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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-230.319898
Energy at 298.15K-230.323147
Nuclear repulsion energy187.270120
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 MP2/6-31G(2df,p)
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 3263 3082 4.16      
2 A1 3237 3057 1.41      
3 A1 1951 1843 2.71      
4 A1 1498 1415 0.35      
5 A1 1377 1300 1.40      
6 A1 1172 1107 0.90      
7 A1 1070 1011 17.45      
8 A1 1005 949 3.43      
9 A1 607 573 0.16      
10 A2 956 903 0.00      
11 A2 882 833 0.00      
12 A2 665 629 0.00      
13 A2 487 460 0.00      
14 B1 912 862 0.17      
15 B1 761 719 61.69      
16 B1 395 373 4.00      
17 B2 3260 3079 10.09      
18 B2 3222 3043 0.19      
19 B2 1480 1398 1.55      
20 B2 1413 1335 12.43      
21 B2 1269 1198 0.03      
22 B2 1120 1058 0.61      
23 B2 863 815 11.24      
24 B2 567 536 12.56      

Unscaled Zero Point Vibrational Energy (zpe) 16716.4 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 15788.7 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 MP2/6-31G(2df,p)
ABC
0.23506 0.18898 0.10476

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.632 -1.237
C2 0.000 -0.632 -1.237
C3 0.000 1.466 -0.130
C4 0.000 -1.466 -0.130
C5 0.000 0.704 1.053
C6 0.000 -0.704 1.053
H7 0.000 2.549 -0.125
H8 0.000 -2.549 -0.125
H9 0.000 1.223 2.006
H10 0.000 -1.223 2.006

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.26411.38672.37282.29142.65172.21583.36953.29703.7367
C21.26412.37281.38672.65172.29143.36952.21583.73673.2970
C31.38672.37282.93261.40682.47191.08234.01492.14973.4346
C42.37281.38672.93262.47191.40684.01491.08233.43462.1497
C52.29142.65171.40682.47191.40872.18843.45971.08542.1505
C62.65172.29142.47191.40681.40873.45972.18842.15051.0854
H72.21583.36951.08234.01492.18843.45975.09712.50984.3325
H83.36952.21584.01491.08233.45972.18845.09714.33252.5098
H93.29703.73672.14973.43461.08542.15052.50984.33252.4467
H103.73673.29703.43462.14972.15051.08544.33252.50982.4467

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.986 C1 C3 C5 110.220
C1 C3 H7 127.221 C2 C1 C3 126.986
C2 C4 C6 110.220 C2 C4 H8 127.221
C3 C5 C6 122.794 C3 C5 H9 118.640
C4 C6 C5 122.794 C4 C6 H10 118.640
C5 C3 H7 122.559 C5 C6 H10 118.566
C6 C4 H8 122.559 C6 C5 H9 118.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability