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

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-194.488747
Energy at 298.15K 
HF Energy-193.905541
Nuclear repulsion energy180.375299
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 CID/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 A1' 3238 2991 0.00      
2 A1' 3179 2936 0.00      
3 A1' 1648 1523 0.00      
4 A1' 1192 1101 0.00      
5 A1' 964 890 0.00      
6 A1" 1054 974 0.00      
7 A2' 3232 2986 0.00      
8 A2' 1021 943 0.00      
9 A2" 3231 2985 116.46      
10 A2" 1351 1248 33.58      
11 A2" 909 840 5.82      
12 E' 3239 2992 65.69      
12 E' 3239 2992 65.69      
13 E' 3172 2930 68.61      
13 E' 3172 2930 68.61      
14 E' 1598 1476 0.08      
14 E' 1598 1476 0.08      
15 E' 1348 1246 1.26      
15 E' 1348 1246 1.26      
16 E' 1180 1090 0.41      
16 E' 1180 1090 0.41      
17 E' 964 891 0.67      
17 E' 964 891 0.67      
18 E' 578 534 0.29      
18 E' 578 534 0.29      
19 E" 1290 1192 0.00      
19 E" 1290 1192 0.00      
20 E" 1230 1136 0.00      
20 E" 1230 1136 0.00      
21 E" 1088 1005 0.00      
21 E" 1088 1005 0.00      
22 E" 851 786 0.00      
22 E" 851 786 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 27047.9 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 24984.2 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 CID/6-31G*
ABC
0.24367 0.24367 0.21074

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.934
C2 0.000 1.230 0.000
C3 1.066 -0.615 0.000
C4 -1.066 -0.615 0.000
C5 0.000 0.000 -0.934
H6 0.000 0.000 2.022
H7 0.000 0.000 -2.022
H8 0.899 1.846 0.000
H9 -0.899 1.846 0.000
H10 1.149 -1.701 0.000
H11 2.048 -0.144 0.000
H12 -2.048 -0.144 0.000
H13 -1.149 -1.701 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54491.54491.54491.86851.08742.95592.25572.25572.25572.25572.25572.2557
C21.54492.13112.13111.54492.36662.36661.08951.08953.14902.46682.46683.1490
C31.54492.13112.13111.54492.36662.36662.46683.14901.08951.08953.14902.4668
C41.54492.13112.13111.54492.36662.36663.14902.46682.46683.14901.08951.0895
C51.86851.54491.54491.54492.95591.08742.25572.25572.25572.25572.25572.2557
H61.08742.36662.36662.36662.95594.04332.88142.88142.88142.88142.88142.8814
H72.95592.36662.36662.36661.08744.04332.88142.88142.88142.88142.88142.8814
H82.25571.08952.46683.14902.25572.88142.88141.79783.55622.29843.55624.0962
H92.25571.08953.14902.46682.25572.88142.88141.79784.09623.55622.29843.5562
H102.25573.14901.08952.46682.25572.88142.88143.55624.09621.79783.55622.2984
H112.25572.46681.08953.14902.25572.88142.88142.29843.55621.79784.09623.5562
H122.25572.46683.14901.08952.25572.88142.88143.55622.29843.55624.09621.7978
H132.25573.14902.46681.08952.25572.88142.88144.09623.55622.29843.55621.7978

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 74.420 C1 C2 H8 116.742
C1 C2 H9 116.742 C1 C3 C5 74.420
C1 C3 H10 116.742 C1 C3 H11 116.742
C1 C4 C5 74.420 C1 C4 H12 116.742
C1 C4 H13 116.742 C2 C1 C3 87.217
C2 C1 C4 87.217 C2 C1 H6 127.210
C2 C5 C3 87.217 C2 C5 C4 87.217
C2 C5 H7 127.210 C3 C1 C4 87.217
C3 C1 H6 127.210 C3 C5 C4 87.217
C3 C5 H7 127.210 C4 C1 H6 127.210
C4 C5 H7 127.210 C5 C2 H8 116.742
C5 C2 H9 116.742 C5 C3 H10 116.742
C5 C3 H11 116.742 C5 C4 H12 116.742
C5 C4 H13 116.742 H8 C2 H9 111.196
H10 C3 H11 111.196 H12 C4 H13 111.196
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability