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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: HF/3-21G*

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/3-21G*
 hartrees
Energy at 0K-228.106225
Energy at 298.15K-228.109769
Nuclear repulsion energy188.938789
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/3-21G*
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 3414 3081 2.63      
2 A1 3374 3046 4.73      
3 A1 2210 1995 1.55      
4 A1 1603 1447 1.73      
5 A1 1390 1254 1.71      
6 A1 1259 1137 0.68      
7 A1 1082 977 17.58      
8 A1 1058 955 14.82      
9 A1 706 638 0.47      
10 A2 1157 1044 0.00      
11 A2 1003 905 0.00      
12 A2 706 637 0.00      
13 A2 530 478 0.00      
14 B1 1098 991 0.12      
15 B1 858 774 108.18      
16 B1 448 404 8.35      
17 B2 3410 3078 20.86      
18 B2 3357 3030 2.75      
19 B2 1615 1458 28.86      
20 B2 1542 1392 0.97      
21 B2 1362 1230 0.43      
22 B2 1206 1088 0.44      
23 B2 955 862 42.78      
24 B2 514 464 137.19      

Unscaled Zero Point Vibrational Energy (zpe) 17927.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 16181.4 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/3-21G*
ABC
0.23755 0.19315 0.10653

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.613 -1.229
C2 0.000 -0.613 -1.229
C3 0.000 1.452 -0.129
C4 0.000 -1.452 -0.129
C5 0.000 0.704 1.050
C6 0.000 -0.704 1.050
H7 0.000 2.520 -0.138
H8 0.000 -2.520 -0.138
H9 0.000 1.218 1.991
H10 0.000 -1.218 1.991

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.22501.38342.33902.28082.63202.19773.31723.27673.7042
C21.22502.33901.38342.63202.28083.31722.19773.70423.2767
C31.38342.33902.90351.39622.45731.06823.97172.13333.4094
C42.33901.38342.90352.45731.39623.97171.06823.40942.1333
C52.28082.63201.39622.45731.40832.16953.43571.07242.1403
C62.63202.28082.45731.39621.40833.43572.16952.14031.0724
H72.19773.31721.06823.97172.16953.43575.03982.49514.3016
H83.31722.19773.97171.06823.43572.16955.03984.30162.4951
H93.27673.70422.13333.40941.07242.14032.49514.30162.4361
H103.70423.27673.40942.13332.14031.07244.30162.49512.4361

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.347 C1 C3 C5 110.277
C1 C3 H7 126.909 C2 C1 C3 127.347
C2 C4 C6 110.277 C2 C4 H8 126.909
C3 C5 C6 122.376 C3 C5 H9 118.990
C4 C6 C5 122.376 C4 C6 H10 118.990
C5 C3 H7 122.813 C5 C6 H10 118.634
C6 C4 H8 122.813 C6 C5 H9 118.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.012      
2 C -0.012      
3 C -0.268      
4 C -0.268      
5 C -0.230      
6 C -0.230      
7 H 0.260      
8 H 0.260      
9 H 0.250      
10 H 0.250      


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 1.886 1.886
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.090 0.000 0.000
y 0.000 -29.050 0.000
z 0.000 0.000 -35.146
Traceless
 xyz
x -6.992 0.000 0.000
y 0.000 8.068 0.000
z 0.000 0.000 -1.076
Polar
3z2-r2-2.151
x2-y2-10.040
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.025 0.000 0.000
y 0.000 10.482 0.000
z 0.000 0.000 7.858


<r2> (average value of r2) Å2
<r2> 112.437
(<r2>)1/2 10.604