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

using model chemistry: CCD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-193.437406
Energy at 298.15K-193.443701
HF Energy-192.724272
Nuclear repulsion energy159.006979
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/cc-pVDZ
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 3254 3113 3.35      
2 A 3245 3105 38.71      
3 A 3235 3095 0.83      
4 A 3139 3003 23.44      
5 A 1618 1548 3.91      
6 A 1486 1422 1.22      
7 A 1328 1271 0.28      
8 A 1218 1165 0.84      
9 A 1114 1066 1.43      
10 A 1036 991 1.55      
11 A 970 928 3.31      
12 A 897 858 2.81      
13 A 810 775 0.19      
14 A 740 708 57.79      
15 A 426 408 5.57      
16 A 3237 3097 13.00      
17 A 3216 3077 4.94      
18 A 1335 1277 18.65      
19 A 1227 1174 0.26      
20 A 1104 1056 3.39      
21 A 1057 1011 1.79      
22 A 1049 1004 3.69      
23 A 958 916 2.14      
24 A 895 856 7.41      
25 A 833 797 3.26      
26 A 797 762 25.74      
27 A 458 438 1.56      

Unscaled Zero Point Vibrational Energy (zpe) 20340.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19459.4 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/cc-pVDZ
ABC
0.35681 0.21453 0.17192

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.270 1.061 0.679
C2 -0.270 1.061 -0.679
C3 -0.270 -0.467 0.767
C4 -0.270 -0.467 -0.767
C5 0.932 -1.011 0.000
H6 -0.127 1.840 1.436
H7 -0.127 1.840 -1.436
H8 -0.885 -1.097 1.414
H9 -0.885 -1.097 -1.414
H10 1.871 -0.444 0.000
H11 1.041 -2.104 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.35771.53102.10392.48991.09572.25812.36213.06922.70423.4932
C21.35772.10391.53102.48992.25811.09573.06922.36212.70423.4932
C31.53102.10391.53361.52602.40693.19331.09322.35232.27472.2335
C42.10391.53101.53361.52603.19332.40692.35231.09322.27472.2335
C52.48992.48991.52601.52603.36363.36362.30462.30461.09701.0991
H61.09572.25812.40693.19333.36362.87153.03434.16283.35794.3577
H72.25811.09573.19332.40693.36362.87154.16283.03433.35794.3577
H82.36213.06921.09322.35232.30463.03434.16282.82863.16662.5936
H93.06922.36212.35231.09322.30464.16283.03432.82863.16662.5936
H102.70422.70422.27472.27471.09703.35793.35793.16663.16661.8562
H113.49323.49322.23352.23351.09914.35774.35772.59362.59361.8562

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 93.294 C1 C2 H7 133.696
C1 C3 C4 86.706 C1 C3 C5 109.073
C1 C3 H8 127.558 C2 C1 C3 93.294
C2 C1 H6 133.696 C2 C4 C3 86.706
C2 C4 C5 109.073 C2 C4 H9 127.558
C3 C1 H6 132.091 C3 C4 C5 59.834
C3 C4 H9 126.319 C3 C5 C4 60.332
C3 C5 H10 119.373 C3 C5 H11 115.647
C4 C2 H7 132.091 C4 C3 C5 59.834
C4 C3 H8 126.319 C4 C5 H10 119.373
C4 C5 H11 115.647 C5 C3 H8 122.392
C5 C4 H9 122.392 H10 C5 H11 115.394
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability