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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-230.256602
Energy at 298.15K-230.259539
Nuclear repulsion energy186.760824
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 QCISD/6-311G*
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 3220 3082 5.69      
2 A1 3191 3055 8.83      
3 A1 1957 1874 3.43      
4 A1 1493 1430 0.37      
5 A1 1318 1262 0.88      
6 A1 1171 1121 0.00      
7 A1 1051 1006 22.80      
8 A1 1010 967 5.24      
9 A1 617 591 0.09      
10 A2 889 851 0.00      
11 A2 842 806 0.00      
12 A2 524 501 0.00      
13 A2 408 391 0.00      
14 B1 887 850 0.22      
15 B1 743 711 91.20      
16 B1 385 369 6.83      
17 B2 3216 3079 29.51      
18 B2 3175 3039 2.25      
19 B2 1523 1459 11.17      
20 B2 1435 1374 7.04      
21 B2 1271 1216 0.01      
22 B2 1127 1079 1.20      
23 B2 849 813 26.90      
24 B2 431 413 86.54      

Unscaled Zero Point Vibrational Energy (zpe) 16366.2 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 15669.0 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 QCISD/6-311G*
ABC
0.23211 0.18905 0.10419

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.628 -1.245
C2 0.000 -0.628 -1.245
C3 0.000 1.465 -0.128
C4 0.000 -1.465 -0.128
C5 0.000 0.709 1.060
C6 0.000 -0.709 1.060
H7 0.000 2.551 -0.133
H8 0.000 -2.551 -0.133
H9 0.000 1.231 2.016
H10 0.000 -1.231 2.016

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.25561.39592.37212.30682.66472.22193.36793.31673.7539
C21.25562.37211.39592.66472.30683.36792.22193.75393.3167
C31.39592.37212.92941.40832.47691.08624.01562.15693.4445
C42.37211.39592.92942.47691.40834.01561.08623.44452.1569
C52.30682.66471.40832.47691.41732.19463.47081.08942.1625
C62.66472.30682.47691.40831.41733.47082.19462.16251.0894
H72.22193.36791.08624.01562.19463.47085.10182.52164.3496
H83.36792.22194.01561.08623.47082.19465.10184.34962.5216
H93.31673.75392.15693.44451.08942.16252.52164.34962.4620
H103.75393.31673.44452.15692.16251.08944.34962.52162.4620

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.836 C1 C3 C5 110.694
C1 C3 H7 126.606 C2 C1 C3 126.836
C2 C4 C6 110.694 C2 C4 H8 126.606
C3 C5 C6 122.470 C3 C5 H9 118.878
C4 C6 C5 122.470 C4 C6 H10 118.878
C5 C3 H7 122.700 C5 C6 H10 118.652
C6 C4 H8 122.700 C6 C5 H9 118.652
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability