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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-230.185140
Energy at 298.15K-230.188112
Nuclear repulsion energy186.922491
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/6-31G*
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 3237 3083 4.69      
2 A1 3209 3056 8.55      
3 A1 1980 1885 3.64      
4 A1 1516 1443 0.29      
5 A1 1340 1276 0.44      
6 A1 1192 1135 0.06      
7 A1 1073 1022 21.77      
8 A1 1025 976 2.78      
9 A1 622 592 0.11      
10 A2 911 868 0.00      
11 A2 860 819 0.00      
12 A2 539 513 0.00      
13 A2 408 389 0.00      
14 B1 902 859 0.22      
15 B1 753 717 71.32      
16 B1 389 370 4.68      
17 B2 3234 3080 32.20      
18 B2 3193 3041 2.08      
19 B2 1547 1473 9.75      
20 B2 1457 1387 7.71      
21 B2 1291 1229 0.03      
22 B2 1144 1089 0.84      
23 B2 859 818 26.71      
24 B2 442 421 84.26      

Unscaled Zero Point Vibrational Energy (zpe) 16560.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 15770.2 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/6-31G*
ABC
0.23232 0.18960 0.10440

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.629 -1.245
C2 0.000 -0.629 -1.245
C3 0.000 1.461 -0.128
C4 0.000 -1.461 -0.128
C5 0.000 0.707 1.059
C6 0.000 -0.707 1.059
H7 0.000 2.548 -0.132
H8 0.000 -2.548 -0.132
H9 0.000 1.230 2.015
H10 0.000 -1.230 2.015

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.25891.39302.37072.30562.66392.21873.36743.31533.7534
C21.25892.37071.39302.66392.30563.36742.21873.75343.3153
C31.39302.37072.92281.40632.47221.08704.00982.15573.4404
C42.37071.39302.92282.47221.40634.00981.08703.44042.1557
C52.30562.66391.40632.47221.41452.19263.46661.08982.1603
C62.66392.30562.47221.40631.41453.46662.19262.16031.0898
H72.21873.36741.08704.00982.19263.46665.09692.51954.3457
H83.36742.21874.00981.08703.46662.19265.09694.34572.5195
H93.31533.75342.15573.44041.08982.16032.51954.34572.4598
H103.75343.31533.44042.15572.16031.08984.34572.51952.4598

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.672 C1 C3 C5 110.898
C1 C3 H7 126.476 C2 C1 C3 126.672
C2 C4 C6 110.898 C2 C4 H8 126.476
C3 C5 C6 122.430 C3 C5 H9 118.911
C4 C6 C5 122.430 C4 C6 H10 118.911
C5 C3 H7 122.625 C5 C6 H10 118.659
C6 C4 H8 122.625 C6 C5 H9 118.659
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability