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All results from a given calculation for C8H8 (cubane)

using model chemistry: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes OH 1A1G
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-309.157251
Energy at 298.15K-309.167012
HF Energy-309.157251
Nuclear repulsion energy366.153251
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 PBEPBE/TZVP
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 3064 3030 0.00 749.51 0.00 0.00
2 A1g 1002 991 0.00 59.86 0.00 0.00
3 A2u 3027 2993 0.00 0.00 0.00 0.00
4 A2u 906 896 0.00 0.00 0.00 0.00
5 Eg 1082 1070 0.00 0.03 0.75 0.86
5 Eg 1082 1070 0.00 0.03 0.75 0.86
6 Eg 899 889 0.00 30.07 0.75 0.86
6 Eg 899 889 0.00 30.07 0.75 0.86
7 Eu 1144 1131 0.00 0.00 0.00 0.00
7 Eu 1144 1131 0.00 0.00 0.00 0.00
8 Eu 588 581 0.00 0.00 0.00 0.00
8 Eu 588 581 0.00 0.00 0.00 0.00
9 T1g 1121 1109 0.00 0.00 0.00 0.00
9 T1g 1121 1109 0.00 0.00 0.00 0.00
9 T1g 1121 1109 0.00 0.00 0.00 0.00
10 T1u 3045 3011 134.23 0.00 0.00 0.00
10 T1u 3045 3011 134.23 0.00 0.00 0.00
10 T1u 3045 3011 134.23 0.00 0.00 0.00
11 T1u 1227 1213 7.78 0.00 0.00 0.00
11 T1u 1227 1213 7.78 0.00 0.00 0.00
11 T1u 1227 1213 7.78 0.00 0.00 0.00
12 T1u 848 838 11.13 0.00 0.00 0.00
12 T1u 848 838 11.13 0.00 0.00 0.00
12 T1u 848 838 11.13 0.00 0.00 0.00
13 T2g 3038 3004 0.00 277.94 0.75 0.86
13 T2g 3038 3004 0.00 277.94 0.75 0.86
13 T2g 3038 3004 0.00 277.94 0.75 0.86
14 T2g 1175 1162 0.00 7.45 0.75 0.86
14 T2g 1175 1162 0.00 7.45 0.75 0.86
14 T2g 1175 1162 0.00 7.45 0.75 0.86
15 T2g 816 807 0.00 4.45 0.75 0.86
15 T2g 816 807 0.00 4.45 0.75 0.86
15 T2g 816 807 0.00 4.45 0.75 0.86
16 T2g 641 633 0.00 1.39 0.75 0.86
16 T2g 641 633 0.00 1.39 0.75 0.86
16 T2g 641 633 0.00 1.39 0.75 0.86
17 T2u 1031 1020 0.00 0.00 0.00 0.00
17 T2u 1031 1020 0.00 0.00 0.00 0.00
17 T2u 1031 1020 0.00 0.00 0.00 0.00
18 T2u 821 812 0.00 0.00 0.00 0.00
18 T2u 821 812 0.00 0.00 0.00 0.00
18 T2u 821 812 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 28355.4 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 28037.9 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 PBEPBE/TZVP
ABC
0.11150 0.11150 0.11150

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.786 0.786 0.786
C2 -0.786 0.786 0.786
C3 0.786 0.786 -0.786
C4 -0.786 0.786 -0.786
C5 0.786 -0.786 0.786
C6 -0.786 -0.786 0.786
C7 0.786 -0.786 -0.786
C8 -0.786 -0.786 -0.786
H9 1.419 1.419 1.419
H10 -1.419 1.419 1.419
H11 1.419 1.419 -1.419
H12 -1.419 1.419 -1.419
H13 1.419 -1.419 1.419
H14 -1.419 -1.419 1.419
H15 1.419 -1.419 -1.419
H16 -1.419 -1.419 -1.419

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.57261.57262.22401.57262.22402.22402.72391.09632.38032.38033.18272.38033.18273.18273.8201
C21.57262.22401.57262.22401.57262.72392.22402.38031.09633.18272.38033.18272.38033.82013.1827
C31.57262.22401.57262.22402.72391.57262.22402.38033.18271.09632.38033.18273.82012.38033.1827
C42.22401.57261.57262.72392.22402.22401.57263.18272.38032.38031.09633.82013.18273.18272.3803
C51.57262.22402.22402.72391.57261.57262.22402.38033.18273.18273.82011.09632.38032.38033.1827
C62.22401.57262.72392.22401.57262.22401.57263.18272.38033.82013.18272.38031.09633.18272.3803
C72.22402.72391.57262.22401.57262.22401.57263.18273.82012.38033.18272.38033.18271.09632.3803
C82.72392.22402.22401.57262.22401.57261.57263.82013.18273.18272.38033.18272.38032.38031.0963
H91.09632.38032.38033.18272.38033.18273.18273.82012.83852.83854.01422.83854.01424.01424.9164
H102.38031.09633.18272.38033.18272.38033.82013.18272.83854.01422.83854.01422.83854.91644.0142
H112.38033.18271.09632.38033.18273.82012.38033.18272.83854.01422.83854.01424.91642.83854.0142
H123.18272.38032.38031.09633.82013.18273.18272.38034.01422.83852.83854.91644.01424.01422.8385
H132.38033.18273.18273.82011.09632.38032.38033.18272.83854.01424.01424.91642.83852.83854.0142
H143.18272.38033.82013.18272.38031.09633.18272.38034.01422.83854.91644.01422.83854.01422.8385
H153.18273.82012.38033.18272.38033.18271.09632.38034.01424.91642.83854.01422.83854.01422.8385
H163.82013.18273.18272.38033.18272.38032.38031.09634.91644.01424.01422.83854.01422.83852.8385

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 PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.133      
2 C -0.133      
3 C -0.133      
4 C -0.133      
5 C -0.133      
6 C -0.133      
7 C -0.133      
8 C -0.133      
9 H 0.133      
10 H 0.133      
11 H 0.133      
12 H 0.133      
13 H 0.133      
14 H 0.133      
15 H 0.133      
16 H 0.133      


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 -47.080 0.000 0.000
y 0.000 -47.080 0.000
z 0.000 0.000 -47.080
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 11.243 0.000 0.000
y 0.000 11.243 0.000
z 0.000 0.000 11.243


<r2> (average value of r2) Å2
<r2> 166.782
(<r2>)1/2 12.914