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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: B3LYP/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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-36.144433
Energy at 298.15K-36.147181
Nuclear repulsion energy89.972503
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/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 3205 3095 10.13      
2 A1 3170 3061 8.94      
3 A1 2021 1951 0.06      
4 A1 1482 1431 1.09      
5 A1 1325 1280 0.19      
6 A1 1141 1102 0.22      
7 A1 1078 1041 29.88      
8 A1 995 961 7.26      
9 A1 593 573 0.11      
10 A2 967 934 0.00      
11 A2 879 849 0.00      
12 A2 557 538 0.00      
13 A2 358 346 0.00      
14 B1 929 897 0.02      
15 B1 769 742 122.78      
16 B1 380 367 6.79      
17 B2 3200 3090 28.67      
18 B2 3142 3034 2.41      
19 B2 1466 1416 14.60      
20 B2 1408 1360 5.10      
21 B2 1254 1211 0.54      
22 B2 1095 1057 3.52      
23 B2 796 769 26.95      
24 B2 302 292 118.44      

Unscaled Zero Point Vibrational Energy (zpe) 16255.5 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 15697.9 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/CEP-31G*
ABC
0.22671 0.18369 0.10147

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.641 -1.259
C2 0.000 -0.641 -1.259
C3 0.000 1.488 -0.133
C4 0.000 -1.488 -0.133
C5 0.000 0.714 1.075
C6 0.000 -0.714 1.075
H7 0.000 2.580 -0.137
H8 0.000 -2.580 -0.137
H9 0.000 1.244 2.034
H10 0.000 -1.244 2.034

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.28211.40892.40842.33452.69842.24043.41113.34793.7946
C21.28212.40841.40892.69842.33453.41112.24043.79463.3479
C31.40892.40842.97571.43392.51121.09244.06812.18063.4873
C42.40841.40892.97572.51121.43394.06811.09243.48732.1806
C52.33452.69841.43392.51121.42832.22483.51001.09652.1810
C62.69842.33452.51121.43391.42833.51002.22482.18101.0965
H72.24043.41111.09244.06812.22483.51005.16052.54914.3979
H83.41112.24044.06811.09243.51002.22485.16054.39792.5491
H93.34793.79462.18063.48731.09652.18102.54914.39792.4888
H103.79463.34793.48732.18062.18101.09654.39792.54912.4888

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.943 C1 C3 C5 110.403
C1 C3 H7 126.731 C2 C1 C3 126.943
C2 C4 C6 110.403 C2 C4 H8 126.731
C3 C5 C6 122.654 C3 C5 H9 118.423
C4 C6 C5 122.654 C4 C6 H10 118.423
C5 C3 H7 122.866 C5 C6 H10 118.922
C6 C4 H8 122.866 C6 C5 H9 118.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.007      
2 C -0.007      
3 C -0.325      
4 C -0.325      
5 C -0.256      
6 C -0.256      
7 H 0.310      
8 H 0.310      
9 H 0.278      
10 H 0.278      


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 2.023 2.023
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.723 0.000 0.000
y 0.000 -28.223 0.000
z 0.000 0.000 -34.485
Traceless
 xyz
x -6.368 0.000 0.000
y 0.000 7.880 0.000
z 0.000 0.000 -1.512
Polar
3z2-r2-3.024
x2-y2-9.499
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.736 0.000 0.000
y 0.000 11.774 0.000
z 0.000 0.000 9.768


<r2> (average value of r2) Å2
<r2> 92.768
(<r2>)1/2 9.632