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All results from a given calculation for C8H8 (cubane)

using model chemistry: BLYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-309.394851
Energy at 298.15K-309.404592
HF Energy-309.394851
Nuclear repulsion energy364.416342
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/6-311+G(3df,2p)
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 3038 3021 0.00 831.60 0.00 0.00
2 A1g 975 970 0.00 70.04 0.00 0.00
3 A2u 3002 2986 0.00 0.00 0.00 0.00
4 A2u 1018 1012 0.00 0.00 0.00 0.00
5 Eg 1060 1054 0.00 0.10 0.75 0.86
5 Eg 1060 1054 0.00 0.10 0.75 0.86
6 Eg 878 873 0.00 24.13 0.75 0.86
6 Eg 878 873 0.00 24.13 0.75 0.86
7 Eu 1143 1137 0.00 0.00 0.00 0.00
7 Eu 1143 1137 0.00 0.00 0.00 0.00
8 Eu 599 596 0.00 0.00 0.00 0.00
8 Eu 599 596 0.00 0.00 0.00 0.00
9 T1g 1126 1119 0.00 0.00 0.00 0.00
9 T1g 1126 1119 0.00 0.00 0.75 0.86
9 T1g 1126 1119 0.00 0.00 0.75 0.86
10 T1u 3019 3003 157.30 0.00 0.00 0.00
10 T1u 3019 3003 157.30 0.00 0.00 0.00
10 T1u 3019 3003 157.30 0.00 0.00 0.00
11 T1u 1218 1211 4.15 0.00 0.00 0.00
11 T1u 1218 1211 4.15 0.00 0.00 0.00
11 T1u 1218 1211 4.15 0.00 0.00 0.00
12 T1u 829 825 8.37 0.00 0.00 0.00
12 T1u 829 825 8.37 0.00 0.00 0.00
12 T1u 829 825 8.37 0.00 0.00 0.00
13 T2g 3012 2996 0.00 307.14 0.75 0.86
13 T2g 3012 2996 0.00 307.14 0.75 0.86
13 T2g 3012 2996 0.00 307.14 0.75 0.86
14 T2g 1166 1159 0.00 6.13 0.75 0.86
14 T2g 1166 1159 0.00 6.13 0.75 0.86
14 T2g 1166 1159 0.00 6.13 0.75 0.86
15 T2g 801 797 0.00 1.47 0.75 0.86
15 T2g 801 797 0.00 1.47 0.75 0.86
15 T2g 801 797 0.00 1.47 0.75 0.86
16 T2g 660 657 0.00 0.60 0.75 0.86
16 T2g 660 657 0.00 0.60 0.75 0.86
16 T2g 660 657 0.00 0.60 0.75 0.86
17 T2u 1012 1007 0.00 0.00 0.00 0.00
17 T2u 1012 1007 0.00 0.00 0.00 0.00
17 T2u 1012 1007 0.00 0.00 0.00 0.00
18 T2u 800 796 0.00 0.00 0.00 0.00
18 T2u 800 796 0.00 0.00 0.00 0.00
18 T2u 800 796 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 28162.3 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 28007.4 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/6-311+G(3df,2p)
ABC
0.11038 0.11038 0.11038

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311+G(3df,2p)

Point Group is Oh

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.791 0.791 0.791
C2 -0.791 0.791 0.791
C3 0.791 0.791 -0.791
C4 -0.791 0.791 -0.791
C5 0.791 -0.791 0.791
C6 -0.791 -0.791 0.791
C7 0.791 -0.791 -0.791
C8 -0.791 -0.791 -0.791
H9 1.422 1.422 1.422
H10 -1.422 1.422 1.422
H11 1.422 1.422 -1.422
H12 -1.422 1.422 -1.422
H13 1.422 -1.422 1.422
H14 -1.422 -1.422 1.422
H15 1.422 -1.422 -1.422
H16 -1.422 -1.422 -1.422

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.58181.58182.23701.58182.23702.23702.73981.09352.38642.38643.19292.38643.19293.19293.8333
C21.58182.23701.58182.23701.58182.73982.23702.38641.09353.19292.38643.19292.38643.83333.1929
C31.58182.23701.58182.23702.73981.58182.23702.38643.19291.09352.38643.19293.83332.38643.1929
C42.23701.58181.58182.73982.23702.23701.58183.19292.38642.38641.09353.83333.19293.19292.3864
C51.58182.23702.23702.73981.58181.58182.23702.38643.19293.19293.83331.09352.38642.38643.1929
C62.23701.58182.73982.23701.58182.23701.58183.19292.38643.83333.19292.38641.09353.19292.3864
C72.23702.73981.58182.23701.58182.23701.58183.19293.83332.38643.19292.38643.19291.09352.3864
C82.73982.23702.23701.58182.23701.58181.58183.83333.19293.19292.38643.19292.38642.38641.0935
H91.09352.38642.38643.19292.38643.19293.19293.83332.84442.84444.02262.84444.02264.02264.9267
H102.38641.09353.19292.38643.19292.38643.83333.19292.84444.02262.84444.02262.84444.92674.0226
H112.38643.19291.09352.38643.19293.83332.38643.19292.84444.02262.84444.02264.92672.84444.0226
H123.19292.38642.38641.09353.83333.19293.19292.38644.02262.84442.84444.92674.02264.02262.8444
H132.38643.19293.19293.83331.09352.38642.38643.19292.84444.02264.02264.92672.84442.84444.0226
H143.19292.38643.83333.19292.38641.09353.19292.38644.02262.84444.92674.02262.84444.02262.8444
H153.19293.83332.38643.19292.38643.19291.09352.38644.02264.92672.84444.02262.84444.02262.8444
H163.83333.19293.19292.38643.19292.38642.38641.09354.92674.02264.02262.84444.02262.84442.8444

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/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.113      
2 C -0.113      
3 C -0.113      
4 C -0.113      
5 C -0.113      
6 C -0.113      
7 C -0.113      
8 C -0.113      
9 H 0.113      
10 H 0.113      
11 H 0.113      
12 H 0.113      
13 H 0.113      
14 H 0.113      
15 H 0.113      
16 H 0.113      


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 -47.686 0.000 0.000
y 0.000 -47.686 0.000
z 0.000 0.000 -47.686
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 12.006 0.000 0.000
y 0.000 12.006 0.000
z 0.000 0.000 12.006


<r2> (average value of r2) Å2
<r2> 168.408
(<r2>)1/2 12.977