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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-192.856471
Energy at 298.15K-192.862777
Nuclear repulsion energy159.474120
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 B1B95/3-21G
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 3297 3155 1.92      
2 A 3275 3133 22.08      
3 A 3258 3117 3.99      
4 A 3153 3017 19.67      
5 A 1594 1525 4.06      
6 A 1496 1432 3.63      
7 A 1271 1216 2.57      
8 A 1192 1140 3.55      
9 A 1113 1065 2.96      
10 A 1027 982 1.43      
11 A 962 921 5.54      
12 A 909 870 7.02      
13 A 819 783 0.07      
14 A 757 725 81.26      
15 A 441 422 7.63      
16 A 3279 3137 5.41      
17 A 3241 3101 4.45      
18 A 1308 1251 27.96      
19 A 1234 1181 0.48      
20 A 1124 1076 7.60      
21 A 1062 1016 7.48      
22 A 1053 1008 4.70      
23 A 953 912 8.87      
24 A 886 847 1.03      
25 A 858 821 0.02      
26 A 785 751 28.85      
27 A 460 440 1.68      

Unscaled Zero Point Vibrational Energy (zpe) 20404.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19520.8 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 B1B95/3-21G
ABC
0.35427 0.21671 0.17421

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.277 1.052 0.674
C2 -0.277 1.052 -0.674
C3 -0.277 -0.480 0.769
C4 -0.277 -0.480 -0.769
C5 0.952 -0.979 0.000
H6 -0.153 1.819 1.422
H7 -0.153 1.819 -1.422
H8 -0.859 -1.102 1.427
H9 -0.859 -1.102 -1.427
H10 1.841 -0.361 0.000
H11 1.112 -2.053 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.34721.53502.10462.46671.07892.23512.35503.06472.63313.4675
C21.34722.10461.53502.46672.23511.07893.06472.35502.63313.4675
C31.53502.10461.53881.53292.39323.17871.07652.35632.25642.2349
C42.10461.53501.53881.53293.17872.39322.35631.07652.25642.2349
C52.46672.46671.53291.53293.32713.32712.30942.30941.08271.0867
H61.07892.23512.39323.17873.32712.84403.00504.14123.27894.3148
H72.23511.07893.17872.39323.32712.84404.14123.00503.27894.3148
H82.35503.06471.07652.35632.30943.00504.14122.85483.14312.6132
H93.06472.35502.35631.07652.30944.14123.00502.85483.14312.6132
H102.63312.63312.25642.25641.08273.27893.27893.14313.14311.8430
H113.46753.46752.23492.23491.08674.31484.31482.61322.61321.8430

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 93.578 C1 C2 H7 133.923
C1 C3 C4 86.422 C1 C3 C5 107.038
C1 C3 H8 127.917 C2 C1 C3 93.578
C2 C1 H6 133.923 C2 C4 C3 86.422
C2 C4 C5 107.038 C2 C4 H9 127.917
C3 C1 H6 131.796 C3 C4 C5 59.872
C3 C4 H9 127.678 C3 C5 C4 60.256
C3 C5 H10 118.216 C3 C5 H11 116.071
C4 C2 H7 131.796 C4 C3 C5 59.872
C4 C3 H8 127.678 C4 C5 H10 118.216
C4 C5 H11 116.071 C5 C3 H8 123.568
C5 C4 H9 123.568 H10 C5 H11 116.323
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.137      
2 C -0.137      
3 C -0.317      
4 C -0.317      
5 C -0.345      
6 H 0.192      
7 H 0.192      
8 H 0.208      
9 H 0.208      
10 H 0.230      
11 H 0.221      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.218 -0.379 0.000 0.437
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.553 0.851 0.000
y 0.851 -27.660 0.000
z 0.000 0.000 -29.454
Traceless
 xyz
x -2.996 0.851 0.000
y 0.851 2.844 0.000
z 0.000 0.000 0.152
Polar
3z2-r20.305
x2-y2-3.893
xy0.851
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.803 -0.470 0.000
y -0.470 7.029 0.000
z 0.000 0.000 6.738


<r2> (average value of r2) Å2
<r2> 87.731
(<r2>)1/2 9.366