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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-229.529087
Energy at 298.15K-229.532382
Nuclear repulsion energy187.822869
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 B1B95/3-21G
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 3271 3130 1.86      
2 A1 3241 3101 1.00      
3 A1 2052 1963 0.81      
4 A1 1503 1438 0.26      
5 A1 1315 1258 3.51      
6 A1 1208 1156 0.01      
7 A1 1090 1043 19.42      
8 A1 1008 964 7.45      
9 A1 651 623 0.13      
10 A2 1017 973 0.00      
11 A2 899 860 0.00      
12 A2 658 629 0.00      
13 A2 490 468 0.00      
14 B1 963 921 0.08      
15 B1 770 737 101.31      
16 B1 403 385 6.84      
17 B2 3267 3126 17.95      
18 B2 3224 3085 0.61      
19 B2 1485 1421 19.95      
20 B2 1452 1389 2.58      
21 B2 1298 1242 0.08      
22 B2 1131 1082 1.10      
23 B2 890 852 32.20      
24 B2 522 499 76.19      

Unscaled Zero Point Vibrational Energy (zpe) 16902.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 16171.0 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 B1B95/3-21G
ABC
0.23498 0.19101 0.10536

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.624 -1.234
C2 0.000 -0.624 -1.234
C3 0.000 1.459 -0.134
C4 0.000 -1.459 -0.134
C5 0.000 0.702 1.057
C6 0.000 -0.702 1.057
H7 0.000 2.538 -0.136
H8 0.000 -2.538 -0.136
H9 0.000 1.225 2.005
H10 0.000 -1.225 2.005

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.24711.38172.35542.29222.64672.20703.34683.29423.7293
C21.24712.35541.38172.64672.29223.34682.20703.72933.2942
C31.38172.35542.91811.41092.46711.07893.99702.15123.4318
C42.35541.38172.91812.46711.41093.99701.07893.43182.1512
C52.29222.64671.41092.46711.40372.18953.45241.08282.1475
C62.64672.29222.46711.41091.40373.45242.18952.14751.0828
H72.20703.34681.07893.99702.18953.45245.07592.51124.3293
H83.34682.20703.99701.07893.45242.18955.07594.32932.5112
H93.29423.72932.15123.43181.08282.14752.51124.32932.4501
H103.72933.29423.43182.15122.14751.08284.32932.51122.4501

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.208 C1 C3 C5 110.334
C1 C3 H7 127.087 C2 C1 C3 127.208
C2 C4 C6 110.334 C2 C4 H8 127.087
C3 C5 C6 122.458 C3 C5 H9 118.647
C4 C6 C5 122.458 C4 C6 H10 118.647
C5 C3 H7 122.579 C5 C6 H10 118.896
C6 C4 H8 122.579 C6 C5 H9 118.896
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.012      
2 C 0.012      
3 C -0.266      
4 C -0.266      
5 C -0.206      
6 C -0.206      
7 H 0.231      
8 H 0.231      
9 H 0.229      
10 H 0.229      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.775 1.775
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.160 0.000 0.000
y 0.000 -28.636 0.000
z 0.000 0.000 -33.883
Traceless
 xyz
x -6.900 0.000 0.000
y 0.000 7.385 0.000
z 0.000 0.000 -0.485
Polar
3z2-r2-0.970
x2-y2-9.524
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.170 0.000 0.000
y 0.000 10.474 0.000
z 0.000 0.000 8.219


<r2> (average value of r2) Å2
<r2> 112.934
(<r2>)1/2 10.627