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All results from a given calculation for C5H8 (Bicyclo[1.1.1]pentane)

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K0.093981
HF Energy0.093981
Nuclear repulsion energy110.948543
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 PM6
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1' 2784 2958 0.00      
2 A1' 2780 2954 0.00      
3 A1' 1370 1455 0.00      
4 A1' 1306 1388 0.00      
5 A1' 809 860 0.00      
6 A1" 872 927 0.00      
7 A2' 2704 2873 0.00      
8 A2' 945 1004 0.00      
9 A2" 2777 2950 82.10      
10 A2" 1183 1256 83.30      
11 A2" 945 1004 6.97      
12 E' 2778 2952 74.22      
12 E' 2778 2952 74.22      
13 E' 2714 2883 58.89      
13 E' 2714 2883 58.89      
14 E' 1345 1428 30.32      
14 E' 1345 1428 30.32      
15 E' 1179 1252 13.88      
15 E' 1179 1252 13.88      
16 E' 997 1059 3.49      
16 E' 997 1059 3.49      
17 E' 980 1041 9.94      
17 E' 980 1041 9.94      
18 E' 522 555 2.14      
18 E' 522 555 2.14      
19 E" 1177 1251 0.00      
19 E" 1177 1251 0.00      
20 E" 1039 1104 0.00      
20 E" 1039 1104 0.00      
21 E" 963 1024 0.00      
21 E" 963 1024 0.00      
22 E" 748 795 0.00      
22 E" 748 795 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23680.4 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 25158.0 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 PM6
ABC
0.23685 0.23685 0.20189

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.942
C2 0.000 1.260 0.000
C3 1.091 -0.630 0.000
C4 -1.091 -0.630 0.000
C5 0.000 0.000 -0.942
H6 0.000 0.000 2.009
H7 0.000 0.000 -2.009
H8 0.885 1.892 0.000
H9 -0.885 1.892 0.000
H10 1.196 -1.713 0.000
H11 2.081 -0.179 0.000
H12 -2.081 -0.179 0.000
H13 -1.196 -1.713 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.57281.57281.57281.88371.06722.95082.29132.29132.29132.29132.29132.2913
C21.57282.18172.18171.57282.37122.37121.08781.08783.20372.53012.53013.2037
C31.57282.18172.18171.57282.37122.37122.53013.20371.08781.08783.20372.5301
C41.57282.18172.18171.57282.37122.37123.20372.53012.53013.20371.08781.0878
C51.88371.57281.57281.57282.95081.06722.29132.29132.29132.29132.29132.2913
H61.06722.37122.37122.37122.95084.01802.89812.89812.89812.89812.89812.8981
H72.95082.37122.37122.37121.06724.01802.89812.89812.89812.89812.89812.8981
H82.29131.08782.53013.20372.29132.89812.89811.77033.61782.39183.61784.1621
H92.29131.08783.20372.53012.29132.89812.89811.77034.16213.61782.39183.6178
H102.29133.20371.08782.53012.29132.89812.89813.61784.16211.77033.61782.3918
H112.29132.53011.08783.20372.29132.89812.89812.39183.61781.77034.16213.6178
H122.29132.53013.20371.08782.29132.89812.89813.61782.39183.61784.16211.7703
H132.29133.20372.53011.08782.29132.89812.89814.16213.61782.39183.61781.7703

picture of Bicyclo[1.1.1]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 73.574 C1 C2 H8 117.745
C1 C2 H9 117.745 C1 C3 C5 73.574
C1 C3 H10 117.745 C1 C3 H11 117.745
C1 C4 C5 73.574 C1 C4 H12 117.745
C1 C4 H13 117.745 C2 C1 C3 87.827
C2 C1 C4 87.827 C2 C1 H6 126.787
C2 C5 C3 87.827 C2 C5 C4 87.827
C2 C5 H7 126.787 C3 C1 C4 87.827
C3 C1 H6 126.787 C3 C5 C4 87.827
C3 C5 H7 126.787 C4 C1 H6 126.787
C4 C5 H7 126.787 C5 C2 H8 117.745
C5 C2 H9 117.745 C5 C3 H10 117.745
C5 C3 H11 117.745 C5 C4 H12 117.745
C5 C4 H13 117.745 H8 C2 H9 108.916
H10 C3 H11 108.916 H12 C4 H13 108.916
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability