return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C6H6 (2,4-Hexadiyne)

using model chemistry: LSDA/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at LSDA/6-31G**
 hartrees
Energy at 0K-230.782221
Energy at 298.15K-230.785355
Nuclear repulsion energy170.235158
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 LSDA/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 2966 2910 0.00      
2 A 2347 2303 0.00      
3 A 1389 1363 0.00      
4 A 1308 1283 0.00      
5 A 576 565 0.00      
6 A 14 13 0.00      
7 A 2965 2910 50.53      
8 A 2241 2199 10.94      
9 A 1348 1322 7.30      
10 A 988 969 9.29      
11 A 3041 2984 5.09      
11 A 3041 2984 5.09      
12 A 1408 1382 18.59      
12 A 1408 1382 18.59      
13 A 992 973 12.27      
13 A 992 973 12.26      
14 A 364 357 4.71      
14 A 364 357 4.71      
15 A 105 103 6.93      
15 A 105 103 6.92      
16 A 3041 2985 0.00      
16 A 3041 2985 0.00      
17 A 1408 1382 0.00      
17 A 1408 1382 0.00      
18 A 986 967 0.00      
18 A 986 967 0.00      
19 A 665 653 0.00      
19 A 665 653 0.00      
20 A 236 232 0.00      
20 A 236 232 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20317.0 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 19937.1 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 LSDA/6-31G**
ABC
2.64227 0.03723 0.03723

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G**

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.676
C2 0.000 0.000 -0.676
C3 0.000 0.000 1.901
C4 0.000 0.000 -1.901
C5 0.000 0.000 3.336
C6 0.000 0.000 -3.336
H7 0.000 1.027 3.743
H8 -0.890 -0.514 3.743
H9 0.890 -0.514 3.743
H10 0.000 1.027 -3.743
H11 0.890 -0.514 -3.743
H12 -0.890 -0.514 -3.743

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.35281.22472.57762.65994.01273.23443.23443.23444.53764.53764.5376
C21.35282.57761.22474.01272.65994.53764.53764.53763.23443.23443.2344
C31.22472.57763.80231.43525.23742.10932.10932.10935.73725.73725.7372
C42.57761.22473.80235.23741.43525.73725.73725.73722.10932.10932.1093
C52.65994.01271.43525.23746.67261.10491.10491.10497.15387.15387.1538
C64.01272.65995.23741.43526.67267.15387.15387.15381.10491.10491.1049
H73.23444.53762.10935.73721.10497.15381.77911.77917.48687.69537.6953
H83.23444.53762.10935.73721.10497.15381.77911.77917.69537.69537.4868
H93.23444.53762.10935.73721.10497.15381.77911.77917.69537.48687.6953
H104.53763.23445.73722.10937.15381.10497.48687.69537.69531.77911.7791
H114.53763.23445.73722.10937.15381.10497.69537.69537.48681.77911.7791
H124.53763.23445.73722.10937.15381.10497.69537.48687.69531.77911.7791

picture of 2,4-Hexadiyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 180.000 C1 C3 C5 180.000
C2 C1 C3 180.000 C2 C4 C6 180.000
C3 C5 H7 111.619 C3 C5 H8 111.619
C3 C5 H9 111.619 C4 C6 H10 111.619
C4 C6 H11 111.619 C4 C6 H12 111.619
H7 C5 H8 107.240 H7 C5 H9 107.240
H8 C5 H9 107.240 H10 C6 H11 107.240
H10 C6 H12 107.240 H11 C6 H12 107.240
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.832      
2 C 0.832      
3 C -0.844      
4 C -0.844      
5 C -0.536      
6 C -0.536      
7 H 0.183      
8 H 0.183      
9 H 0.183      
10 H 0.183      
11 H 0.183      
12 H 0.183      


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 -35.644 0.000 0.000
y 0.000 -35.644 0.000
z 0.000 0.000 -18.158
Traceless
 xyz
x -8.743 0.000 0.000
y 0.000 -8.743 0.000
z 0.000 0.000 17.486
Polar
3z2-r234.972
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 5.036 0.000 0.000
y 0.000 5.036 0.000
z 0.000 0.000 22.505


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000