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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-193.386619
Energy at 298.15K-193.392959
HF Energy-192.709381
Nuclear repulsion energy160.122936
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' 3258 3083 8.11      
2 A' 3248 3075 36.71      
3 A' 3236 3063 2.83      
4 A' 3150 2981 22.89      
5 A' 1639 1551 3.64      
6 A' 1530 1449 1.05      
7 A' 1356 1283 0.47      
8 A' 1242 1176 1.43      
9 A' 1143 1082 1.29      
10 A' 1068 1011 1.67      
11 A' 993 940 2.99      
12 A' 919 869 3.72      
13 A' 841 796 0.15      
14 A' 753 712 60.60      
15 A' 437 414 5.94      
16 A" 3241 3067 16.51      
17 A" 3223 3051 5.30      
18 A" 1359 1287 19.50      
19 A" 1262 1195 0.41      
20 A" 1130 1070 4.58      
21 A" 1099 1040 4.77      
22 A" 1075 1018 2.13      
23 A" 978 926 2.05      
24 A" 898 850 8.64      
25 A" 844 798 4.07      
26 A" 813 769 24.65      
27 A" 466 441 1.94      

Unscaled Zero Point Vibrational Energy (zpe) 20600.3 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 19498.2 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
0.36280 0.21706 0.17408

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 1.057 0.674
C2 -0.268 1.057 -0.674
C3 -0.268 -0.461 0.760
C4 -0.268 -0.461 -0.760
C5 0.923 -1.012 0.000
H6 -0.115 1.827 1.426
H7 -0.115 1.827 -1.426
H8 -0.886 -1.084 1.400
H9 -0.886 -1.084 -1.400
H10 1.862 -0.460 0.000
H11 1.030 -2.098 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.34711.52052.08792.47971.08762.24172.34383.04382.69943.4771
C21.34712.08791.52052.47972.24171.08763.04382.34382.69943.4771
C31.52052.08791.52001.51572.38793.16831.08612.33132.26092.2228
C42.08791.52051.52001.51573.16832.38792.33131.08612.26092.2228
C52.47972.47971.51571.51573.34163.34162.28832.28831.08931.0916
H61.08762.24172.38793.16833.34162.85253.01144.12973.34174.3299
H72.24171.08763.16832.38793.34162.85254.12973.01143.34174.3299
H82.34383.04381.08612.33132.28833.01144.12972.79963.14642.5807
H93.04382.34382.33131.08612.28834.12973.01142.79963.14642.5807
H102.69942.69942.26092.26091.08933.34173.34173.14643.14641.8372
H113.47713.47712.22282.22281.09164.32994.32992.58072.58071.8372

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 93.260 C1 C2 H7 133.796
C1 C3 C4 86.740 C1 C3 C5 109.513
C1 C3 H8 127.300 C2 C1 C3 93.260
C2 C1 H6 133.796 C2 C4 C3 86.740
C2 C4 C5 109.513 C2 C4 H9 127.300
C3 C1 H6 131.870 C3 C4 C5 59.906
C3 C4 H9 126.090 C3 C5 C4 60.188
C3 C5 H10 119.532 C3 C5 H11 116.030
C4 C2 H7 131.870 C4 C3 C5 59.906
C4 C3 H8 126.090 C4 C5 H10 119.532
C4 C5 H11 116.030 C5 C3 H8 122.296
C5 C4 H9 122.296 H10 C5 H11 114.791
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability