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All results from a given calculation for C8H8 (cubane)

using model chemistry: B3LYP/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-309.557771
Energy at 298.15K-309.567798
HF Energy-309.557771
Nuclear repulsion energy367.589953
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/cc-pVTZ
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 3125 3021 0.00 686.70 0.00 0.00
2 A1g 1017 983 0.00 63.67 0.00 0.00
3 A2u 3090 2987 0.00 0.00 0.00 0.00
4 A2u 1052 1017 0.00 0.00 0.00 0.00
5 Eg 1112 1075 0.00 0.03 0.75 0.86
5 Eg 1112 1075 0.00 0.03 0.75 0.86
6 Eg 912 881 0.00 27.17 0.75 0.86
6 Eg 912 881 0.00 27.17 0.75 0.86
7 Eu 1185 1145 0.00 0.00 0.00 0.00
7 Eu 1185 1145 0.00 0.00 0.00 0.00
8 Eu 623 602 0.00 0.00 0.00 0.00
8 Eu 623 602 0.00 0.00 0.00 0.00
9 T1g 1167 1128 0.00 0.00 0.00 0.00
9 T1g 1167 1128 0.00 0.00 0.00 0.00
9 T1g 1167 1128 0.00 0.00 0.00 0.00
10 T1u 3107 3003 134.06 0.00 0.00 0.00
10 T1u 3107 3003 134.06 0.00 0.00 0.00
10 T1u 3107 3003 134.06 0.00 0.00 0.00
11 T1u 1267 1225 4.19 0.00 0.00 0.00
11 T1u 1267 1225 4.19 0.00 0.00 0.00
11 T1u 1267 1225 4.19 0.00 0.00 0.00
12 T1u 864 835 9.48 0.00 0.00 0.00
12 T1u 864 835 9.48 0.00 0.00 0.00
12 T1u 864 835 9.48 0.00 0.00 0.00
13 T2g 3100 2996 0.00 265.66 0.75 0.86
13 T2g 3100 2996 0.00 265.66 0.75 0.86
13 T2g 3100 2996 0.00 265.66 0.75 0.86
14 T2g 1220 1180 0.00 7.66 0.75 0.86
14 T2g 1220 1180 0.00 7.66 0.75 0.86
14 T2g 1220 1180 0.00 7.66 0.75 0.86
15 T2g 838 810 0.00 3.71 0.75 0.86
15 T2g 838 810 0.00 3.71 0.75 0.86
15 T2g 838 810 0.00 3.71 0.75 0.86
16 T2g 681 658 0.00 0.63 0.75 0.86
16 T2g 681 658 0.00 0.63 0.75 0.86
16 T2g 681 658 0.00 0.63 0.75 0.86
17 T2u 1066 1031 0.00 0.00 0.00 0.00
17 T2u 1066 1031 0.00 0.00 0.00 0.00
17 T2u 1066 1031 0.00 0.00 0.00 0.00
18 T2u 835 807 0.00 0.00 0.00 0.00
18 T2u 835 807 0.00 0.00 0.00 0.00
18 T2u 835 807 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 29191.0 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 28216.0 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 B3LYP/cc-pVTZ
ABC
0.11233 0.11233 0.11233

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.784 0.784 0.784
C2 -0.784 0.784 0.784
C3 0.784 0.784 -0.784
C4 -0.784 0.784 -0.784
C5 0.784 -0.784 0.784
C6 -0.784 -0.784 0.784
C7 0.784 -0.784 -0.784
C8 -0.784 -0.784 -0.784
H9 1.411 1.411 1.411
H10 -1.411 1.411 1.411
H11 1.411 1.411 -1.411
H12 -1.411 1.411 -1.411
H13 1.411 -1.411 1.411
H14 -1.411 -1.411 1.411
H15 1.411 -1.411 -1.411
H16 -1.411 -1.411 -1.411

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.56771.56772.21701.56772.21702.21702.71531.08642.36742.36743.16682.36743.16683.16683.8017
C21.56772.21701.56772.21701.56772.71532.21702.36741.08643.16682.36743.16682.36743.80173.1668
C31.56772.21701.56772.21702.71531.56772.21702.36743.16681.08642.36743.16683.80172.36743.1668
C42.21701.56771.56772.71532.21702.21701.56773.16682.36742.36741.08643.80173.16683.16682.3674
C51.56772.21702.21702.71531.56771.56772.21702.36743.16683.16683.80171.08642.36742.36743.1668
C62.21701.56772.71532.21701.56772.21701.56773.16682.36743.80173.16682.36741.08643.16682.3674
C72.21702.71531.56772.21701.56772.21701.56773.16683.80172.36743.16682.36743.16681.08642.3674
C82.71532.21702.21701.56772.21701.56771.56773.80173.16683.16682.36743.16682.36742.36741.0864
H91.08642.36742.36743.16682.36743.16683.16683.80172.82212.82213.99112.82213.99113.99114.8881
H102.36741.08643.16682.36743.16682.36743.80173.16682.82213.99112.82213.99112.82214.88813.9911
H112.36743.16681.08642.36743.16683.80172.36743.16682.82213.99112.82213.99114.88812.82213.9911
H123.16682.36742.36741.08643.80173.16683.16682.36743.99112.82212.82214.88813.99113.99112.8221
H132.36743.16683.16683.80171.08642.36742.36743.16682.82213.99113.99114.88812.82212.82213.9911
H143.16682.36743.80173.16682.36741.08643.16682.36743.99112.82214.88813.99112.82213.99112.8221
H153.16683.80172.36743.16682.36743.16681.08642.36743.99114.88812.82213.99112.82213.99112.8221
H163.80173.16683.16682.36743.16682.36742.36741.08644.88813.99113.99112.82213.99112.82212.8221

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/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.091      
2 C -0.091      
3 C -0.091      
4 C -0.091      
5 C -0.091      
6 C -0.091      
7 C -0.091      
8 C -0.091      
9 H 0.091      
10 H 0.091      
11 H 0.091      
12 H 0.091      
13 H 0.091      
14 H 0.091      
15 H 0.091      
16 H 0.091      


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 -47.022 0.000 0.000
y 0.000 -47.022 0.000
z 0.000 0.000 -47.022
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 11.040 0.000 0.000
y 0.000 11.040 0.000
z 0.000 0.000 11.040


<r2> (average value of r2) Å2
<r2> 165.628
(<r2>)1/2 12.870