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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-230.034914
Energy at 298.15K-230.038066
Nuclear repulsion energy188.492594
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 CISD/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 3344 3096 5.00      
2 A1 3312 3066 8.22      
3 A1 2129 1971 0.72      
4 A1 1569 1452 0.12      
5 A1 1381 1279 0.42      
6 A1 1226 1135 0.02      
7 A1 1105 1023 26.12      
8 A1 1059 981 4.64      
9 A1 647 599 0.40      
10 A2 991 917 0.00      
11 A2 918 850 0.00      
12 A2 586 543 0.00      
13 A2 441 408 0.00      
14 B1 971 899 0.10      
15 B1 798 738 75.55      
16 B1 408 378 5.34      
17 B2 3340 3092 29.47      
18 B2 3296 3051 2.41      
19 B2 1602 1483 13.37      
20 B2 1507 1396 7.28      
21 B2 1337 1238 0.01      
22 B2 1182 1094 1.07      
23 B2 881 815 27.50      
24 B2 428 396 105.53      

Unscaled Zero Point Vibrational Energy (zpe) 17228.3 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 15950.0 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 CISD/6-31G*
ABC
0.23738 0.19191 0.10612

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.619 -1.230
C2 0.000 -0.619 -1.230
C3 0.000 1.455 -0.129
C4 0.000 -1.455 -0.129
C5 0.000 0.704 1.048
C6 0.000 -0.704 1.048
H7 0.000 2.534 -0.133
H8 0.000 -2.534 -0.133
H9 0.000 1.221 1.998
H10 0.000 -1.221 1.998

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.23781.38302.34842.28042.63482.20703.33813.28433.7160
C21.23782.34841.38302.63482.28043.33812.20703.71603.2843
C31.38302.34842.91041.39682.45901.07853.98892.14003.4184
C42.34841.38302.91042.45901.39683.98891.07853.41842.1400
C52.28042.63481.39682.45901.40722.17833.44621.08152.1460
C62.63482.28042.45901.39681.40723.44622.17832.14601.0815
H72.20703.33811.07853.98892.17833.44625.06742.50334.3172
H83.33812.20703.98891.07853.44622.17835.06744.31722.5033
H93.28433.71602.14003.41841.08152.14602.50334.31722.4415
H103.71603.28433.41842.14002.14601.08154.31722.50332.4415

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.207 C1 C3 C5 110.241
C1 C3 H7 126.986 C2 C1 C3 127.207
C2 C4 C6 110.241 C2 C4 H8 126.986
C3 C5 C6 122.553 C3 C5 H9 118.883
C4 C6 C5 122.553 C4 C6 H10 118.883
C5 C3 H7 122.774 C5 C6 H10 118.565
C6 C4 H8 122.774 C6 C5 H9 118.565
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability