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All results from a given calculation for C8H8 (cubane)

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-309.214080
Energy at 298.15K-309.223820
HF Energy-309.214080
Nuclear repulsion energy360.708164
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 BLYP/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 3093 3069 0.00 533.89 0.00 0.00
2 A1g 969 962 0.00 62.18 0.00 0.00
3 A2u 3049 3026 0.00 0.00 0.00 0.00
4 A2u 1002 995 0.00 0.00 0.00 0.00
5 Eg 1065 1057 0.00 5.12 0.75 0.86
5 Eg 1065 1057 0.00 5.12 0.75 0.86
6 Eg 890 883 0.00 38.89 0.75 0.86
6 Eg 890 883 0.00 38.89 0.75 0.86
7 Eu 1173 1164 0.00 0.00 0.00 0.00
7 Eu 1173 1164 0.00 0.00 0.00 0.00
8 Eu 606 601 0.00 0.00 0.00 0.00
8 Eu 606 601 0.00 0.00 0.00 0.00
9 T1g 1135 1126 0.00 0.00 0.00 0.00
9 T1g 1135 1126 0.00 0.00 0.00 0.00
9 T1g 1135 1126 0.00 0.00 0.00 0.00
10 T1u 3068 3044 150.86 0.00 0.00 0.00
10 T1u 3068 3044 150.86 0.00 0.00 0.00
10 T1u 3068 3044 150.86 0.00 0.00 0.00
11 T1u 1223 1214 3.40 0.00 0.00 0.00
11 T1u 1223 1214 3.40 0.00 0.00 0.00
11 T1u 1223 1214 3.40 0.00 0.00 0.00
12 T1u 826 820 8.15 0.00 0.00 0.00
12 T1u 826 820 8.15 0.00 0.00 0.00
12 T1u 826 820 8.15 0.00 0.00 0.00
13 T2g 3059 3035 0.00 246.78 0.75 0.86
13 T2g 3059 3035 0.00 246.78 0.75 0.86
13 T2g 3059 3035 0.00 246.78 0.75 0.86
14 T2g 1176 1168 0.00 15.44 0.75 0.86
14 T2g 1176 1168 0.00 15.44 0.75 0.86
14 T2g 1176 1168 0.00 15.44 0.75 0.86
15 T2g 798 792 0.00 8.31 0.75 0.86
15 T2g 798 792 0.00 8.31 0.75 0.86
15 T2g 798 792 0.00 8.31 0.75 0.86
16 T2g 668 663 0.00 1.01 0.75 0.86
16 T2g 668 663 0.00 1.01 0.75 0.86
16 T2g 668 663 0.00 1.01 0.75 0.86
17 T2u 1023 1015 0.00 0.00 0.00 0.00
17 T2u 1023 1015 0.00 0.00 0.00 0.00
17 T2u 1023 1015 0.00 0.00 0.00 0.00
18 T2u 808 802 0.00 0.00 0.00 0.00
18 T2u 808 802 0.00 0.00 0.00 0.00
18 T2u 808 802 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 28463.8 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 28247.4 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 BLYP/6-31G
ABC
0.10809 0.10809 0.10809

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

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.800 0.800 0.800
C2 -0.800 0.800 0.800
C3 0.800 0.800 -0.800
C4 -0.800 0.800 -0.800
C5 0.800 -0.800 0.800
C6 -0.800 -0.800 0.800
C7 0.800 -0.800 -0.800
C8 -0.800 -0.800 -0.800
H9 1.433 1.433 1.433
H10 -1.433 1.433 1.433
H11 1.433 1.433 -1.433
H12 -1.433 1.433 -1.433
H13 1.433 -1.433 1.433
H14 -1.433 -1.433 1.433
H15 1.433 -1.433 -1.433
H16 -1.433 -1.433 -1.433

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.59981.59982.26241.59982.26242.26242.77091.09672.40592.40593.22082.40593.22083.22083.8677
C21.59982.26241.59982.26241.59982.77092.26242.40591.09673.22082.40593.22082.40593.86773.2208
C31.59982.26241.59982.26242.77091.59982.26242.40593.22081.09672.40593.22083.86772.40593.2208
C42.26241.59981.59982.77092.26242.26241.59983.22082.40592.40591.09673.86773.22083.22082.4059
C51.59982.26242.26242.77091.59981.59982.26242.40593.22083.22083.86771.09672.40592.40593.2208
C62.26241.59982.77092.26241.59982.26241.59983.22082.40593.86773.22082.40591.09673.22082.4059
C72.26242.77091.59982.26241.59982.26241.59983.22083.86772.40593.22082.40593.22081.09672.4059
C82.77092.26242.26241.59982.26241.59981.59983.86773.22083.22082.40593.22082.40592.40591.0967
H91.09672.40592.40593.22082.40593.22083.22083.86772.86622.86624.05342.86624.05344.05344.9644
H102.40591.09673.22082.40593.22082.40593.86773.22082.86624.05342.86624.05342.86624.96444.0534
H112.40593.22081.09672.40593.22083.86772.40593.22082.86624.05342.86624.05344.96442.86624.0534
H123.22082.40592.40591.09673.86773.22083.22082.40594.05342.86622.86624.96444.05344.05342.8662
H132.40593.22083.22083.86771.09672.40592.40593.22082.86624.05344.05344.96442.86622.86624.0534
H143.22082.40593.86773.22082.40591.09673.22082.40594.05342.86624.96444.05342.86624.05342.8662
H153.22083.86772.40593.22082.40593.22081.09672.40594.05344.96442.86624.05342.86624.05342.8662
H163.86773.22083.22082.40593.22082.40592.40591.09674.96444.05344.05342.86624.05342.86622.8662

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 BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.086      
2 C -0.086      
3 C -0.086      
4 C -0.086      
5 C -0.086      
6 C -0.086      
7 C -0.086      
8 C -0.086      
9 H 0.086      
10 H 0.086      
11 H 0.086      
12 H 0.086      
13 H 0.086      
14 H 0.086      
15 H 0.086      
16 H 0.086      


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 -46.639 0.000 0.000
y 0.000 -46.639 0.000
z 0.000 0.000 -46.639
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 10.106 0.000 0.000
y 0.000 10.106 0.000
z 0.000 0.000 10.106


<r2> (average value of r2) Å2
<r2> 170.557
(<r2>)1/2 13.060