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

using model chemistry: MP2=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-193.438534
Energy at 298.15K-193.444844
HF Energy-192.725467
Nuclear repulsion energy160.538176
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 MP2=FULL/6-31+G**
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 3302 3101 4.37      
2 A 3292 3092 37.52      
3 A 3287 3087 1.87      
4 A 3186 2992 23.02      
5 A 1581 1485 7.74      
6 A 1520 1428 2.19      
7 A 1331 1250 1.34      
8 A 1231 1156 1.21      
9 A 1140 1071 1.97      
10 A 1066 1001 2.48      
11 A 989 929 4.51      
12 A 881 828 2.04      
13 A 834 783 0.39      
14 A 750 704 81.56      
15 A 430 404 8.77      
16 A 3287 3087 10.55      
17 A 3262 3063 6.62      
18 A 1352 1269 21.10      
19 A 1256 1180 0.10      
20 A 1116 1048 4.97      
21 A 1071 1006 10.22      
22 A 1068 1003 0.24      
23 A 973 914 1.31      
24 A 885 831 10.97      
25 A 827 777 12.45      
26 A 805 756 23.12      
27 A 454 427 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 20587.8 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 19336.0 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 MP2=FULL/6-31+G**
ABC
0.36180 0.21944 0.17545

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.269 1.048 0.678
C2 -0.269 1.048 -0.678
C3 -0.269 -0.460 0.761
C4 -0.269 -0.460 -0.761
C5 0.925 -1.000 0.000
H6 -0.112 1.815 1.425
H7 -0.112 1.815 -1.425
H8 -0.877 -1.089 1.394
H9 -0.877 -1.089 -1.394
H10 1.846 -0.431 0.000
H11 1.042 -2.078 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.35591.51062.08452.46541.08152.24332.33403.03752.66883.4571
C21.35592.08451.51062.46542.24331.08153.03752.33402.66883.4571
C31.51062.08451.52161.51502.37493.15841.07922.32512.24842.2170
C42.08451.51061.52161.51503.15842.37492.32511.07922.24842.2170
C52.46542.46541.51501.51503.32023.32022.27952.27951.08301.0849
H61.08152.24332.37493.15843.32022.84903.00254.11783.30254.3028
H72.24331.08153.15842.37493.32022.84904.11783.00253.30254.3028
H82.33403.03751.07922.32512.27953.00254.11782.78733.12912.5697
H93.03752.33402.32511.07922.27954.11783.00252.78733.12912.5697
H102.66882.66882.24842.24841.08303.30253.30253.12913.12911.8332
H113.45713.45712.21702.21701.08494.30284.30282.56972.56971.8332

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 93.146 C1 C2 H7 133.656
C1 C3 C4 86.854 C1 C3 C5 109.140
C1 C3 H8 127.849 C2 C1 C3 93.146
C2 C1 H6 133.656 C2 C4 C3 86.854
C2 C4 C5 109.140 C2 C4 H9 127.849
C3 C1 H6 132.051 C3 C4 C5 59.855
C3 C4 H9 125.902 C3 C5 C4 60.290
C3 C5 H10 118.929 C3 C5 H11 116.039
C4 C2 H7 132.051 C4 C3 C5 59.855
C4 C3 H8 125.902 C4 C5 H10 118.929
C4 C5 H11 116.039 C5 C3 H8 122.072
C5 C4 H9 122.072 H10 C5 H11 115.480
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability