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All results from a given calculation for C8H8 (cubane)

using model chemistry: HF/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-307.504008
Energy at 298.15K-307.514550
HF Energy-307.504008
Nuclear repulsion energy370.126318
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/cc-pVQZ
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 3276 2976 0.00 614.67 0.00 0.00
2 A1g 1084 984 0.00 80.16 0.00 0.00
3 A2u 3235 2939 0.00 0.00 0.00 0.00
4 A2u 1146 1041 0.00 0.00 0.00 0.00
5 Eg 1229 1117 0.00 0.98 0.75 0.86
5 Eg 1229 1117 0.00 0.98 0.75 0.86
6 Eg 979 889 0.00 24.95 0.75 0.86
6 Eg 979 889 0.00 24.95 0.75 0.86
7 Eu 1300 1181 0.00 0.00 0.00 0.00
7 Eu 1300 1181 0.00 0.00 0.00 0.00
8 Eu 684 621 0.00 0.00 0.00 0.00
8 Eu 684 621 0.00 0.00 0.00 0.00
9 T1g 1280 1163 0.00 0.00 0.00 0.00
9 T1g 1280 1163 0.00 0.00 0.00 0.00
9 T1g 1280 1163 0.00 0.00 0.00 0.00
10 T1u 3255 2957 152.05 0.00 0.00 0.00
10 T1u 3255 2957 152.05 0.00 0.00 0.00
10 T1u 3255 2957 152.05 0.00 0.00 0.00
11 T1u 1397 1269 1.88 0.00 0.00 0.00
11 T1u 1397 1269 1.88 0.00 0.00 0.00
11 T1u 1397 1269 1.88 0.00 0.00 0.00
12 T1u 930 845 11.23 0.00 0.00 0.00
12 T1u 930 845 11.23 0.00 0.00 0.00
12 T1u 930 845 11.23 0.00 0.00 0.00
13 T2g 3246 2948 0.00 223.62 0.75 0.86
13 T2g 3246 2948 0.00 223.62 0.75 0.86
13 T2g 3246 2948 0.00 223.62 0.75 0.86
14 T2g 1364 1239 0.00 6.49 0.75 0.86
14 T2g 1364 1239 0.00 6.49 0.75 0.86
14 T2g 1364 1239 0.00 6.49 0.75 0.86
15 T2g 916 832 0.00 3.03 0.75 0.86
15 T2g 916 832 0.00 3.03 0.75 0.86
15 T2g 916 832 0.00 3.03 0.75 0.86
16 T2g 737 670 0.00 0.89 0.75 0.86
16 T2g 737 670 0.00 0.89 0.75 0.86
16 T2g 737 670 0.00 0.89 0.75 0.86
17 T2u 1194 1085 0.00 0.00 0.00 0.00
17 T2u 1194 1085 0.00 0.00 0.00 0.00
17 T2u 1194 1085 0.00 0.00 0.00 0.00
18 T2u 906 823 0.00 0.00 0.00 0.00
18 T2u 906 823 0.00 0.00 0.00 0.00
18 T2u 906 823 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 31401.1 cm-1
Scaled (by 0.9084) Zero Point Vibrational Energy (zpe) 28524.8 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/cc-pVQZ
ABC
0.11388 0.11388 0.11388

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

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.779 0.779 0.779
C2 -0.779 0.779 0.779
C3 0.779 0.779 -0.779
C4 -0.779 0.779 -0.779
C5 0.779 -0.779 0.779
C6 -0.779 -0.779 0.779
C7 0.779 -0.779 -0.779
C8 -0.779 -0.779 -0.779
H9 1.401 1.401 1.401
H10 -1.401 1.401 1.401
H11 1.401 1.401 -1.401
H12 -1.401 1.401 -1.401
H13 1.401 -1.401 1.401
H14 -1.401 -1.401 1.401
H15 1.401 -1.401 -1.401
H16 -1.401 -1.401 -1.401

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.55711.55712.20211.55712.20212.20212.69701.07792.35052.35053.14452.35053.14453.14453.7750
C21.55712.20211.55712.20211.55712.69702.20212.35051.07793.14452.35053.14452.35053.77503.1445
C31.55712.20211.55712.20212.69701.55712.20212.35053.14451.07792.35053.14453.77502.35053.1445
C42.20211.55711.55712.69702.20212.20211.55713.14452.35052.35051.07793.77503.14453.14452.3505
C51.55712.20212.20212.69701.55711.55712.20212.35053.14453.14453.77501.07792.35052.35053.1445
C62.20211.55712.69702.20211.55712.20211.55713.14452.35053.77503.14452.35051.07793.14452.3505
C72.20212.69701.55712.20211.55712.20211.55713.14453.77502.35053.14452.35053.14451.07792.3505
C82.69702.20212.20211.55712.20211.55711.55713.77503.14453.14452.35053.14452.35052.35051.0779
H91.07792.35052.35053.14452.35053.14453.14453.77502.80182.80183.96242.80183.96243.96244.8529
H102.35051.07793.14452.35053.14452.35053.77503.14452.80183.96242.80183.96242.80184.85293.9624
H112.35053.14451.07792.35053.14453.77502.35053.14452.80183.96242.80183.96244.85292.80183.9624
H123.14452.35052.35051.07793.77503.14453.14452.35053.96242.80182.80184.85293.96243.96242.8018
H132.35053.14453.14453.77501.07792.35052.35053.14452.80183.96243.96244.85292.80182.80183.9624
H143.14452.35053.77503.14452.35051.07793.14452.35053.96242.80184.85293.96242.80183.96242.8018
H153.14453.77502.35053.14452.35053.14451.07792.35053.96244.85292.80183.96242.80183.96242.8018
H163.77503.14453.14452.35053.14452.35052.35051.07794.85293.96243.96242.80183.96242.80182.8018

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/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.207      
2 C -0.207      
3 C -0.207      
4 C -0.207      
5 C -0.207      
6 C -0.207      
7 C -0.207      
8 C -0.207      
9 H 0.207      
10 H 0.207      
11 H 0.207      
12 H 0.207      
13 H 0.207      
14 H 0.207      
15 H 0.207      
16 H 0.207      


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 -46.898 0.000 0.000
y 0.000 -46.898 0.000
z 0.000 0.000 -46.898
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 10.588 0.000 0.000
y 0.000 10.588 0.000
z 0.000 0.000 10.588


<r2> (average value of r2) Å2
<r2> 163.682
(<r2>)1/2 12.794