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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-229.883113
Energy at 298.15K-229.886196
Nuclear repulsion energy184.732877
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
4/u)
Dep P Dep U
1 A1 3191 3075 5.18      
2 A1 3161 3046 9.79      
3 A1 1900 1831 7.44      
4 A1 1486 1432 0.79      
5 A1 1307 1259 0.75      
6 A1 1192 1148 0.14      
7 A1 1043 1005 18.86      
8 A1 1000 963 1.34      
9 A1 630 607 0.01      
10 A2 882 850 0.00      
11 A2 839 808 0.00      
12 A2 551 531 0.00      
13 A2 447 430 0.00      
14 B1 879 847 0.48      
15 B1 733 706 79.01      
16 B1 388 374 5.66      
17 B2 3187 3071 38.73      
18 B2 3143 3029 2.02      
19 B2 1509 1454 7.83      
20 B2 1438 1386 6.29      
21 B2 1273 1226 0.45      
22 B2 1129 1088 0.29      
23 B2 894 861 26.62      
24 B2 545 525 46.11      

Unscaled Zero Point Vibrational Energy (zpe) 16371.1 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 15775.2 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
0.22563 0.18586 0.10191

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 0.638 -1.265
C2 0.000 -0.638 -1.265
C3 0.000 1.475 -0.128
C4 0.000 -1.475 -0.128
C5 0.000 0.716 1.075
C6 0.000 -0.716 1.075
H7 0.000 2.566 -0.133
H8 0.000 -2.566 -0.133
H9 0.000 1.243 2.034
H10 0.000 -1.243 2.034

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.27651.41172.39992.34122.70352.23573.39853.35373.7973
C21.27652.39991.41172.70352.34123.39852.23573.79733.3537
C31.41172.39992.95071.42282.49991.09084.04152.17453.4730
C42.39991.41172.95072.49991.42284.04151.09083.47302.1745
C52.34122.70351.42282.49991.43182.20963.49731.09402.1806
C62.70352.34122.49991.42281.43183.49732.20962.18061.0940
H72.23573.39851.09084.04152.20963.49735.13232.53904.3819
H83.39852.23574.04151.09083.49732.20965.13234.38192.5390
H93.35373.79732.17453.47301.09402.18062.53904.38192.4852
H103.79733.35373.47302.17452.18061.09404.38192.53902.4852

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.368 C1 C3 C5 111.372
C1 C3 H7 126.119 C2 C1 C3 126.368
C2 C4 C6 111.372 C2 C4 H8 126.119
C3 C5 C6 122.260 C3 C5 H9 118.958
C4 C6 C5 122.260 C4 C6 H10 118.958
C5 C3 H7 122.509 C5 C6 H10 118.782
C6 C4 H8 122.509 C6 C5 H9 118.782
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability