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

using model chemistry: MP3=FULL/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-194.959133
Energy at 298.15K 
HF Energy-193.965986
Nuclear repulsion energy180.162672
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/6-311+G(3df,2p)
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' 3174 3174 0.00      
2 A1' 3106 3106 0.00      
3 A1' 1579 1579 0.00      
4 A1' 1151 1151 0.00      
5 A1' 932 932 0.00      
6 A1" 1023 1023 0.00      
7 A2' 3168 3168 0.00      
8 A2' 974 974 0.00      
9 A2" 3168 3168 108.06      
10 A2" 1284 1284 36.96      
11 A2" 876 876 4.71      
12 E' 3173 3173 58.74      
12 E' 3173 3173 58.74      
13 E' 3101 3101 71.60      
13 E' 3101 3101 71.60      
14 E' 1526 1526 0.68      
14 E' 1526 1526 0.68      
15 E' 1295 1295 1.95      
15 E' 1295 1295 1.95      
16 E' 1136 1136 0.44      
16 E' 1136 1136 0.44      
17 E' 933 933 0.51      
17 E' 933 933 0.51      
18 E' 551 551 0.19      
18 E' 551 551 0.19      
19 E" 1241 1241 0.00      
19 E" 1241 1241 0.00      
20 E" 1176 1176 0.00      
20 E" 1176 1176 0.00      
21 E" 1051 1051 0.00      
21 E" 1051 1051 0.00      
22 E" 820 820 0.00      
22 E" 820 820 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26218.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26218.1 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/6-311+G(3df,2p)
ABC
0.24298 0.24298 0.21019

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311+G(3df,2p)

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.936
C2 0.000 1.233 0.000
C3 1.068 -0.617 0.000
C4 -1.068 -0.617 0.000
C5 0.000 0.000 -0.936
H6 0.000 0.000 2.021
H7 0.000 0.000 -2.021
H8 0.901 1.843 0.000
H9 -0.901 1.843 0.000
H10 1.145 -1.702 0.000
H11 2.046 -0.141 0.000
H12 -2.046 -0.141 0.000
H13 -1.145 -1.702 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54851.54851.54851.87271.08512.95772.25492.25492.25492.25492.25492.2549
C21.54852.13622.13621.54852.36792.36791.08781.08783.15062.46522.46523.1506
C31.54852.13622.13621.54852.36792.36792.46523.15061.08781.08783.15062.4652
C41.54852.13622.13621.54852.36792.36793.15062.46522.46523.15061.08781.0878
C51.87271.54851.54851.54852.95771.08512.25492.25492.25492.25492.25492.2549
H61.08512.36792.36792.36792.95774.04282.87992.87992.87992.87992.87992.8799
H72.95772.36792.36792.36791.08514.04282.87992.87992.87992.87992.87992.8799
H82.25491.08782.46523.15062.25492.87992.87991.80193.55302.29103.55304.0929
H92.25491.08783.15062.46522.25492.87992.87991.80194.09293.55302.29103.5530
H102.25493.15061.08782.46522.25492.87992.87993.55304.09291.80193.55302.2910
H112.25492.46521.08783.15062.25492.87992.87992.29103.55301.80194.09293.5530
H122.25492.46523.15061.08782.25492.87992.87993.55302.29103.55304.09291.8019
H132.25493.15062.46521.08782.25492.87992.87994.09293.55302.29103.55301.8019

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 74.412 C1 C2 H8 116.507
C1 C2 H9 116.507 C1 C3 C5 74.412
C1 C3 H10 116.507 C1 C3 H11 116.507
C1 C4 C5 74.412 C1 C4 H12 116.507
C1 C4 H13 116.507 C2 C1 C3 87.222
C2 C1 C4 87.222 C2 C1 H6 127.206
C2 C5 C3 87.222 C2 C5 C4 87.222
C2 C5 H7 127.206 C3 C1 C4 87.222
C3 C1 H6 127.206 C3 C5 C4 87.222
C3 C5 H7 127.206 C4 C1 H6 127.206
C4 C5 H7 127.206 C5 C2 H8 116.507
C5 C2 H9 116.507 C5 C3 H10 116.507
C5 C3 H11 116.507 C5 C4 H12 116.507
C5 C4 H13 116.507 H8 C2 H9 111.838
H10 C3 H11 111.838 H12 C4 H13 111.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability