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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-34.992216
Energy at 298.15K-34.995490
Nuclear repulsion energy90.645300
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 HF/CEP-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 A1 3444 3105 13.95      
2 A1 3401 3065 23.32      
3 A1 2171 1957 1.43      
4 A1 1589 1432 0.10      
5 A1 1406 1267 0.35      
6 A1 1257 1133 0.00      
7 A1 1110 1000 42.45      
8 A1 1062 957 3.47      
9 A1 665 599 0.56      
10 A2 1113 1003 0.00      
11 A2 994 896 0.00      
12 A2 639 576 0.00      
13 A2 451 406 0.00      
14 B1 1073 967 0.12      
15 B1 862 777 126.86      
16 B1 433 391 11.11      
17 B2 3439 3100 43.16      
18 B2 3370 3037 7.45      
19 B2 1619 1459 26.03      
20 B2 1527 1377 3.82      
21 B2 1362 1228 0.00      
22 B2 1202 1084 2.59      
23 B2 898 810 42.94      
24 B2 377 340 171.48      

Unscaled Zero Point Vibrational Energy (zpe) 17732.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 15983.7 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 HF/CEP-31G
ABC
0.23002 0.18578 0.10277

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.630 -1.251
C2 0.000 -0.630 -1.251
C3 0.000 1.482 -0.129
C4 0.000 -1.482 -0.129
C5 0.000 0.716 1.067
C6 0.000 -0.716 1.067
H7 0.000 2.555 -0.138
H8 0.000 -2.555 -0.138
H9 0.000 1.232 2.014
H10 0.000 -1.232 2.014

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.25991.40822.39092.31912.68012.22373.37403.32003.7584
C21.25992.39091.40822.68012.31913.37402.22373.75843.3200
C31.40822.39092.96311.41982.50221.07384.03692.15813.4577
C42.39091.40822.96312.50221.41984.03691.07383.45772.1581
C52.31912.68011.41982.50221.43272.19873.48661.07862.1662
C62.68012.31912.50221.41981.43273.48662.19872.16621.0786
H72.22373.37401.07384.03692.19873.48665.11072.52714.3560
H83.37402.22374.03691.07383.48662.19875.11074.35602.5271
H93.32003.75842.15813.45771.07862.16622.52714.35602.4631
H103.75843.32003.45772.15812.16621.07864.35602.52712.4631

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.210 C1 C3 C5 110.176
C1 C3 H7 126.725 C2 C1 C3 127.210
C2 C4 C6 110.176 C2 C4 H8 126.725
C3 C5 C6 122.614 C3 C5 H9 118.853
C4 C6 C5 122.614 C4 C6 H10 118.853
C5 C3 H7 123.098 C5 C6 H10 118.533
C6 C4 H8 123.098 C6 C5 H9 118.533
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.012      
2 C -0.012      
3 C -0.279      
4 C -0.279      
5 C -0.220      
6 C -0.220      
7 H 0.273      
8 H 0.273      
9 H 0.237      
10 H 0.237      


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 2.346 2.346
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.092 0.000 0.000
y 0.000 -29.159 0.000
z 0.000 0.000 -36.812
Traceless
 xyz
x -6.107 0.000 0.000
y 0.000 8.793 0.000
z 0.000 0.000 -2.686
Polar
3z2-r2-5.373
x2-y2-9.933
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.359 0.000 0.000
y 0.000 11.638 0.000
z 0.000 0.000 9.077


<r2> (average value of r2) Å2
<r2> 92.712
(<r2>)1/2 9.629