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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-194.784061
Energy at 298.15K 
HF Energy-193.949443
Nuclear repulsion energy179.652907
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' 3153 2991 0.00      
2 A1' 3091 2932 0.00      
3 A1' 1570 1489 0.00      
4 A1' 1152 1093 0.00      
5 A1' 918 871 0.00      
6 A1" 1011 959 0.00      
7 A2' 3163 3000 0.00      
8 A2' 980 929 0.00      
9 A2" 3149 2987 112.84      
10 A2" 1266 1201 41.40      
11 A2" 868 824 5.50      
12 E' 3167 3005 59.75      
12 E' 3167 3005 59.75      
13 E' 3087 2929 69.70      
13 E' 3087 2929 69.70      
14 E' 1519 1441 0.37      
14 E' 1519 1441 0.37      
15 E' 1273 1207 3.02      
15 E' 1273 1207 3.02      
16 E' 1128 1070 0.35      
16 E' 1128 1070 0.35      
17 E' 927 879 0.32      
17 E' 927 879 0.32      
18 E' 552 523 0.18      
18 E' 552 523 0.18      
19 E" 1224 1161 0.00      
19 E" 1224 1161 0.00      
20 E" 1154 1095 0.00      
20 E" 1154 1095 0.00      
21 E" 1033 980 0.00      
21 E" 1033 980 0.00      
22 E" 819 777 0.00      
22 E" 819 777 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26041.5 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 24703.0 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 MP2=FULL/6-311G**
ABC
0.24169 0.24169 0.20936

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 2.031
H7 0.000 0.000 -2.031
H8 0.908 1.847 0.000
H9 -0.908 1.847 0.000
H10 1.145 -1.709 0.000
H11 2.053 -0.137 0.000
H12 -2.053 -0.137 0.000
H13 -1.145 -1.709 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55171.55171.55171.87851.09222.97072.26192.26192.26192.26192.26192.2619
C21.55172.13922.13921.55172.37752.37751.09451.09453.15942.46952.46953.1594
C31.55172.13922.13921.55172.37752.37752.46953.15941.09451.09443.15942.4695
C41.55172.13922.13921.55172.37752.37753.15942.46952.46953.15941.09441.0945
C51.87851.55171.55171.55172.97071.09222.26192.26192.26192.26192.26192.2619
H61.09222.37752.37752.37752.97074.06302.89152.89152.89152.89152.89152.8915
H72.97072.37752.37752.37751.09224.06302.89152.89152.89152.89152.89152.8915
H82.26191.09452.46953.15942.26192.89152.89151.81533.56392.29083.56394.1061
H92.26191.09453.15942.46952.26192.89152.89151.81534.10613.56392.29083.5639
H102.26193.15941.09452.46952.26192.89152.89153.56394.10611.81533.56392.2908
H112.26192.46951.09443.15942.26192.89152.89152.29083.56391.81534.10613.5639
H122.26192.46953.15941.09442.26192.89152.89153.56392.29083.56394.10611.8153
H132.26193.15942.46951.09452.26192.89152.89154.10613.56392.29083.56391.8153

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 74.503 C1 C2 H8 116.408
C1 C2 H9 116.408 C1 C3 C5 74.503
C1 C3 H10 116.408 C1 C3 H11 116.408
C1 C4 C5 74.503 C1 C4 H12 116.408
C1 C4 H13 116.408 C2 C1 C3 87.156
C2 C1 C4 87.156 C2 C1 H6 127.252
C2 C5 C3 87.156 C2 C5 C4 87.156
C2 C5 H7 127.252 C3 C1 C4 87.156
C3 C1 H6 127.252 C3 C5 C4 87.156
C3 C5 H7 127.252 C4 C1 H6 127.252
C4 C5 H7 127.252 C5 C2 H8 116.408
C5 C2 H9 116.408 C5 C3 H10 116.408
C5 C3 H11 116.408 C5 C4 H12 116.408
C5 C4 H13 116.408 H8 C2 H9 112.060
H10 C3 H11 112.060 H12 C4 H13 112.060
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability