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/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-232.123682
Energy at 298.15K-232.126651
Nuclear repulsion energy169.624719
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/cc-pVTZ
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 2940 2931 0.00      
2 A 2274 2267 0.00      
3 A 1382 1378 0.00      
4 A 1262 1259 0.00      
5 A 547 545 0.00      
6 A 48 48 0.00      
7 A 2939 2930 85.65      
8 A 2186 2180 3.56      
9 A 1377 1373 21.15      
10 A 925 923 4.26      
11 A 2986 2977 19.97      
11 A 2986 2977 19.97      
12 A 1439 1434 13.03      
12 A 1439 1434 13.03      
13 A 1025 1022 2.18      
13 A 1025 1022 2.18      
14 A 355 354 4.68      
14 A 355 354 4.68      
15 A 98 98 7.08      
15 A 98 98 7.08      
16 A 2986 2977 0.00      
16 A 2986 2977 0.00      
17 A 1439 1434 0.00      
17 A 1439 1434 0.00      
18 A 1019 1016 0.00      
18 A 1019 1016 0.00      
19 A 496 495 0.00      
19 A 496 495 0.00      
20 A 233 233 0.00      
20 A 233 233 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20015.7 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 19955.6 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/cc-pVTZ
ABC
2.65439 0.03688 0.03688

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.681
C2 0.000 0.000 -0.681
C3 0.000 0.000 1.901
C4 0.000 0.000 -1.901
C5 0.000 0.000 3.358
C6 0.000 0.000 -3.358
H7 0.000 1.025 3.756
H8 -0.888 -0.512 3.756
H9 0.888 -0.512 3.756
H10 0.000 1.025 -3.756
H11 0.888 -0.512 -3.756
H12 -0.888 -0.512 -3.756

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.36251.21972.58212.67724.03973.24123.24123.24124.55424.55424.5542
C21.36252.58211.21974.03972.67724.55424.55424.55423.24123.24123.2412
C31.21972.58213.80181.45765.25942.11952.11952.11955.74915.74915.7491
C42.58211.21973.80185.25941.45765.74915.74915.74912.11952.11952.1195
C52.67724.03971.45765.25946.71691.09931.09931.09937.18807.18807.1880
C64.03972.67725.25941.45766.71697.18807.18807.18801.09931.09931.0993
H73.24124.55422.11955.74911.09937.18801.77501.77507.51237.71927.7192
H83.24124.55422.11955.74911.09937.18801.77501.77507.71927.71927.5123
H93.24124.55422.11955.74911.09937.18801.77501.77507.71927.51237.7192
H104.55423.24125.74912.11957.18801.09937.51237.71927.71921.77501.7750
H114.55423.24125.74912.11957.18801.09937.71927.71927.51231.77501.7750
H124.55423.24125.74912.11957.18801.09937.71927.51237.71921.77501.7750

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 111.209 C3 C5 H8 111.209
C3 C5 H9 111.209 C4 C6 H10 111.209
C4 C6 H11 111.209 C4 C6 H12 111.209
H7 C5 H8 107.679 H7 C5 H9 107.679
H8 C5 H9 107.679 H10 C6 H11 107.679
H10 C6 H12 107.679 H11 C6 H12 107.679
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.467      
2 C 0.467      
3 C -0.484      
4 C -0.484      
5 C -0.322      
6 C -0.322      
7 H 0.113      
8 H 0.113      
9 H 0.113      
10 H 0.113      
11 H 0.113      
12 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 -36.929 0.000 0.000
y 0.000 -36.929 0.000
z 0.000 0.000 -20.459
Traceless
 xyz
x -8.235 0.000 0.000
y 0.000 -8.235 0.000
z 0.000 0.000 16.470
Polar
3z2-r232.939
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 294.872
(<r2>)1/2 17.172