523.50303.50301.09232.56502.56503.87443.87444.39014.39011.8350

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 90.605 C1 C2 C5 59.309
C1 C2 H7 129.118 C1 C3 C4 89.395
C1 C3 H8 115.950 C1 C3 H10 113.239
C1 C5 C2 61.382 C1 C5 H12 120.460
C1 C5 H13 115.368 C2 C1 C3 90.605
C2 C1 C5 59.309 C2 C1 H6 129.118
C2 C4 C3 89.395 C2 C4 H9 115.950
C2 C4 H11 113.239 C2 C5 H12 120.460
C2 C5 H13 115.368 C3 C1 C5 110.268
C3 C1 H6 125.377 C3 C4 H9 116.944
C3 C4 H11 112.012 C4 C2 C5 110.268
C4 C2 H7 125.377 C4 C3 H8 116.944
C4 C3 H10 112.012 C5 C1 H6 121.602
C5 C2 H7 121.602 H8 C3 H10 108.442
H9 C4 H11 108.442 H12 C5 H13 113.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.004      
2 C 0.004      
3 C -0.189      
4 C -0.189      
5 C -0.232      
6 H 0.058      
7 H 0.058      
8 H 0.075      
9 H 0.075      
10 H 0.083      
11 H 0.083      
12 H 0.082      
13 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.238 -0.088 0.000 0.254
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.235 0.131 0.000
y 0.131 -30.850 0.000
z 0.000 0.000 -32.190
Traceless
 xyz
x 0.285 0.131 0.000
y 0.131 0.863 0.000
z 0.000 0.000 -1.147
Polar
3z2-r2-2.295
x2-y2-0.385
xy0.131
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.113 -0.428 0.000
y -0.428 7.951 0.000
z 0.000 0.000 7.296


<r2> (average value of r2) Å2
<r2> 99.606
(<r2>)1/2 9.980