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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-193.383436
Energy at 298.15K-193.389785
HF Energy-192.709622
Nuclear repulsion energy160.188585
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 MP3/6-31G*
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 3282 3081 8.24      
2 A 3272 3072 35.30      
3 A 3261 3061 2.35      
4 A 3174 2979 22.68      
5 A 1650 1549 3.82      
6 A 1536 1442 1.10      
7 A 1359 1275 0.55      
8 A 1245 1169 1.44      
9 A 1148 1078 1.39      
10 A 1072 1006 1.73      
11 A 996 935 2.98      
12 A 921 865 3.69      
13 A 845 793 0.12      
14 A 756 709 63.03      
15 A 436 410 6.13      
16 A 3265 3064 16.25      
17 A 3248 3048 4.40      
18 A 1364 1280 20.70      
19 A 1267 1189 0.32      
20 A 1131 1061 5.12      
21 A 1101 1034 5.01      
22 A 1078 1012 1.92      
23 A 981 920 2.29      
24 A 899 844 9.39      
25 A 846 794 4.70      
26 A 814 764 25.25      
27 A 467 438 1.94      

Unscaled Zero Point Vibrational Energy (zpe) 20706.5 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 19435.2 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 MP3/6-31G*
ABC
0.36320 0.21708 0.17419

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.268 1.056 0.673
C2 -0.268 1.056 -0.673
C3 -0.268 -0.462 0.760
C4 -0.268 -0.462 -0.760
C5 0.924 -1.010 0.000
H6 -0.117 1.824 1.425
H7 -0.117 1.824 -1.425
H8 -0.885 -1.083 1.400
H9 -0.885 -1.083 -1.400
H10 1.860 -0.458 0.000
H11 1.031 -2.094 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.34601.52102.08772.47811.08542.23922.34173.04172.69713.4732
C21.34602.08771.52102.47812.23921.08543.04172.34172.69713.4732
C31.52102.08771.51951.51552.38623.16611.08412.33022.25972.2195
C42.08771.52101.51951.51553.16612.38622.33021.08412.25972.2195
C52.47812.47811.51551.51553.33863.33862.28812.28811.08731.0893
H61.08542.23922.38623.16613.33862.84993.00674.12553.33914.3245
H72.23921.08543.16612.38623.33862.84994.12553.00673.33914.3245
H82.34173.04171.08412.33022.28813.00674.12552.79993.14422.5793
H93.04172.34172.33021.08412.28814.12553.00672.79993.14422.5793
H102.69712.69712.25972.25971.08733.33913.33913.14423.14421.8342
H113.47323.47322.21952.21951.08934.32454.32452.57932.57931.8342

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 93.270 C1 C2 H7 133.849
C1 C3 C4 86.730 C1 C3 C5 109.401
C1 C3 H8 127.224 C2 C1 C3 93.270
C2 C1 H6 133.849 C2 C4 C3 86.730
C2 C4 C5 109.401 C2 C4 H9 127.224
C3 C1 H6 131.836 C3 C4 C5 59.911
C3 C4 H9 126.193 C3 C5 C4 60.177
C3 C5 H10 119.595 C3 C5 H11 115.918
C4 C2 H7 131.836 C4 C3 C5 59.911
C4 C3 H8 126.193 C4 C5 H10 119.595
C4 C5 H11 115.918 C5 C3 H8 122.461
C5 C4 H9 122.461 H10 C5 H11 114.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability