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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-229.577296
Energy at 298.15K-229.580584
Nuclear repulsion energy187.531602
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 mPW1PW91/3-21G*
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 3265 3101 1.80      
2 A1 3235 3072 0.87      
3 A1 2047 1943 0.84      
4 A1 1504 1429 0.33      
5 A1 1318 1251 3.66      
6 A1 1210 1149 0.01      
7 A1 1091 1036 20.10      
8 A1 1009 958 7.29      
9 A1 655 622 0.13      
10 A2 1014 963 0.00      
11 A2 897 852 0.00      
12 A2 656 623 0.00      
13 A2 489 464 0.00      
14 B1 961 913 0.15      
15 B1 768 729 104.63      
16 B1 405 384 6.99      
17 B2 3261 3097 17.61      
18 B2 3218 3056 0.55      
19 B2 1484 1410 20.96      
20 B2 1452 1379 2.29      
21 B2 1300 1235 0.07      
22 B2 1130 1073 1.14      
23 B2 894 849 33.29      
24 B2 526 499 79.03      

Unscaled Zero Point Vibrational Energy (zpe) 16894.0 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 16042.5 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 mPW1PW91/3-21G*
ABC
0.23381 0.19072 0.10504

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.625 -1.237
C2 0.000 -0.625 -1.237
C3 0.000 1.460 -0.134
C4 0.000 -1.460 -0.134
C5 0.000 0.703 1.060
C6 0.000 -0.703 1.060
H7 0.000 2.540 -0.136
H8 0.000 -2.540 -0.136
H9 0.000 1.228 2.008
H10 0.000 -1.228 2.008

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.24921.38362.35822.29822.65282.20923.35063.30093.7369
C21.24922.35821.38362.65282.29823.35062.20923.73693.3009
C31.38362.35822.91911.41332.46991.08043.99952.15453.4369
C42.35821.38362.91912.46991.41333.99951.08043.43692.1545
C52.29822.65281.41332.46991.40542.19223.45621.08432.1512
C62.65282.29822.46991.41331.40543.45622.19222.15121.0843
H72.20923.35061.08043.99952.19223.45625.07992.51384.3356
H83.35062.20923.99951.08043.45622.19225.07994.33562.5138
H93.30093.73692.15453.43691.08432.15122.51384.33562.4563
H103.73693.30093.43692.15452.15121.08434.33562.51382.4563

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.120 C1 C3 C5 110.502
C1 C3 H7 126.994 C2 C1 C3 127.120
C2 C4 C6 110.502 C2 C4 H8 126.994
C3 C5 C6 122.378 C3 C5 H9 118.636
C4 C6 C5 122.378 C4 C6 H10 118.636
C5 C3 H7 122.504 C5 C6 H10 118.986
C6 C4 H8 122.504 C6 C5 H9 118.986
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.012      
2 C 0.012      
3 C -0.277      
4 C -0.277      
5 C -0.211      
6 C -0.211      
7 H 0.239      
8 H 0.239      
9 H 0.237      
10 H 0.237      


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 1.800 1.800
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.302 0.000 0.000
y 0.000 -28.592 0.000
z 0.000 0.000 -33.889
Traceless
 xyz
x -7.061 0.000 0.000
y 0.000 7.504 0.000
z 0.000 0.000 -0.443
Polar
3z2-r2-0.885
x2-y2-9.710
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.177 0.000 0.000
y 0.000 10.493 0.000
z 0.000 0.000 8.247


<r2> (average value of r2) Å2
<r2> 113.233
(<r2>)1/2 10.641