return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP3=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at MP3=FULL/6-311G*
 hartrees
Energy at 0K-194.759419
Energy at 298.15K 
HF Energy-193.936856
Nuclear repulsion energy179.276258
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=FULL/6-311G*
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' 3159 3159 0.00      
2 A1' 3097 3097 0.00      
3 A1' 1590 1590 0.00      
4 A1' 1156 1156 0.00      
5 A1' 938 938 0.00      
6 A1" 1017 1017 0.00      
7 A2' 3156 3156 0.00      
8 A2' 982 982 0.00      
9 A2" 3152 3152 119.59      
10 A2" 1285 1285 46.46      
11 A2" 873 873 8.03      
12 E' 3161 3161 66.41      
12 E' 3161 3161 66.41      
13 E' 3091 3091 72.02      
13 E' 3091 3091 72.02      
14 E' 1539 1539 0.89      
14 E' 1539 1539 0.89      
15 E' 1284 1284 2.90      
15 E' 1284 1284 2.90      
16 E' 1138 1138 0.08      
16 E' 1138 1138 0.08      
17 E' 927 927 0.94      
17 E' 927 927 0.94      
18 E' 562 562 0.33      
18 E' 562 562 0.33      
19 E" 1235 1235 0.00      
19 E" 1235 1235 0.00      
20 E" 1173 1173 0.00      
20 E" 1173 1173 0.00      
21 E" 1045 1045 0.00      
21 E" 1045 1045 0.00      
22 E" 819 819 0.00      
22 E" 819 819 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26177.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26177.0 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 MP3=FULL/6-311G*
ABC
0.24054 0.24054 0.20832

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.942
C2 0.000 1.238 0.000
C3 1.072 -0.619 0.000
C4 -1.072 -0.619 0.000
C5 0.000 0.000 -0.942
H6 0.000 0.000 2.033
H7 0.000 0.000 -2.033
H8 0.904 1.854 0.000
H9 -0.904 1.854 0.000
H10 1.153 -1.710 0.000
H11 2.057 -0.144 0.000
H12 -2.057 -0.144 0.000
H13 -1.153 -1.710 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55581.55581.55581.88361.09162.97512.26722.26722.26722.26722.26722.2672
C21.55582.14482.14481.55582.38082.38081.09361.09363.16562.47842.47843.1656
C31.55582.14482.14481.55582.38082.38082.47843.16561.09361.09363.16562.4784
C41.55582.14482.14481.55582.38082.38083.16562.47842.47843.16561.09361.0936
C51.88361.55581.55581.55582.97511.09162.26722.26722.26722.26722.26722.2672
H61.09162.38082.38082.38082.97514.06672.89622.89622.89622.89622.89622.8962
H72.97512.38082.38082.38081.09164.06672.89622.89622.89622.89622.89622.8962
H82.26721.09362.47843.16562.26722.89622.89621.80833.57202.30633.57204.1146
H92.26721.09363.16562.47842.26722.89622.89621.80834.11463.57202.30633.5720
H102.26723.16561.09362.47842.26722.89622.89623.57204.11461.80833.57202.3063
H112.26722.47841.09363.16562.26722.89622.89622.30633.57201.80834.11463.5720
H122.26722.47843.16561.09362.26722.89622.89623.57202.30633.57204.11461.8083
H132.26723.16562.47841.09362.26722.89622.89624.11463.57202.30633.57201.8083

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 74.509 C1 C2 H8 116.601
C1 C2 H9 116.601 C1 C3 C5 74.509
C1 C3 H10 116.601 C1 C3 H11 116.601
C1 C4 C5 74.509 C1 C4 H12 116.601
C1 C4 H13 116.601 C2 C1 C3 87.152
C2 C1 C4 87.152 C2 C1 H6 127.254
C2 C5 C3 87.152 C2 C5 C4 87.152
C2 C5 H7 127.254 C3 C1 C4 87.152
C3 C1 H6 127.254 C3 C5 C4 87.152
C3 C5 H7 127.254 C4 C1 H6 127.254
C4 C5 H7 127.254 C5 C2 H8 116.601
C5 C2 H9 116.601 C5 C3 H10 116.601
C5 C3 H11 116.601 C5 C4 H12 116.601
C5 C4 H13 116.601 H8 C2 H9 111.534
H10 C3 H11 111.534 H12 C4 H13 111.534
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability