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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: LSDA/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 LSDA/3-21G*
 hartrees
Energy at 0K-228.304371
Energy at 298.15K-228.307560
Nuclear repulsion energy187.485606
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 LSDA/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 3159 3102 0.87      
2 A1 3135 3079 0.18      
3 A1 2001 1965 0.57      
4 A1 1468 1441 0.04      
5 A1 1304 1281 4.12      
6 A1 1173 1152 0.56      
7 A1 1091 1072 19.15      
8 A1 995 977 8.16      
9 A1 638 626 0.04      
10 A2 960 943 0.00      
11 A2 852 836 0.00      
12 A2 644 633 0.00      
13 A2 482 473 0.00      
14 B1 909 892 0.22      
15 B1 728 715 101.40      
16 B1 391 384 6.83      
17 B2 3154 3097 10.46      
18 B2 3120 3064 0.00      
19 B2 1439 1414 6.19      
20 B2 1421 1396 16.81      
21 B2 1261 1239 0.02      
22 B2 1101 1081 1.88      
23 B2 872 856 31.55      
24 B2 539 529 66.75      

Unscaled Zero Point Vibrational Energy (zpe) 16418.2 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 16122.7 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 LSDA/3-21G*
ABC
0.23416 0.19069 0.10510

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.628 -1.236
C2 0.000 -0.628 -1.236
C3 0.000 1.458 -0.136
C4 0.000 -1.458 -0.136
C5 0.000 0.700 1.058
C6 0.000 -0.700 1.058
H7 0.000 2.550 -0.131
H8 0.000 -2.550 -0.131
H9 0.000 1.233 2.014
H10 0.000 -1.233 2.014

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.25581.37852.35842.29502.65042.21713.36453.30623.7453
C21.25582.35841.37852.65042.29503.36452.21713.74533.3062
C31.37852.35842.91601.41382.46581.09184.00782.16163.4443
C42.35841.37852.91602.46581.41384.00781.09183.44432.1616
C52.29502.65041.41382.46581.39962.19883.46011.09512.1565
C62.65042.29502.46581.41381.39963.46012.19882.15651.0951
H72.21713.36451.09184.00782.19883.46015.09962.51694.3486
H83.36452.21714.00781.09183.46012.19885.09964.34862.5169
H93.30623.74532.16163.44431.09512.15652.51694.34862.4659
H103.74533.30623.44432.16162.15651.09514.34862.51692.4659

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.027 C1 C3 C5 110.544
C1 C3 H7 127.283 C2 C1 C3 127.027
C2 C4 C6 110.544 C2 C4 H8 127.283
C3 C5 C6 122.430 C3 C5 H9 118.436
C4 C6 C5 122.430 C4 C6 H10 118.436
C5 C3 H7 122.174 C5 C6 H10 119.134
C6 C4 H8 122.174 C6 C5 H9 119.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 C 0.023      
3 C -0.270      
4 C -0.270      
5 C -0.198      
6 C -0.198      
7 H 0.222      
8 H 0.222      
9 H 0.223      
10 H 0.223      


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 1.759 1.759
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.041 0.000 0.000
y 0.000 -28.662 0.000
z 0.000 0.000 -33.587
Traceless
 xyz
x -6.917 0.000 0.000
y 0.000 7.152 0.000
z 0.000 0.000 -0.235
Polar
3z2-r2-0.470
x2-y2-9.379
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.229 0.000 0.000
y 0.000 10.586 0.000
z 0.000 0.000 8.428


<r2> (average value of r2) Å2
<r2> 113.171
(<r2>)1/2 10.638