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

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-193.937600
Energy at 298.15K 
HF Energy-193.937600
Nuclear repulsion energy180.344058
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 HF/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' 3264 2952 0.00 356.42 0.14 0.25
2 A1' 3202 2896 0.00 328.91 0.34 0.50
3 A1' 1694 1532 0.00 6.11 0.66 0.79
4 A1' 1202 1087 0.00 36.91 0.00 0.00
5 A1' 984 890 0.00 9.38 0.01 0.01
6 A1" 1088 984 0.00 0.00 0.00 0.00
7 A2' 3243 2933 0.00 0.00 0.67 0.80
8 A2' 1042 942 0.00 0.00 0.71 0.83
9 A2" 3254 2943 179.16 0.00 0.75 0.86
10 A2" 1394 1261 34.20 0.00 0.00 0.00
11 A2" 916 828 8.00 0.00 0.00 0.00
12 E' 3253 2942 113.08 127.21 0.75 0.86
12 E' 3253 2942 113.08 127.21 0.75 0.86
13 E' 3193 2887 104.80 1.00 0.75 0.86
13 E' 3193 2887 104.80 1.00 0.75 0.86
14 E' 1642 1485 0.00 5.04 0.75 0.86
14 E' 1642 1485 0.00 5.04 0.75 0.86
15 E' 1389 1256 0.70 7.58 0.75 0.86
15 E' 1389 1256 0.70 7.58 0.75 0.86
16 E' 1213 1097 0.44 1.82 0.75 0.86
16 E' 1213 1097 0.44 1.82 0.75 0.86
17 E' 971 878 0.79 5.08 0.75 0.86
17 E' 971 878 0.79 5.08 0.75 0.86
18 E' 588 532 0.34 0.42 0.75 0.86
18 E' 588 532 0.34 0.42 0.75 0.86
19 E" 1329 1202 0.00 0.80 0.75 0.86
19 E" 1329 1202 0.00 0.80 0.75 0.86
20 E" 1274 1152 0.00 2.11 0.75 0.86
20 E" 1274 1152 0.00 2.11 0.75 0.86
21 E" 1123 1016 0.00 21.04 0.75 0.86
21 E" 1123 1016 0.00 21.04 0.75 0.86
22 E" 850 769 0.00 7.93 0.75 0.86
22 E" 850 769 0.00 7.93 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 27464.5 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 24838.9 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 HF/6-311G*
ABC
0.24335 0.24335 0.21047

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.936
C2 0.000 1.232 0.000
C3 1.067 -0.616 0.000
C4 -1.067 -0.616 0.000
C5 0.000 0.000 -0.936
H6 0.000 0.000 2.018
H7 0.000 0.000 -2.018
H8 0.893 1.847 0.000
H9 -0.893 1.847 0.000
H10 1.153 -1.697 0.000
H11 2.046 -0.150 0.000
H12 -2.046 -0.150 0.000
H13 -1.153 -1.697 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54711.54711.54711.87151.08232.95392.25512.25512.25512.25512.25512.2551
C21.54712.13382.13381.54712.36442.36441.08451.08453.14792.46942.46943.1479
C31.54712.13382.13381.54712.36442.36442.46943.14791.08451.08453.14792.4694
C41.54712.13382.13381.54712.36442.36443.14792.46942.46943.14791.08451.0845
C51.87151.54711.54711.54712.95391.08232.25512.25512.25512.25512.25512.2551
H61.08232.36442.36442.36442.95394.03622.87802.87802.87802.87802.87802.8780
H72.95392.36442.36442.36441.08234.03622.87802.87802.87802.87802.87802.8780
H82.25511.08452.46943.14792.25512.87802.87801.78603.55392.30663.55394.0926
H92.25511.08453.14792.46942.25512.87802.87801.78604.09263.55392.30663.5539
H102.25513.14791.08452.46942.25512.87802.87803.55394.09261.78603.55392.3066
H112.25512.46941.08453.14792.25512.87802.87802.30663.55391.78604.09263.5539
H122.25512.46943.14791.08452.25512.87802.87803.55392.30663.55394.09261.7860
H132.25513.14792.46941.08452.25512.87802.87804.09263.55392.30663.55391.7860

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 74.439 C1 C2 H8 116.861
C1 C2 H9 116.861 C1 C3 C5 74.439
C1 C3 H10 116.861 C1 C3 H11 116.861
C1 C4 C5 74.439 C1 C4 H12 116.861
C1 C4 H13 116.861 C2 C1 C3 87.203
C2 C1 C4 87.203 C2 C1 H6 127.220
C2 C5 C3 87.203 C2 C5 C4 87.203
C2 C5 H7 127.220 C3 C1 C4 87.203
C3 C1 H6 127.220 C3 C5 C4 87.203
C3 C5 H7 127.220 C4 C1 H6 127.220
C4 C5 H7 127.220 C5 C2 H8 116.861
C5 C2 H9 116.861 C5 C3 H10 116.861
C5 C3 H11 116.861 C5 C4 H12 116.861
C5 C4 H13 116.861 H8 C2 H9 110.862
H10 C3 H11 110.862 H12 C4 H13 110.862
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.273      
2 C -0.339      
3 C -0.339      
4 C -0.339      
5 C -0.273      
6 H 0.177      
7 H 0.177      
8 H 0.202      
9 H 0.202      
10 H 0.202      
11 H 0.202      
12 H 0.202      
13 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.124 0.000 0.000
y 0.000 -32.124 0.000
z 0.000 0.000 -32.369
Traceless
 xyz
x 0.123 0.000 0.000
y 0.000 0.123 0.000
z 0.000 0.000 -0.245
Polar
3z2-r2-0.491
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.579 0.000 0.000
y 0.000 7.579 0.000
z 0.000 0.000 6.689


<r2> (average value of r2) Å2
<r2> 91.347
(<r2>)1/2 9.558