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

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-193.436141
Energy at 298.15K-193.442514
HF Energy-192.720815
Nuclear repulsion energy160.372080
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 CCD/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 3305 3099 7.41      
2 A 3295 3089 41.77      
3 A 3284 3079 2.03      
4 A 3191 2992 25.15      
5 A 1647 1544 4.15      
6 A 1542 1446 0.48      
7 A 1362 1277 0.20      
8 A 1247 1169 1.20      
9 A 1150 1078 1.18      
10 A 1070 1004 1.75      
11 A 997 935 2.57      
12 A 925 867 3.38      
13 A 843 790 0.08      
14 A 758 710 55.39      
15 A 437 409 4.89      
16 A 3286 3081 18.11      
17 A 3269 3065 5.41      
18 A 1372 1286 17.41      
19 A 1273 1193 0.19      
20 A 1141 1070 3.33      
21 A 1105 1036 4.65      
22 A 1082 1014 1.00      
23 A 982 921 2.49      
24 A 906 850 8.68      
25 A 845 792 3.79      
26 A 815 764 21.56      
27 A 467 438 1.94      

Unscaled Zero Point Vibrational Energy (zpe) 20797.0 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 19499.2 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 CCD/6-31G**
ABC
0.36370 0.21765 0.17452

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.268 1.055 0.673
C2 -0.268 1.055 -0.673
C3 -0.268 -0.463 0.759
C4 -0.268 -0.463 -0.759
C5 0.923 -1.007 0.000
H6 -0.120 1.821 1.422
H7 -0.120 1.821 -1.422
H8 -0.878 -1.082 1.399
H9 -0.878 -1.082 -1.399
H10 1.855 -0.456 0.000
H11 1.032 -2.087 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.34691.52032.08732.47531.08092.23562.33803.03902.69153.4664
C21.34692.08731.52032.47532.23561.08093.03902.33802.69153.4664
C31.52032.08731.51881.51412.38263.16151.07942.32702.25492.2145
C42.08731.52031.51881.51413.16152.38262.32701.07942.25492.2145
C52.47532.47531.51411.51413.33333.33332.28212.28211.08291.0850
H61.08092.23562.38263.16153.33332.84323.00074.11833.33274.3153
H72.23561.08093.16152.38263.33332.84324.11833.00073.33274.3153
H82.33803.03901.07942.32702.28213.00074.11832.79843.13372.5718
H93.03902.33802.32701.07942.28214.11833.00072.79843.13372.5718
H102.69152.69152.25492.25491.08293.33273.33273.13373.13371.8274
H113.46643.46642.21452.21451.08504.31534.31532.57182.57181.8274

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 93.239 C1 C2 H7 133.797
C1 C3 C4 86.761 C1 C3 C5 109.320
C1 C3 H8 127.329 C2 C1 C3 93.239
C2 C1 H6 133.797 C2 C4 C3 86.761
C2 C4 C5 109.320 C2 C4 H9 127.329
C3 C1 H6 131.949 C3 C4 C5 59.899
C3 C4 H9 126.355 C3 C5 C4 60.203
C3 C5 H10 119.588 C3 C5 H11 115.879
C4 C2 H7 131.949 C4 C3 C5 59.899
C4 C3 H8 126.355 C4 C5 H10 119.588
C4 C5 H11 115.879 C5 C3 H8 122.378
C5 C4 H9 122.378 H10 C5 H11 114.901
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability