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All results from a given calculation for C8H8 (cubane)

using model chemistry: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes OH 1A1G
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-309.460386
Energy at 298.15K-309.470392
HF Energy-309.460386
Nuclear repulsion energy366.779593
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 B3LYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1g 3145 3020 0.00 526.44 0.00 0.00
2 A1g 1021 981 0.00 50.04 0.00 0.00
3 A2u 3110 2986 0.00 0.00 0.00 0.00
4 A2u 1047 1005 0.00 0.00 0.00 0.00
5 Eg 1125 1080 0.00 1.69 0.75 0.86
5 Eg 1125 1080 0.00 1.69 0.75 0.86
6 Eg 921 885 0.00 38.77 0.75 0.86
6 Eg 921 885 0.00 38.77 0.75 0.86
7 Eu 1196 1149 0.00 0.00 0.00 0.00
7 Eu 1196 1149 0.00 0.00 0.00 0.00
8 Eu 627 602 0.00 0.00 0.00 0.00
8 Eu 627 602 0.00 0.00 0.00 0.00
9 T1g 1165 1119 0.00 0.00 0.00 0.00
9 T1g 1165 1119 0.00 0.00 0.00 0.00
9 T1g 1165 1119 0.00 0.00 0.00 0.00
10 T1u 3127 3003 140.61 0.00 0.00 0.00
10 T1u 3127 3003 140.61 0.00 0.00 0.00
10 T1u 3127 3003 140.61 0.00 0.00 0.00
11 T1u 1285 1234 1.96 0.00 0.00 0.00
11 T1u 1285 1234 1.96 0.00 0.00 0.00
11 T1u 1285 1234 1.96 0.00 0.00 0.00
12 T1u 870 836 6.06 0.00 0.00 0.00
12 T1u 870 836 6.06 0.00 0.00 0.00
12 T1u 870 836 6.06 0.00 0.00 0.00
13 T2g 3120 2996 0.00 236.44 0.75 0.86
13 T2g 3120 2996 0.00 236.44 0.75 0.86
13 T2g 3120 2996 0.00 236.44 0.75 0.86
14 T2g 1243 1193 0.00 12.48 0.75 0.86
14 T2g 1243 1193 0.00 12.48 0.75 0.86
14 T2g 1243 1193 0.00 12.48 0.75 0.86
15 T2g 847 814 0.00 7.94 0.75 0.86
15 T2g 847 814 0.00 7.94 0.75 0.86
15 T2g 847 814 0.00 7.94 0.75 0.86
16 T2g 686 659 0.00 0.88 0.75 0.86
16 T2g 686 659 0.00 0.88 0.75 0.86
16 T2g 686 659 0.00 0.88 0.75 0.86
17 T2u 1083 1040 0.00 0.00 0.00 0.00
17 T2u 1083 1040 0.00 0.00 0.00 0.00
17 T2u 1083 1040 0.00 0.00 0.00 0.00
18 T2u 849 815 0.00 0.00 0.00 0.00
18 T2u 849 815 0.00 0.00 0.00 0.00
18 T2u 849 815 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 29442.6 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 28273.8 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 B3LYP/6-31G*
ABC
0.11186 0.11186 0.11186

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.785 0.785 0.785
C2 -0.785 0.785 0.785
C3 0.785 0.785 -0.785
C4 -0.785 0.785 -0.785
C5 0.785 -0.785 0.785
C6 -0.785 -0.785 0.785
C7 0.785 -0.785 -0.785
C8 -0.785 -0.785 -0.785
H9 1.416 1.416 1.416
H10 -1.416 1.416 1.416
H11 1.416 1.416 -1.416
H12 -1.416 1.416 -1.416
H13 1.416 -1.416 1.416
H14 -1.416 -1.416 1.416
H15 1.416 -1.416 -1.416
H16 -1.416 -1.416 -1.416

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.57051.57052.22101.57052.22102.22102.72011.09192.37462.37463.17572.37463.17573.17573.8120
C21.57052.22101.57052.22101.57052.72012.22102.37461.09193.17572.37463.17572.37463.81203.1757
C31.57052.22101.57052.22102.72011.57052.22102.37463.17571.09192.37463.17573.81202.37463.1757
C42.22101.57051.57052.72012.22102.22101.57053.17572.37462.37461.09193.81203.17573.17572.3746
C51.57052.22102.22102.72011.57051.57052.22102.37463.17573.17573.81201.09192.37462.37463.1757
C62.22101.57052.72012.22101.57052.22101.57053.17572.37463.81203.17572.37461.09193.17572.3746
C72.22102.72011.57052.22101.57052.22101.57053.17573.81202.37463.17572.37463.17571.09192.3746
C82.72012.22102.22101.57052.22101.57051.57053.81203.17573.17572.37463.17572.37462.37461.0919
H91.09192.37462.37463.17572.37463.17573.17573.81202.83132.83134.00402.83134.00404.00404.9039
H102.37461.09193.17572.37463.17572.37463.81203.17572.83134.00402.83134.00402.83134.90394.0040
H112.37463.17571.09192.37463.17573.81202.37463.17572.83134.00402.83134.00404.90392.83134.0040
H123.17572.37462.37461.09193.81203.17573.17572.37464.00402.83132.83134.90394.00404.00402.8313
H132.37463.17573.17573.81201.09192.37462.37463.17572.83134.00404.00404.90392.83132.83134.0040
H143.17572.37463.81203.17572.37461.09193.17572.37464.00402.83134.90394.00402.83134.00402.8313
H153.17573.81202.37463.17572.37463.17571.09192.37464.00404.90392.83134.00402.83134.00402.8313
H163.81203.17573.17572.37463.17572.37462.37461.09194.90394.00404.00402.83134.00402.83132.8313

picture of cubane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 90.000 C1 C2 C6 90.000
C1 C2 H10 125.264 C1 C3 C4 90.000
C1 C3 C7 90.000 C1 C3 H11 125.264
C1 C5 C6 90.000 C1 C5 C7 90.000
C1 C5 H13 125.264 C2 C1 C3 90.000
C2 C1 C5 90.000 C2 C1 H9 125.264
C2 C4 C3 90.000 C2 C4 C8 90.000
C2 C4 H12 125.264 C2 C6 C5 90.000
C2 C6 C8 90.000 C2 C6 H14 125.264
C3 C1 C5 90.000 C3 C1 H9 125.264
C3 C4 C8 90.000 C3 C4 H12 125.264
C3 C7 C5 90.000 C3 C7 C8 90.000
C3 C7 H15 125.264 C4 C2 C6 90.000
C4 C2 H10 125.264 C4 C3 C7 90.000
C4 C3 H11 125.264 C4 C8 C6 90.000
C4 C8 C7 90.000 C4 C8 H16 125.264
C5 C1 H9 125.264 C5 C6 C8 90.000
C5 C6 H14 125.264 C5 C7 C8 90.000
C5 C7 H15 125.264 C6 C2 H10 125.264
C6 C5 C7 90.000 C6 C5 H13 125.264
C6 C8 C7 90.000 C6 C8 H16 125.264
C7 C3 H11 125.264 C7 C5 H13 125.264
C7 C8 H16 125.264 C8 C4 H12 125.264
C8 C6 H14 125.264 C8 C7 H15 125.264
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.112      
2 C -0.112      
3 C -0.112      
4 C -0.112      
5 C -0.112      
6 C -0.112      
7 C -0.112      
8 C -0.112      
9 H 0.112      
10 H 0.112      
11 H 0.112      
12 H 0.112      
13 H 0.112      
14 H 0.112      
15 H 0.112      
16 H 0.112      


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 -46.219 0.000 0.000
y 0.000 -46.219 0.000
z 0.000 0.000 -46.219
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
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 9.897 0.000 0.000
y 0.000 9.897 0.000
z 0.000 0.000 9.897


<r2> (average value of r2) Å2
<r2> 165.755
(<r2>)1/2 12.875