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 C6H4 ((E)-Hexa-1,5-diyne-3-ene)

using model chemistry: B3LYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1Ag
Energy calculated at B3LYP/TZVP
 hartrees
Energy at 0K-230.968890
Energy at 298.15K-230.969992
HF Energy-230.968890
Nuclear repulsion energy162.130604
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 B3LYP/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3476 3356 0.00      
2 Ag 3153 3044 0.00      
3 Ag 2192 2117 0.00      
4 Ag 1646 1589 0.00      
5 Ag 1325 1279 0.00      
6 Ag 1031 995 0.00      
7 Ag 683 660 0.00      
8 Ag 533 514 0.00      
9 Ag 245 236 0.00      
10 Au 971 938 47.05      
11 Au 644 621 101.19      
12 Au 522 504 8.57      
13 Au 119 115 1.75      
14 Bg 872 842 0.00      
15 Bg 644 621 0.00      
16 Bg 355 343 0.00      
17 Bu 3476 3356 201.35      
18 Bu 3162 3053 8.08      
19 Bu 2216 2139 2.30      
20 Bu 1301 1256 0.60      
21 Bu 1044 1008 15.77      
22 Bu 684 660 99.98      
23 Bu 517 499 17.07      
24 Bu 130 125 1.38      

Unscaled Zero Point Vibrational Energy (zpe) 15470.4 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 14935.1 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 B3LYP/TZVP
ABC
1.54744 0.04882 0.04733

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.560 0.374 0.000
C2 0.560 -0.374 0.000
C3 -0.560 1.788 0.000
C4 0.560 -1.788 0.000
H5 -1.528 -0.117 0.000
H6 1.528 0.117 0.000
C7 -0.560 2.993 0.000
C8 0.560 -2.993 0.000
H9 -0.565 4.055 0.000
H10 0.565 -4.055 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 C7 C8 H9 H10
C11.34761.41392.43551.08552.10442.61863.54883.68094.5702
C21.34762.43551.41392.10441.08553.54882.61864.57023.6809
C31.41392.43553.74772.13702.67491.20484.91062.26715.9507
C42.43551.41393.74772.67492.13704.91061.20485.95072.2671
H51.08552.10442.13702.67493.06563.25713.55434.28204.4600
H62.10441.08552.67492.13703.06563.55433.25714.46004.2820
C72.61863.54881.20484.91063.25713.55436.08981.06237.1374
C83.54882.61864.91061.20483.55433.25716.08987.13741.0623
H93.68094.57022.26715.95074.28204.46001.06237.13748.1888
H104.57023.68095.95072.26714.46004.28207.13741.06238.1888

picture of (E)-Hexa-1,5-diyne-3-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 123.744 C1 C2 H6 119.348
C1 C3 C7 180.000 C2 C1 C3 123.744
C2 C1 H5 119.348 C2 C4 C8 180.000
C3 C1 H5 116.908 C3 C7 H9 179.746
C4 C2 H6 116.908 C4 C8 H10 179.746
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.233      
2 C -0.233      
3 C -0.065      
4 C -0.065      
5 H 0.163      
6 H 0.163      
7 C -0.045      
8 C -0.045      
9 H 0.180      
10 H 0.180      


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 -34.676 0.113 0.000
y 0.113 -24.819 0.000
z 0.000 0.000 -38.153
Traceless
 xyz
x -3.190 0.113 0.000
y 0.113 11.595 0.000
z 0.000 0.000 -8.406
Polar
3z2-r2-16.811
x2-y2-9.857
xy0.113
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.188 -3.028 0.000
y -3.028 21.262 0.000
z 0.000 0.000 4.945


<r2> (average value of r2) Å2
<r2> 217.399
(<r2>)1/2 14.744