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All results from a given calculation for C8H8 (cubane)

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-305.581726
Energy at 298.15K-305.591369
HF Energy-305.581726
Nuclear repulsion energy359.198763
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/STO-3G
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 3320 3071 0.00 231.47 0.00 0.00
2 A1g 1047 968 0.00 37.72 0.00 0.00
3 A2u 3281 3036 0.00 0.00 0.00 0.00
4 A2u 1096 1014 0.00 0.00 0.00 0.00
5 Eg 1179 1091 0.00 0.65 0.75 0.86
5 Eg 1179 1091 0.00 0.65 0.75 0.86
6 Eg 955 884 0.00 39.84 0.75 0.86
6 Eg 955 884 0.00 39.84 0.75 0.86
7 Eu 1207 1117 0.00 0.00 0.00 0.00
7 Eu 1207 1117 0.00 0.00 0.00 0.00
8 Eu 653 604 0.00 0.00 0.00 0.00
8 Eu 653 604 0.00 0.00 0.00 0.00
9 T1g 1186 1097 0.00 0.00 0.00 0.00
9 T1g 1186 1097 0.00 0.00 0.00 0.00
9 T1g 1186 1097 0.00 0.00 0.00 0.00
10 T1u 3301 3054 7.94 0.00 0.00 0.00
10 T1u 3301 3054 7.94 0.00 0.00 0.00
10 T1u 3301 3054 7.94 0.00 0.00 0.00
11 T1u 1323 1224 0.05 0.00 0.00 0.00
11 T1u 1323 1224 0.05 0.00 0.00 0.00
11 T1u 1323 1224 0.05 0.00 0.00 0.00
12 T1u 896 829 0.61 0.00 0.00 0.00
12 T1u 896 829 0.61 0.00 0.00 0.00
12 T1u 896 829 0.61 0.00 0.00 0.00
13 T2g 3291 3045 0.00 107.58 0.75 0.86
13 T2g 3291 3045 0.00 107.58 0.75 0.86
13 T2g 3291 3045 0.00 107.58 0.75 0.86
14 T2g 1305 1208 0.00 14.06 0.75 0.86
14 T2g 1305 1208 0.00 14.06 0.75 0.86
14 T2g 1305 1208 0.00 14.06 0.75 0.86
15 T2g 883 817 0.00 9.25 0.75 0.86
15 T2g 883 817 0.00 9.25 0.75 0.86
15 T2g 883 817 0.00 9.25 0.75 0.86
16 T2g 732 677 0.00 1.05 0.75 0.86
16 T2g 732 677 0.00 1.05 0.75 0.86
16 T2g 732 677 0.00 1.05 0.75 0.86
17 T2u 1156 1069 0.00 0.00 0.00 0.00
17 T2u 1156 1069 0.00 0.00 0.00 0.00
17 T2u 1156 1069 0.00 0.00 0.00 0.00
18 T2u 899 832 0.00 0.00 0.00 0.00
18 T2u 899 832 0.00 0.00 0.00 0.00
18 T2u 899 832 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 30821.3 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 28515.9 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/STO-3G
ABC
0.10726 0.10726 0.10726

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.802 0.802 0.802
C2 -0.802 0.802 0.802
C3 0.802 0.802 -0.802
C4 -0.802 0.802 -0.802
C5 0.802 -0.802 0.802
C6 -0.802 -0.802 0.802
C7 0.802 -0.802 -0.802
C8 -0.802 -0.802 -0.802
H9 1.444 1.444 1.444
H10 -1.444 1.444 1.444
H11 1.444 1.444 -1.444
H12 -1.444 1.444 -1.444
H13 1.444 -1.444 1.444
H14 -1.444 -1.444 1.444
H15 1.444 -1.444 -1.444
H16 -1.444 -1.444 -1.444

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.60441.60442.26901.60442.26902.26902.77891.11112.42222.42223.24042.42223.24043.24043.8901
C21.60442.26901.60442.26901.60442.77892.26902.42221.11113.24042.42223.24042.42223.89013.2404
C31.60442.26901.60442.26902.77891.60442.26902.42223.24041.11112.42223.24043.89012.42223.2404
C42.26901.60441.60442.77892.26902.26901.60443.24042.42222.42221.11113.89013.24043.24042.4222
C51.60442.26902.26902.77891.60441.60442.26902.42223.24043.24043.89011.11112.42222.42223.2404
C62.26901.60442.77892.26901.60442.26901.60443.24042.42223.89013.24042.42221.11113.24042.4222
C72.26902.77891.60442.26901.60442.26901.60443.24043.89012.42223.24042.42223.24041.11112.4222
C82.77892.26902.26901.60442.26901.60441.60443.89013.24043.24042.42223.24042.42222.42221.1111
H91.11112.42222.42223.24042.42223.24043.24043.89012.88742.88744.08342.88744.08344.08345.0012
H102.42221.11113.24042.42223.24042.42223.89013.24042.88744.08342.88744.08342.88745.00124.0834
H112.42223.24041.11112.42223.24043.89012.42223.24042.88744.08342.88744.08345.00122.88744.0834
H123.24042.42222.42221.11113.89013.24043.24042.42224.08342.88742.88745.00124.08344.08342.8874
H132.42223.24043.24043.89011.11112.42222.42223.24042.88744.08344.08345.00122.88742.88744.0834
H143.24042.42223.89013.24042.42221.11113.24042.42224.08342.88745.00124.08342.88744.08342.8874
H153.24043.89012.42223.24042.42223.24041.11112.42224.08345.00122.88744.08342.88744.08342.8874
H163.89013.24043.24042.42223.24042.42222.42221.11115.00124.08344.08342.88744.08342.88742.8874

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/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.067      
2 C -0.067      
3 C -0.067      
4 C -0.067      
5 C -0.067      
6 C -0.067      
7 C -0.067      
8 C -0.067      
9 H 0.067      
10 H 0.067      
11 H 0.067      
12 H 0.067      
13 H 0.067      
14 H 0.067      
15 H 0.067      
16 H 0.067      


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 -43.514 0.000 0.000
y 0.000 -43.514 0.000
z 0.000 0.000 -43.514
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 5.860 0.000 0.000
y 0.000 5.860 0.000
z 0.000 0.000 5.860


<r2> (average value of r2) Å2
<r2> 169.873
(<r2>)1/2 13.034