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

using model chemistry: HF/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 HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-193.966218
Energy at 298.15K 
HF Energy-193.966218
Nuclear repulsion energy180.643659
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/6-311+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' 3242 2946 0.00 392.26 0.12 0.22
2 A1' 3181 2890 0.00 335.58 0.27 0.42
3 A1' 1680 1526 0.00 4.63 0.58 0.74
4 A1' 1196 1086 0.00 44.96 0.00 0.00
5 A1' 978 889 0.00 11.53 0.00 0.00
6 A1" 1082 983 0.00 0.00 0.03 0.07
7 A2' 3223 2928 0.00 0.00 0.45 0.62
8 A2' 1035 940 0.00 0.00 0.00 0.00
9 A2" 3233 2937 152.48 0.00 0.75 0.86
10 A2" 1388 1261 33.47 0.00 0.75 0.86
11 A2" 913 830 5.23 0.00 0.00 0.00
12 E' 3232 2937 92.73 121.73 0.75 0.86
12 E' 3232 2937 92.73 121.73 0.75 0.86
13 E' 3173 2883 95.92 1.62 0.75 0.86
13 E' 3173 2883 95.92 1.62 0.75 0.86
14 E' 1628 1479 0.16 2.94 0.75 0.86
14 E' 1628 1479 0.16 2.94 0.75 0.86
15 E' 1386 1260 0.75 8.36 0.75 0.86
15 E' 1386 1260 0.75 8.36 0.75 0.86
16 E' 1207 1097 0.59 0.84 0.75 0.86
16 E' 1207 1097 0.59 0.84 0.75 0.86
17 E' 970 882 0.65 5.47 0.75 0.86
17 E' 970 882 0.65 5.47 0.75 0.86
18 E' 583 529 0.30 0.25 0.75 0.86
18 E' 583 529 0.30 0.25 0.75 0.86
19 E" 1330 1208 0.00 0.00 0.75 0.86
19 E" 1330 1208 0.00 0.00 0.75 0.86
20 E" 1265 1150 0.00 2.36 0.75 0.86
20 E" 1265 1150 0.00 2.36 0.75 0.86
21 E" 1120 1018 0.00 8.97 0.75 0.86
21 E" 1120 1018 0.00 8.97 0.75 0.86
22 E" 848 770 0.00 7.56 0.75 0.86
22 E" 848 770 0.00 7.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 27316.5 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 24819.8 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/6-311+G(3df,2p)
ABC
0.24425 0.24425 0.21097

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.933
C2 0.000 1.231 0.000
C3 1.066 -0.615 0.000
C4 -1.066 -0.615 0.000
C5 0.000 0.000 -0.933
H6 0.000 0.000 2.014
H7 0.000 0.000 -2.014
H8 0.893 1.843 0.000
H9 -0.893 1.843 0.000
H10 1.150 -1.695 0.000
H11 2.043 -0.148 0.000
H12 -2.043 -0.148 0.000
H13 -1.150 -1.695 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54451.54451.54451.86601.08052.94662.25072.25072.25072.25072.25072.2507
C21.54452.13182.13181.54452.35992.35991.08291.08293.14372.46482.46483.1437
C31.54452.13182.13181.54452.35992.35992.46483.14361.08291.08293.14362.4648
C41.54452.13182.13181.54452.35992.35993.14362.46482.46483.14361.08291.0829
C51.86601.54451.54451.54452.94661.08052.25072.25072.25072.25072.25072.2507
H61.08052.35992.35992.35992.94664.02712.87222.87222.87222.87222.87222.8722
H72.94662.35992.35992.35991.08054.02712.87222.87222.87222.87222.87222.8722
H82.25071.08292.46483.14362.25072.87222.87221.78603.54762.29973.54764.0857
H92.25071.08293.14362.46482.25072.87222.87221.78604.08573.54762.29973.5476
H102.25073.14371.08292.46482.25072.87222.87223.54764.08571.78603.54762.2997
H112.25072.46481.08293.14362.25072.87222.87222.29973.54761.78604.08573.5476
H122.25072.46483.14361.08292.25072.87222.87223.54762.29973.54764.08571.7860
H132.25073.14372.46481.08292.25072.87222.87224.08573.54762.29973.54761.7860

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 74.328 C1 C2 H8 116.792
C1 C2 H9 116.792 C1 C3 C5 74.328
C1 C3 H10 116.792 C1 C3 H11 116.792
C1 C4 C5 74.328 C1 C4 H12 116.792
C1 C4 H13 116.792 C2 C1 C3 87.283
C2 C1 C4 87.283 C2 C1 H6 127.164
C2 C5 C3 87.283 C2 C5 C4 87.283
C2 C5 H7 127.164 C3 C1 C4 87.283
C3 C1 H6 127.164 C3 C5 C4 87.283
C3 C5 H7 127.164 C4 C1 H6 127.164
C4 C5 H7 127.164 C5 C2 H8 116.792
C5 C2 H9 116.792 C5 C3 H10 116.792
C5 C3 H11 116.792 C5 C4 H12 116.792
C5 C4 H13 116.792 H8 C2 H9 111.109
H10 C3 H11 111.109 H12 C4 H13 111.109
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.149      
2 C -0.420      
3 C -0.420      
4 C -0.420      
5 C 0.149      
6 H 0.120      
7 H 0.120      
8 H 0.121      
9 H 0.121      
10 H 0.121      
11 H 0.121      
12 H 0.121      
13 H 0.121      


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 -32.063 0.000 0.000
y 0.000 -32.063 0.000
z 0.000 0.000 -32.216
Traceless
 xyz
x 0.077 0.000 0.000
y 0.000 0.077 0.000
z 0.000 0.000 -0.153
Polar
3z2-r2-0.307
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 8.007 0.000 0.000
y 0.000 8.007 0.000
z 0.000 0.000 7.410


<r2> (average value of r2) Å2
<r2> 91.052
(<r2>)1/2 9.542