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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: B3LYP/CEP-121G

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-121G
 hartrees
Energy at 0K-36.111032
Energy at 298.15K-36.114158
Nuclear repulsion energy90.271356
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-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3196 3115 7.66      
2 A1 3162 3081 10.55      
3 A1 1958 1908 0.01      
4 A1 1461 1424 0.21      
5 A1 1301 1268 1.66      
6 A1 1169 1140 0.29      
7 A1 1050 1023 28.67      
8 A1 980 955 4.75      
9 A1 621 605 0.48      
10 A2 974 950 0.00      
11 A2 886 864 0.00      
12 A2 590 575 0.00      
13 A2 453 442 0.00      
14 B1 945 921 0.02      
15 B1 771 751 102.41      
16 B1 399 389 6.87      
17 B2 3191 3110 47.45      
18 B2 3141 3061 2.76      
19 B2 1447 1410 15.14      
20 B2 1394 1359 4.81      
21 B2 1263 1230 0.01      
22 B2 1100 1072 1.33      
23 B2 848 826 33.01      
24 B2 447 436 97.30      

Unscaled Zero Point Vibrational Energy (zpe) 16373.9 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 15956.4 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 B3LYP/CEP-121G
ABC
0.22735 0.18525 0.10208

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.634 -1.256
C2 0.000 -0.634 -1.256
C3 0.000 1.482 -0.134
C4 0.000 -1.482 -0.134
C5 0.000 0.713 1.075
C6 0.000 -0.713 1.075
H7 0.000 2.568 -0.139
H8 0.000 -2.568 -0.139
H9 0.000 1.241 2.028
H10 0.000 -1.241 2.028

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.26881.40662.39592.33202.69232.23263.39123.33923.7815
C21.26882.39591.40662.69232.33203.39122.23263.78153.3392
C31.40662.39592.96451.43222.50621.08534.04982.17473.4767
C42.39591.40662.96452.50621.43224.04981.08533.47672.1747
C52.33202.69231.43222.50621.42682.21613.49831.08932.1744
C62.69232.33202.50621.43221.42683.49832.21612.17441.0893
H72.23263.39121.08534.04982.21613.49835.13512.54064.3818
H83.39122.23264.04981.08533.49832.21615.13514.38182.5406
H93.33923.78152.17473.47671.08932.17442.54064.38182.4820
H103.78153.33923.47672.17472.17441.08934.38182.54062.4820

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.067 C1 C3 C5 110.463
C1 C3 H7 126.777 C2 C1 C3 127.067
C2 C4 C6 110.463 C2 C4 H8 126.777
C3 C5 C6 122.469 C3 C5 H9 118.560
C4 C6 C5 122.469 C4 C6 H10 118.560
C5 C3 H7 122.760 C5 C6 H10 118.971
C6 C4 H8 122.760 C6 C5 H9 118.971
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.020      
2 C -0.020      
3 C -0.172      
4 C -0.172      
5 C -0.139      
6 C -0.139      
7 H 0.176      
8 H 0.176      
9 H 0.155      
10 H 0.155      


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 1.999 1.999
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.112 0.000 0.000
y 0.000 -29.380 0.000
z 0.000 0.000 -35.375
Traceless
 xyz
x -5.735 0.000 0.000
y 0.000 7.363 0.000
z 0.000 0.000 -1.629
Polar
3z2-r2-3.258
x2-y2-8.732
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.092 0.000 0.000
y 0.000 12.073 0.000
z 0.000 0.000 9.971


<r2> (average value of r2) Å2
<r2> 92.814
(<r2>)1/2 9.634