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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: QCISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-230.230182
Energy at 298.15K-230.232928
Nuclear repulsion energy186.886911
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/6-31+G**
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 3284 3105 6.15      
2 A1 3255 3077 7.44      
3 A1 1974 1866 1.41      
4 A1 1514 1432 0.10      
5 A1 1343 1269 0.29      
6 A1 1185 1120 0.03      
7 A1 1070 1012 23.69      
8 A1 1020 964 3.29      
9 A1 619 585 0.06      
10 A2 903 854 0.00      
11 A2 855 809 0.00      
12 A2 476 450 0.00      
13 A2 256 242 0.00      
14 B1 903 854 0.31      
15 B1 746 705 92.87      
16 B1 377 356 6.17      
17 B2 3281 3102 26.19      
18 B2 3239 3062 2.08      
19 B2 1541 1457 9.00      
20 B2 1455 1376 4.96      
21 B2 1292 1221 0.00      
22 B2 1139 1077 1.19      
23 B2 852 805 28.45      
24 B2 432 408 91.07      

Unscaled Zero Point Vibrational Energy (zpe) 16505.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 15604.0 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/6-31+G**
ABC
0.23210 0.18943 0.10430

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.630 -1.246
C2 0.000 -0.630 -1.246
C3 0.000 1.463 -0.128
C4 0.000 -1.463 -0.128
C5 0.000 0.708 1.060
C6 0.000 -0.708 1.060
H7 0.000 2.544 -0.132
H8 0.000 -2.544 -0.132
H9 0.000 1.228 2.011
H10 0.000 -1.228 2.011

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.26011.39412.37282.30752.66612.21433.36353.31143.7496
C21.26012.37281.39412.66612.30753.36352.21433.74963.3114
C31.39412.37282.92581.40792.47461.08074.00652.15193.4374
C42.37281.39412.92582.47461.40794.00651.08073.43742.1519
C52.30752.66611.40792.47461.41552.18893.46291.08372.1565
C62.66612.30752.47461.40791.41553.46292.18892.15651.0837
H72.21433.36351.08074.00652.18893.46295.08712.51454.3376
H83.36352.21434.00651.08073.46292.18895.08714.33762.5145
H93.31143.74962.15193.43741.08372.15652.51454.33762.4557
H103.74963.31143.43742.15192.15651.08374.33762.51452.4557

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.686 C1 C3 C5 110.876
C1 C3 H7 126.485 C2 C1 C3 126.686
C2 C4 C6 110.876 C2 C4 H8 126.485
C3 C5 C6 122.438 C3 C5 H9 118.883
C4 C6 C5 122.438 C4 C6 H10 118.883
C5 C3 H7 122.639 C5 C6 H10 118.679
C6 C4 H8 122.639 C6 C5 H9 118.679
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability