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: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-232.048324
Energy at 298.15K-232.051282
Nuclear repulsion energy169.443025
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/6-31G(2df,p)
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 2941 2925 0.00      
2 A 2300 2287 0.00      
3 A 1379 1371 0.00      
4 A 1274 1267 0.00      
5 A 550 547 0.00      
6 A 22 22 0.00      
7 A 2940 2924 96.86      
8 A 2198 2186 3.76      
9 A 1372 1364 41.38      
10 A 931 926 2.68      
11 A 2993 2976 22.12      
11 A 2993 2976 22.12      
12 A 1435 1427 9.61      
12 A 1435 1427 9.61      
13 A 1023 1017 3.19      
13 A 1023 1017 3.18      
14 A 360 358 3.51      
14 A 360 358 3.51      
15 A 96 95 5.48      
15 A 96 95 5.47      
16 A 2993 2976 0.00      
16 A 2993 2976 0.00      
17 A 1435 1427 0.00      
17 A 1435 1427 0.00      
18 A 1017 1011 0.00      
18 A 1017 1011 0.00      
19 A 529 526 0.00      
19 A 529 526 0.00      
20 A 237 236 0.00      
20 A 237 236 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20069.3 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 19958.9 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 BLYP/6-31G(2df,p)
ABC
2.64130 0.03684 0.03684

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.679
C2 0.000 0.000 -0.679
C3 0.000 0.000 1.902
C4 0.000 0.000 -1.902
C5 0.000 0.000 3.359
C6 0.000 0.000 -3.359
H7 0.000 1.027 3.763
H8 -0.890 -0.514 3.763
H9 0.890 -0.514 3.763
H10 0.000 1.027 -3.763
H11 0.890 -0.514 -3.763
H12 -0.890 -0.514 -3.763

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.35801.22322.58122.68034.03843.25053.25053.25054.55914.55914.5591
C21.35802.58121.22324.03842.68034.55914.55914.55913.25053.25053.2505
C31.22322.58123.80431.45725.26152.12552.12552.12555.75745.75745.7574
C42.58121.22323.80435.26151.45725.75745.75745.75742.12552.12552.1255
C52.68034.03841.45725.26156.71871.10381.10381.10387.19597.19597.1959
C64.03842.68035.26151.45726.71877.19597.19597.19591.10381.10381.1038
H73.25054.55912.12555.75741.10387.19591.77941.77947.52577.73327.7332
H83.25054.55912.12555.75741.10387.19591.77941.77947.73327.73327.5257
H93.25054.55912.12555.75741.10387.19591.77941.77947.73327.52577.7332
H104.55913.25055.75742.12557.19591.10387.52577.73327.73321.77941.7794
H114.55913.25055.75742.12557.19591.10387.73327.73327.52571.77941.7794
H124.55913.25055.75742.12557.19591.10387.73327.52577.73321.77941.7794

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 111.443 C3 C5 H8 111.443
C3 C5 H9 111.443 C4 C6 H10 111.443
C4 C6 H11 111.443 C4 C6 H12 111.443
H7 C5 H8 107.429 H7 C5 H9 107.429
H8 C5 H9 107.429 H10 C6 H11 107.429
H10 C6 H12 107.429 H11 C6 H12 107.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.123      
2 C -0.123      
3 C 0.211      
4 C 0.211      
5 C -0.505      
6 C -0.505      
7 H 0.139      
8 H 0.139      
9 H 0.139      
10 H 0.139      
11 H 0.139      
12 H 0.139      


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 -35.764 0.000 0.000
y 0.000 -35.764 0.000
z 0.000 0.000 -20.177
Traceless
 xyz
x -7.793 0.000 0.000
y 0.000 -7.793 0.000
z 0.000 0.000 15.587
Polar
3z2-r231.174
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 5.576 0.000 0.000
y 0.000 5.576 0.000
z 0.000 0.000 22.351


<r2> (average value of r2) Å2
<r2> 294.755
(<r2>)1/2 17.168