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All results from a given calculation for C5H6 (Bicyclo[2.1.0]pent-2-ene)

using model chemistry: PBEPBE/3-21G

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/3-21G
 hartrees
Energy at 0K-192.694688
Energy at 298.15K-192.700835
Nuclear repulsion energy157.977076
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/3-21G
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 3203 3174 2.81      
2 A 3181 3152 28.64      
3 A 3167 3138 3.78      
4 A 3060 3032 23.69      
5 A 1529 1515 3.75      
6 A 1455 1442 3.01      
7 A 1223 1212 2.59      
8 A 1152 1142 3.27      
9 A 1081 1071 3.01      
10 A 998 989 1.01      
11 A 934 925 5.85      
12 A 852 844 8.00      
13 A 787 780 0.60      
14 A 725 718 74.39      
15 A 425 421 7.53      
16 A 3185 3156 7.32      
17 A 3147 3118 6.32      
18 A 1264 1253 27.05      
19 A 1194 1183 0.41      
20 A 1078 1068 9.26      
21 A 1020 1010 0.75      
22 A 1013 1004 9.11      
23 A 911 902 7.48      
24 A 843 835 2.97      
25 A 832 824 0.07      
26 A 759 753 26.70      
27 A 444 440 1.80      

Unscaled Zero Point Vibrational Energy (zpe) 19729.1 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 19549.5 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 PBEPBE/3-21G
ABC
0.34781 0.21277 0.17075

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.278 1.062 0.681
C2 -0.278 1.062 -0.681
C3 -0.278 -0.480 0.778
C4 -0.278 -0.480 -0.778
C5 0.957 -0.994 0.000
H6 -0.142 1.835 1.436
H7 -0.142 1.835 -1.436
H8 -0.874 -1.109 1.435
H9 -0.874 -1.109 -1.435
H10 1.863 -0.382 0.000
H11 1.105 -2.081 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.36211.54532.12332.49341.08942.25822.37443.08992.67063.5009
C21.36212.12331.54532.49342.25821.08943.08992.37442.67063.5009
C31.54532.12331.55671.54812.41083.20691.08702.37702.28042.2544
C42.12331.54531.55671.54813.20692.41082.37701.08702.28042.2544
C52.49342.49341.54811.54813.35743.35742.32932.32931.09301.0974
H61.08942.25822.41083.20693.35742.87273.03394.17743.31564.3535
H72.25821.08943.20692.41083.35742.87274.17743.03393.31564.3535
H82.37443.08991.08702.37702.32933.03394.17742.87063.17452.6304
H93.08992.37442.37701.08702.32934.17743.03392.87063.17452.6304
H102.67062.67062.28042.28041.09303.31563.31563.17453.17451.8610
H113.50093.50092.25442.25441.09744.35354.35352.63042.63041.8610

picture of Bicyclo[2.1.0]pent-2-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 93.611 C1 C2 H7 133.897
C1 C3 C4 86.389 C1 C3 C5 107.420
C1 C3 H8 127.999 C2 C1 C3 93.611
C2 C1 H6 133.897 C2 C4 C3 86.389
C2 C4 C5 107.420 C2 C4 H9 127.999
C3 C1 H6 131.642 C3 C4 C5 59.816
C3 C4 H9 127.184 C3 C5 C4 60.368
C3 C5 H10 118.386 C3 C5 H11 115.851
C4 C2 H7 131.642 C4 C3 C5 59.816
C4 C3 H8 127.184 C4 C5 H10 118.386
C4 C5 H11 115.851 C5 C3 H8 123.296
C5 C4 H9 123.296 H10 C5 H11 116.341
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.127      
2 C -0.127      
3 C -0.295      
4 C -0.295      
5 C -0.338      
6 H 0.178      
7 H 0.178      
8 H 0.196      
9 H 0.196      
10 H 0.222      
11 H 0.213      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.222 -0.409 0.000 0.466
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.633 0.902 0.000
y 0.902 -27.803 0.000
z 0.000 0.000 -29.608
Traceless
 xyz
x -2.927 0.902 0.000
y 0.902 2.817 0.000
z 0.000 0.000 0.110
Polar
3z2-r20.220
x2-y2-3.829
xy0.902
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.918 -0.484 0.000
y -0.484 7.318 0.000
z 0.000 0.000 6.853


<r2> (average value of r2) Å2
<r2> 89.135
(<r2>)1/2 9.441