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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: MP2=FULL/STO-3G

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=FULL/STO-3G
 hartrees
Energy at 0K-226.956293
Energy at 298.15K-226.959465
Nuclear repulsion energy183.829133
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=FULL/STO-3G
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 3522 3131 0.81      
2 A1 3506 3117 7.83      
3 A1 1924 1710 22.02      
4 A1 1563 1389 1.35      
5 A1 1417 1260 0.00      
6 A1 1236 1099 0.72      
7 A1 1066 947 2.04      
8 A1 1030 916 1.96      
9 A1 636 565 0.07      
10 A2 1055 938 0.00      
11 A2 943 838 0.00      
12 A2 806 716 0.00      
13 A2 511 454 0.00      
14 B1 1007 895 0.06      
15 B1 791 703 18.75      
16 B1 421 374 1.11      
17 B2 3515 3125 3.65      
18 B2 3500 3111 0.14      
19 B2 1643 1460 0.97      
20 B2 1503 1336 24.81      
21 B2 1322 1175 10.74      
22 B2 1197 1064 2.79      
23 B2 1023 909 1.49      
24 B2 691 614 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 17913.6 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 15923.4 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=FULL/STO-3G
ABC
0.22435 0.18343 0.10092

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.640 -1.275
C2 0.000 -0.640 -1.275
C3 0.000 1.483 -0.119
C4 0.000 -1.483 -0.119
C5 0.000 0.726 1.072
C6 0.000 -0.726 1.072
H7 0.000 2.585 -0.114
H8 0.000 -2.585 -0.114
H9 0.000 1.249 2.042
H10 0.000 -1.249 2.042

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.28101.43042.41782.34802.71542.26463.42823.37203.8170
C21.28102.41781.43042.71542.34803.42822.26463.81703.3720
C31.43042.41782.96601.41062.50951.10244.06842.17333.4830
C42.41781.43042.96602.50951.41064.06841.10243.48302.1733
C52.34802.71541.41062.50951.45242.20553.51771.10202.2004
C62.71542.34802.50951.41061.45243.51772.20552.20041.1020
H72.26463.42821.10244.06842.20553.51775.17082.53724.3991
H83.42822.26464.06841.10243.51772.20555.17084.39912.5372
H93.37203.81702.17333.48301.10202.20042.53724.39912.4976
H103.81703.37203.48302.17332.20041.10204.39912.53722.4976

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.085 C1 C3 C5 111.469
C1 C3 H7 126.299 C2 C1 C3 126.085
C2 C4 C6 111.469 C2 C4 H8 126.299
C3 C5 C6 122.446 C3 C5 H9 119.245
C4 C6 C5 122.446 C4 C6 H10 119.245
C5 C3 H7 122.232 C5 C6 H10 118.309
C6 C4 H8 122.232 C6 C5 H9 118.309
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability