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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-309.309918
Energy at 298.15K-309.319679
HF Energy-309.309918
Nuclear repulsion energy363.759534
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 3055 3031 0.00 581.68 0.00 0.00
2 A1g 979 971 0.00 49.43 0.00 0.00
3 A2u 3020 2997 0.00 0.00 0.00 0.00
4 A2u 1009 1001 0.00 0.00 0.00 0.00
5 Eg 1071 1063 0.00 4.56 0.75 0.86
5 Eg 1071 1063 0.00 4.56 0.75 0.86
6 Eg 888 881 0.00 41.23 0.75 0.86
6 Eg 888 881 0.00 41.23 0.75 0.86
7 Eu 1155 1146 0.00 0.00 0.00 0.00
7 Eu 1155 1146 0.00 0.00 0.00 0.00
8 Eu 604 600 0.00 0.00 0.00 0.00
8 Eu 604 600 0.00 0.00 0.00 0.00
9 T1g 1123 1114 0.00 0.00 0.00 0.00
9 T1g 1123 1114 0.00 0.00 0.00 0.00
9 T1g 1123 1114 0.00 0.00 0.00 0.00
10 T1u 3036 3013 157.15 0.00 0.00 0.00
10 T1u 3036 3013 157.15 0.00 0.00 0.00
10 T1u 3036 3013 157.15 0.00 0.00 0.00
11 T1u 1234 1224 1.04 0.00 0.00 0.00
11 T1u 1234 1224 1.04 0.00 0.00 0.00
11 T1u 1234 1224 1.04 0.00 0.00 0.00
12 T1u 835 829 4.45 0.00 0.00 0.00
12 T1u 835 829 4.45 0.00 0.00 0.00
12 T1u 835 829 4.45 0.00 0.00 0.00
13 T2g 3030 3007 0.00 258.58 0.75 0.86
13 T2g 3030 3007 0.00 258.58 0.75 0.86
13 T2g 3030 3007 0.00 258.58 0.75 0.86
14 T2g 1188 1179 0.00 14.79 0.75 0.86
14 T2g 1188 1179 0.00 14.79 0.75 0.86
14 T2g 1188 1179 0.00 14.79 0.75 0.86
15 T2g 810 804 0.00 7.75 0.75 0.86
15 T2g 810 804 0.00 7.75 0.75 0.86
15 T2g 810 804 0.00 7.75 0.75 0.86
16 T2g 663 658 0.00 0.76 0.75 0.86
16 T2g 663 658 0.00 0.76 0.75 0.86
16 T2g 663 658 0.00 0.76 0.75 0.86
17 T2u 1029 1021 0.00 0.00 0.00 0.00
17 T2u 1029 1021 0.00 0.00 0.00 0.00
17 T2u 1029 1021 0.00 0.00 0.00 0.00
18 T2u 813 807 0.00 0.00 0.00 0.00
18 T2u 813 807 0.00 0.00 0.00 0.00
18 T2u 813 807 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 28390.0 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 28171.3 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
0.11001 0.11001 0.11001

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 0.792 0.792 0.792
C2 -0.792 0.792 0.792
C3 0.792 0.792 -0.792
C4 -0.792 0.792 -0.792
C5 0.792 -0.792 0.792
C6 -0.792 -0.792 0.792
C7 0.792 -0.792 -0.792
C8 -0.792 -0.792 -0.792
H9 1.426 1.426 1.426
H10 -1.426 1.426 1.426
H11 1.426 1.426 -1.426
H12 -1.426 1.426 -1.426
H13 1.426 -1.426 1.426
H14 -1.426 -1.426 1.426
H15 1.426 -1.426 -1.426
H16 -1.426 -1.426 -1.426

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.58411.58412.24021.58412.24022.24022.74371.09842.39262.39263.20052.39263.20053.20053.8420
C21.58412.24021.58412.24021.58412.74372.24022.39261.09843.20052.39263.20052.39263.84203.2005
C31.58412.24021.58412.24022.74371.58412.24022.39263.20051.09842.39263.20053.84202.39263.2005
C42.24021.58411.58412.74372.24022.24021.58413.20052.39262.39261.09843.84203.20053.20052.3926
C51.58412.24022.24022.74371.58411.58412.24022.39263.20053.20053.84201.09842.39262.39263.2005
C62.24021.58412.74372.24021.58412.24021.58413.20052.39263.84203.20052.39261.09843.20052.3926
C72.24022.74371.58412.24021.58412.24021.58413.20053.84202.39263.20052.39263.20051.09842.3926
C82.74372.24022.24021.58412.24021.58411.58413.84203.20053.20052.39263.20052.39262.39261.0984
H91.09842.39262.39263.20052.39263.20053.20053.84202.85232.85234.03382.85234.03384.03384.9404
H102.39261.09843.20052.39263.20052.39263.84203.20052.85234.03382.85234.03382.85234.94044.0338
H112.39263.20051.09842.39263.20053.84202.39263.20052.85234.03382.85234.03384.94042.85234.0338
H123.20052.39262.39261.09843.84203.20053.20052.39264.03382.85232.85234.94044.03384.03382.8523
H132.39263.20053.20053.84201.09842.39262.39263.20052.85234.03384.03384.94042.85232.85234.0338
H143.20052.39263.84203.20052.39261.09843.20052.39264.03382.85234.94044.03382.85234.03382.8523
H153.20053.84202.39263.20052.39263.20051.09842.39264.03384.94042.85234.03382.85234.03382.8523
H163.84203.20053.20052.39263.20052.39262.39261.09844.94044.03384.03382.85234.03382.85232.8523

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 -0.038      
2 C -0.038      
3 C -0.038      
4 C -0.038      
5 C -0.038      
6 C -0.038      
7 C -0.038      
8 C -0.038      
9 H 0.038      
10 H 0.038      
11 H 0.038      
12 H 0.038      
13 H 0.038      
14 H 0.038      
15 H 0.038      
16 H 0.038      


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 -46.531 0.000 0.000
y 0.000 -46.531 0.000
z 0.000 0.000 -46.531
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 10.299 0.000 0.000
y 0.000 10.299 0.000
z 0.000 0.000 10.299


<r2> (average value of r2) Å2
<r2> 168.210
(<r2>)1/2 12.970