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

using model chemistry: MP2/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 MP2/cc-pVDZ
 hartrees
Energy at 0K-193.399874
Energy at 298.15K-193.406108
HF Energy-192.723748
Nuclear repulsion energy159.202799
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/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 3264 3109 6.88      
2 A 3253 3099 20.08      
3 A 3248 3094 12.01      
4 A 3144 2994 22.11      
5 A 1563 1489 3.67      
6 A 1468 1398 1.71      
7 A 1306 1244 1.05      
8 A 1208 1151 1.07      
9 A 1110 1057 1.68      
10 A 1035 986 1.99      
11 A 965 919 3.78      
12 A 864 823 2.45      
13 A 803 765 0.33      
14 A 731 696 60.53      
15 A 417 397 6.54      
16 A 3249 3095 8.56      
17 A 3219 3067 6.35      
18 A 1320 1257 19.62      
19 A 1213 1155 0.17      
20 A 1083 1031 4.80      
21 A 1040 990 0.01      
22 A 1032 983 5.38      
23 A 957 912 1.02      
24 A 870 829 9.02      
25 A 818 779 10.12      
26 A 790 753 22.06      
27 A 448 427 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 20209.2 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 19249.2 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 MP2/cc-pVDZ
ABC
0.35543 0.21619 0.17283

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.271 1.055 0.683
C2 -0.271 1.055 -0.683
C3 -0.271 -0.465 0.768
C4 -0.271 -0.465 -0.768
C5 0.932 -1.004 0.000
H6 -0.113 1.833 1.437
H7 -0.113 1.833 -1.437
H8 -0.886 -1.103 1.406
H9 -0.886 -1.103 -1.406
H10 1.862 -0.424 0.000
H11 1.048 -2.097 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.36531.52212.10102.48091.09552.26372.35813.06612.68433.4843
C21.36532.10101.52212.48092.26371.09553.06612.35812.68433.4843
C31.52212.10101.53621.52612.39873.18891.09252.34842.26782.2349
C42.10101.52211.53621.52613.18892.39872.34841.09252.26782.2349
C52.48092.48091.52611.52613.34813.34812.30082.30081.09631.0985
H61.09552.26372.39873.18893.34812.87443.03704.16043.32604.3426
H72.26371.09553.18892.39873.34812.87444.16043.03703.32604.3426
H82.35813.06611.09252.34842.30083.03704.16042.81303.16112.5898
H93.06612.35812.34841.09252.30084.16043.03702.81303.16112.5898
H102.68432.68432.26782.26781.09633.32603.32603.16113.16111.8599
H113.48433.48432.23492.23491.09854.34264.34262.58982.58981.8599

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 93.220 C1 C2 H7 133.533
C1 C3 C4 86.780 C1 C3 C5 108.957
C1 C3 H8 128.060 C2 C1 C3 93.220
C2 C1 H6 133.533 C2 C4 C3 86.780
C2 C4 C5 108.957 C2 C4 H9 128.060
C3 C1 H6 132.113 C3 C4 C5 59.779
C3 C4 H9 125.753 C3 C5 C4 60.442
C3 C5 H10 118.802 C3 C5 H11 115.798
C4 C2 H7 132.113 C4 C3 C5 59.779
C4 C3 H8 125.753 C4 C5 H10 118.802
C4 C5 H11 115.798 C5 C3 H8 122.081
C5 C4 H9 122.081 H10 C5 H11 115.870
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability