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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-230.655140
Energy at 298.15K-230.658182
HF Energy-230.392064
Nuclear repulsion energy187.211044
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 B2PLYP/6-31G*
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 3248 3083 5.17      
2 A1 3223 3059 6.36      
3 A1 1987 1886 1.16      
4 A1 1509 1432 0.19      
5 A1 1353 1284 0.84      
6 A1 1186 1126 0.34      
7 A1 1084 1029 21.52      
8 A1 1015 963 3.33      
9 A1 621 590 0.28      
10 A2 939 891 0.00      
11 A2 866 822 0.00      
12 A2 581 552 0.00      
13 A2 437 415 0.00      
14 B1 906 860 0.23      
15 B1 755 717 64.96      
16 B1 394 374 4.19      
17 B2 3245 3080 34.32      
18 B2 3207 3044 1.32      
19 B2 1502 1426 11.10      
20 B2 1443 1370 5.67      
21 B2 1292 1226 0.00      
22 B2 1129 1071 0.90      
23 B2 852 808 25.69      
24 B2 447 424 83.77      

Unscaled Zero Point Vibrational Energy (zpe) 16610.1 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 15766.3 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 B2PLYP/6-31G*
ABC
0.23350 0.18982 0.10470

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.629 -1.240
C2 0.000 -0.629 -1.240
C3 0.000 1.462 -0.131
C4 0.000 -1.462 -0.131
C5 0.000 0.704 1.058
C6 0.000 -0.704 1.058
H7 0.000 2.546 -0.131
H8 0.000 -2.546 -0.131
H9 0.000 1.228 2.010
H10 0.000 -1.228 2.010

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.25821.38722.36702.29962.65722.21483.36323.30493.7435
C21.25822.36701.38722.65722.29963.36322.21483.74353.3049
C31.38722.36702.92381.40982.47121.08394.00772.15353.4382
C42.36701.38722.92382.47121.40984.00771.08393.43822.1535
C52.29962.65721.40982.47121.40892.19173.46081.08652.1545
C62.65722.29962.47121.40981.40893.46082.19172.15451.0865
H72.21483.36321.08394.00772.19173.46085.09162.51334.3390
H83.36322.21484.00771.08393.46082.19175.09164.33902.5133
H93.30493.74352.15353.43821.08652.15452.51334.33902.4570
H103.74353.30493.43822.15352.15451.08654.33902.51332.4570

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.897 C1 C3 C5 110.605
C1 C3 H7 126.916 C2 C1 C3 126.897
C2 C4 C6 110.605 C2 C4 H8 126.916
C3 C5 C6 122.498 C3 C5 H9 118.665
C4 C6 C5 122.498 C4 C6 H10 118.665
C5 C3 H7 122.479 C5 C6 H10 118.837
C6 C4 H8 122.479 C6 C5 H9 118.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.018      
2 C -0.018      
3 C -0.171      
4 C -0.171      
5 C -0.158      
6 C -0.158      
7 H 0.178      
8 H 0.178      
9 H 0.169      
10 H 0.169      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.970 0.000 0.000
y 0.000 10.866 0.000
z 0.000 0.000 8.851


<r2> (average value of r2) Å2
<r2> 113.364
(<r2>)1/2 10.647