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All results from a given calculation for C8H8 (cubane)

using model chemistry: HF/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes OH 1A1G
Energy calculated at HF/daug-cc-pVDZ
 hartrees
Energy at 0K-307.425967
Energy at 298.15K-307.436484
HF Energy-307.425967
Nuclear repulsion energy368.687208
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 HF/daug-cc-pVDZ
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 3280 2991 0.00 638.13 0.00 0.00
2 A1g 1085 989 0.00 92.80 0.00 0.00
3 A2u 3238 2953 0.00 0.00 0.00 0.00
4 A2u 1144 1044 0.00 0.00 0.00 0.00
5 Eg 1226 1118 0.00 1.42 0.75 0.86
5 Eg 1226 1118 0.00 1.42 0.75 0.86
6 Eg 972 887 0.00 24.09 0.75 0.86
6 Eg 972 887 0.00 24.09 0.75 0.86
7 Eu 1272 1160 0.00 0.00 0.00 0.00
7 Eu 1272 1160 0.00 0.00 0.00 0.00
8 Eu 676 616 0.00 0.00 0.00 0.00
8 Eu 676 616 0.00 0.00 0.00 0.00
9 T1g 1258 1147 0.00 0.00 0.75 0.86
9 T1g 1258 1147 0.00 0.00 0.75 0.86
9 T1g 1258 1147 0.00 0.00 0.75 0.86
10 T1u 3259 2972 156.32 0.00 0.00 0.00
10 T1u 3259 2972 156.32 0.00 0.00 0.00
10 T1u 3259 2972 156.32 0.00 0.00 0.00
11 T1u 1386 1264 1.58 0.00 0.00 0.00
11 T1u 1386 1264 1.58 0.00 0.00 0.00
11 T1u 1386 1264 1.58 0.00 0.00 0.00
12 T1u 926 845 11.49 0.00 0.00 0.00
12 T1u 926 845 11.49 0.00 0.00 0.00
12 T1u 926 845 11.49 0.00 0.00 0.00
13 T2g 3248 2962 0.00 229.14 0.75 0.86
13 T2g 3248 2962 0.00 229.15 0.75 0.86
13 T2g 3248 2962 0.00 229.14 0.75 0.86
14 T2g 1355 1236 0.00 4.57 0.75 0.86
14 T2g 1355 1236 0.00 4.57 0.75 0.86
14 T2g 1355 1236 0.00 4.57 0.75 0.86
15 T2g 910 830 0.00 2.65 0.75 0.86
15 T2g 910 830 0.00 2.65 0.75 0.86
15 T2g 910 830 0.00 2.65 0.75 0.86
16 T2g 730 665 0.00 0.31 0.75 0.86
16 T2g 730 665 0.00 0.31 0.75 0.86
16 T2g 730 665 0.00 0.31 0.75 0.86
17 T2u 1192 1087 0.00 0.00 0.00 0.00
17 T2u 1192 1087 0.00 0.00 0.00 0.00
17 T2u 1192 1087 0.00 0.00 0.00 0.00
18 T2u 898 819 0.00 0.00 0.00 0.00
18 T2u 898 819 0.00 0.00 0.00 0.00
18 T2u 898 819 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 31259.6 cm-1
Scaled (by 0.912) Zero Point Vibrational Energy (zpe) 28508.7 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 HF/daug-cc-pVDZ
ABC
0.11302 0.11302 0.11302

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVDZ

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.781 0.781 0.781
C2 -0.781 0.781 0.781
C3 0.781 0.781 -0.781
C4 -0.781 0.781 -0.781
C5 0.781 -0.781 0.781
C6 -0.781 -0.781 0.781
C7 0.781 -0.781 -0.781
C8 -0.781 -0.781 -0.781
H9 1.408 1.408 1.408
H10 -1.408 1.408 1.408
H11 1.408 1.408 -1.408
H12 -1.408 1.408 -1.408
H13 1.408 -1.408 1.408
H14 -1.408 -1.408 1.408
H15 1.408 -1.408 -1.408
H16 -1.408 -1.408 -1.408

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.56251.56252.20981.56252.20982.20982.70641.08542.36172.36173.15872.36173.15873.15873.7917
C21.56252.20981.56252.20981.56252.70642.20982.36171.08543.15872.36173.15872.36173.79173.1587
C31.56252.20981.56252.20982.70641.56252.20982.36173.15871.08542.36173.15873.79172.36173.1587
C42.20981.56251.56252.70642.20982.20981.56253.15872.36172.36171.08543.79173.15873.15872.3617
C51.56252.20982.20982.70641.56251.56252.20982.36173.15873.15873.79171.08542.36172.36173.1587
C62.20981.56252.70642.20981.56252.20981.56253.15872.36173.79173.15872.36171.08543.15872.3617
C72.20982.70641.56252.20981.56252.20981.56253.15873.79172.36173.15872.36173.15871.08542.3617
C82.70642.20982.20981.56252.20981.56251.56253.79173.15873.15872.36173.15872.36172.36171.0854
H91.08542.36172.36173.15872.36173.15873.15873.79172.81582.81583.98212.81583.98213.98214.8771
H102.36171.08543.15872.36173.15872.36173.79173.15872.81583.98212.81583.98212.81584.87713.9821
H112.36173.15871.08542.36173.15873.79172.36173.15872.81583.98212.81583.98214.87712.81583.9821
H123.15872.36172.36171.08543.79173.15873.15872.36173.98212.81582.81584.87713.98213.98212.8158
H132.36173.15873.15873.79171.08542.36172.36173.15872.81583.98213.98214.87712.81582.81583.9821
H143.15872.36173.79173.15872.36171.08543.15872.36173.98212.81584.87713.98212.81583.98212.8158
H153.15873.79172.36173.15872.36173.15871.08542.36173.98214.87712.81583.98212.81583.98212.8158
H163.79173.15873.15872.36173.15872.36172.36171.08544.87713.98213.98212.81583.98212.81582.8158

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 HF/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.340      
2 C 0.340      
3 C 0.340      
4 C 0.340      
5 C 0.340      
6 C 0.340      
7 C 0.340      
8 C 0.340      
9 H -0.340      
10 H -0.340      
11 H -0.340      
12 H -0.340      
13 H -0.340      
14 H -0.340      
15 H -0.340      
16 H -0.340      


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 -47.136 0.000 0.000
y 0.000 -47.136 0.000
z 0.000 0.000 -47.136
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 10.854 0.000 0.000
y 0.000 10.854 0.000
z 0.000 0.000 10.854


<r2> (average value of r2) Å2
<r2> 164.907
(<r2>)1/2 12.842