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 ((Z)-Hexa-1,5-diyne-3-ene)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-230.822323
Energy at 298.15K-230.823452
Nuclear repulsion energy166.536449
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 B1B95/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3478 3334 53.87      
2 A1 3189 3057 11.53      
3 A1 2207 2115 3.02      
4 A1 1661 1592 3.58      
5 A1 1244 1193 0.15      
6 A1 904 867 3.76      
7 A1 645 618 26.71      
8 A1 442 424 5.55      
9 A1 102 98 0.20      
10 A2 963 923 0.00      
11 A2 617 592 0.00      
12 A2 561 538 0.00      
13 A2 219 210 0.00      
14 B1 769 737 23.63      
15 B1 613 588 96.92      
16 B1 345 330 18.13      
17 B2 3478 3334 56.50      
18 B2 3172 3040 0.57      
19 B2 2225 2133 0.05      
20 B2 1422 1363 1.56      
21 B2 1046 1003 13.69      
22 B2 739 709 5.65      
23 B2 641 615 56.74      
24 B2 247 237 5.21      

Unscaled Zero Point Vibrational Energy (zpe) 15464.3 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 14824.1 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 B1B95/6-311G*
ABC
0.24341 0.08397 0.06243

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.673 1.081
C2 0.000 -0.673 1.081
C3 0.000 1.485 -0.073
C4 0.000 -1.485 -0.073
H5 0.000 1.189 2.036
H6 0.000 -1.189 2.036
C7 0.000 2.215 -1.032
C8 0.000 -2.215 -1.032
H9 0.000 2.843 -1.890
H10 0.000 -2.843 -1.890

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 C7 C8 H9 H10
C11.34631.41142.44781.08552.09262.61543.57843.67894.6032
C21.34632.44781.41142.09261.08553.57842.61544.60323.6789
C31.41142.44782.97092.13033.40601.20443.82282.26784.6943
C42.44781.41142.97093.40602.13033.82281.20444.69432.2678
H51.08552.09262.13033.40602.37733.23484.58224.26035.6275
H62.09261.08553.40602.13032.37734.58223.23485.62754.2603
C72.61543.57841.20443.82283.23484.58224.43061.06355.1308
C83.57842.61543.82281.20444.58223.23484.43065.13081.0635
H93.67894.60322.26784.69434.26035.62751.06355.13085.6863
H104.60323.67894.69432.26785.62754.26035.13081.06355.6863

picture of (Z)-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 125.137 C1 C2 H6 118.353
C1 C3 C7 177.838 C2 C1 C3 125.137
C2 C1 H5 118.353 C2 C4 C8 177.838
C3 C1 H5 116.510 C3 C7 H9 178.885
C4 C2 H6 116.510 C4 C8 H10 178.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.290      
2 C -0.290      
3 C 0.073      
4 C 0.073      
5 H 0.234      
6 H 0.234      
7 C -0.275      
8 C -0.275      
9 H 0.259      
10 H 0.259      


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 0.103 0.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.695 0.000 0.000
y 0.000 -30.207 0.000
z 0.000 0.000 -26.460
Traceless
 xyz
x -9.362 0.000 0.000
y 0.000 1.871 0.000
z 0.000 0.000 7.491
Polar
3z2-r214.982
x2-y2-7.489
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.870 0.000 0.000
y 0.000 14.070 0.000
z 0.000 0.000 9.996


<r2> (average value of r2) Å2
<r2> 171.372
(<r2>)1/2 13.091