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

using model chemistry: MP2=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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-194.721369
Energy at 298.15K 
HF Energy-193.936915
Nuclear repulsion energy179.625286
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 MP2=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' 3144 2978 0.00      
2 A1' 3087 2924 0.00      
3 A1' 1582 1499 0.00      
4 A1' 1155 1094 0.00      
5 A1' 922 873 0.00      
6 A1" 1011 957 0.00      
7 A2' 3158 2991 0.00      
8 A2' 982 930 0.00      
9 A2" 3140 2974 119.99      
10 A2" 1264 1197 50.29      
11 A2" 871 825 7.45      
12 E' 3162 2995 62.17      
12 E' 3162 2995 62.17      
13 E' 3083 2920 71.29      
13 E' 3083 2920 71.29      
14 E' 1530 1449 0.96      
14 E' 1530 1449 0.96      
15 E' 1268 1201 4.02      
15 E' 1268 1201 4.02      
16 E' 1131 1071 0.06      
16 E' 1131 1071 0.06      
17 E' 927 878 0.70      
17 E' 927 878 0.70      
18 E' 559 529 0.29      
18 E' 559 529 0.29      
19 E" 1223 1158 0.00      
19 E" 1223 1158 0.00      
20 E" 1155 1094 0.00      
20 E" 1155 1094 0.00      
21 E" 1034 979 0.00      
21 E" 1034 979 0.00      
22 E" 820 776 0.00      
22 E" 820 776 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26047.8 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 24669.9 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 MP2=FULL/6-311G*
ABC
0.24160 0.24160 0.20927

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.939
C2 0.000 1.235 0.000
C3 1.070 -0.618 0.000
C4 -1.070 -0.618 0.000
C5 0.000 0.000 -0.939
H6 0.000 0.000 2.032
H7 0.000 0.000 -2.032
H8 0.905 1.850 0.000
H9 -0.905 1.850 0.000
H10 1.149 -1.709 0.000
H11 2.054 -0.141 0.000
H12 -2.054 -0.141 0.000
H13 -1.149 -1.709 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55161.55161.55161.87861.09312.97172.26342.26342.26342.26342.26342.2634
C21.55162.13912.13911.55162.37822.37821.09431.09433.16022.47252.47253.1602
C31.55162.13912.13911.55162.37822.37822.47253.16021.09431.09433.16022.4725
C41.55162.13912.13911.55162.37822.37823.16022.47252.47253.16021.09431.0943
C51.87861.55161.55161.55162.97171.09312.26342.26342.26342.26342.26342.2634
H61.09312.37822.37822.37822.97174.06492.89332.89332.89332.89332.89332.8933
H72.97172.37822.37822.37821.09314.06492.89332.89332.89332.89332.89332.8933
H82.26341.09432.47253.16022.26342.89332.89331.81093.56682.29813.56684.1090
H92.26341.09433.16022.47252.26342.89332.89331.81094.10903.56682.29813.5668
H102.26343.16021.09432.47252.26342.89332.89333.56684.10901.81093.56682.2981
H112.26342.47251.09433.16022.26342.89332.89332.29813.56681.81094.10903.5668
H122.26342.47253.16021.09432.26342.89332.89333.56682.29813.56684.10901.8109
H132.26343.16022.47251.09432.26342.89332.89334.10903.56682.29813.56681.8109

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 116.551
C1 C2 H9 116.551 C1 C3 C5 74.509
C1 C3 H10 116.551 C1 C3 H11 116.551
C1 C4 C5 74.509 C1 C4 H12 116.551
C1 C4 H13 116.551 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 116.551
C5 C2 H9 116.551 C5 C3 H10 116.551
C5 C3 H11 116.551 C5 C4 H12 116.551
C5 C4 H13 116.551 H8 C2 H9 111.669
H10 C3 H11 111.669 H12 C4 H13 111.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability