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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: M06-2X/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at M06-2X/6-31G*
 hartrees
Energy at 0K-308.222515
Energy at 298.15K-308.228131
HF Energy-308.222515
Nuclear repulsion energy312.846023
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 M06-2X/6-31G*
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 3275 3101 7.78      
2 A1 3233 3061 8.35      
3 A1 3219 3048 11.22      
4 A1 1754 1661 2.78      
5 A1 1632 1545 0.44      
6 A1 1537 1456 2.94      
7 A1 1465 1387 11.90      
8 A1 1198 1135 0.03      
9 A1 1124 1064 0.15      
10 A1 1077 1020 0.31      
11 A1 993 940 3.65      
12 A1 834 790 0.51      
13 A1 550 521 0.11      
14 A2 985 933 0.00      
15 A2 929 880 0.00      
16 A2 894 846 0.00      
17 A2 784 742 0.00      
18 A2 584 553 0.00      
19 A2 290 275 0.00      
20 B1 930 881 8.51      
21 B1 759 719 92.84      
22 B1 718 680 8.84      
23 B1 360 341 1.84      
24 B1 233 220 11.20      
25 B2 3244 3072 0.28      
26 B2 3227 3056 21.15      
27 B2 3206 3036 0.14      
28 B2 1707 1617 0.59      
29 B2 1482 1403 4.19      
30 B2 1318 1248 4.21      
31 B2 1264 1197 12.16      
32 B2 1110 1051 1.34      
33 B2 1056 1000 1.27      
34 B2 878 831 0.48      
35 B2 653 619 0.64      
36 B2 422 400 3.70      

Unscaled Zero Point Vibrational Energy (zpe) 24460.3 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 23163.9 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 M06-2X/6-31G*
ABC
0.16174 0.07343 0.05050

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.439 -0.618
C2 0.000 0.683 -1.844
C3 0.000 -0.683 -1.844
C4 0.000 -1.439 -0.618
C5 0.000 -0.671 2.041
C6 0.000 0.671 2.041
C7 0.000 0.715 0.525
C8 0.000 -0.715 0.525
H9 0.000 2.525 -0.645
H10 0.000 1.222 -2.786
H11 0.000 -1.222 -2.786
H12 0.000 -2.525 -0.645
H13 0.000 -1.440 2.803
H14 0.000 1.440 2.803

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.44052.45152.87883.39432.76711.35282.43881.08552.17943.43293.96404.47173.4209
C21.44051.36682.45154.11393.88452.36902.75082.19671.08532.12553.42445.10944.7083
C32.45151.36681.44053.88454.11392.75082.36903.42442.12551.08532.19674.70835.1094
C42.87882.45151.44052.76713.39432.43881.35283.96403.43292.17941.08553.42094.4717
C53.39434.11393.88452.76711.34242.05421.51644.17485.18484.85823.26351.08312.2451
C62.76713.88454.11393.39431.34241.51642.05423.26354.85825.18484.17482.24511.0831
C71.35282.36902.75082.43882.05421.51641.43042.15493.34963.83613.44473.13642.3909
C82.43882.75082.36901.35281.51642.05421.43043.44473.83613.34962.15492.39093.1364
H91.08552.19673.42443.96404.17483.26352.15493.44472.50584.31485.04905.25503.6152
H102.17941.08532.12553.43295.18484.85823.34963.83612.50582.44374.31486.19105.5937
H113.43292.12551.08532.17944.85825.18483.83613.34964.31482.44372.50585.59376.1910
H123.96403.42442.19671.08553.26354.17483.44472.15495.04904.31482.50583.61525.2550
H134.47175.10944.70833.42091.08312.24513.13642.39095.25506.19105.59373.61522.8808
H143.42094.70835.10944.47172.24511.08312.39093.13643.61525.59376.19105.25502.8808

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.656 C1 C2 H10 118.600
C1 C7 C6 149.294 C1 C7 N8 122.368
C2 C1 C7 115.976 C2 C1 H9 120.182
C2 C3 C4 121.656 C2 C3 H11 119.744
C3 C2 H10 119.744 C3 C4 N8 115.976
C3 C4 H12 120.182 C4 C3 H11 118.600
C4 N8 C5 149.294 C4 N8 C7 122.368
C5 C6 C7 91.662 C5 C6 H14 135.248
C5 N8 C7 88.338 C6 C5 N8 91.662
C6 C5 H13 135.248 C6 C7 N8 88.338
C7 C1 H9 123.842 C7 C6 H14 133.090
N8 C4 H12 123.842 N8 C5 H13 133.090
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.249      
2 C -0.170      
3 C -0.170      
4 C -0.249      
5 C -0.173      
6 C -0.173      
7 C 0.085      
8 C 0.085      
9 H 0.167      
10 H 0.158      
11 H 0.158      
12 H 0.167      
13 H 0.181      
14 H 0.181      


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 0.691 0.691
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.989 0.000 0.000
y 0.000 -40.363 0.000
z 0.000 0.000 -39.609
Traceless
 xyz
x -10.003 0.000 0.000
y 0.000 4.436 0.000
z 0.000 0.000 5.567
Polar
3z2-r211.133
x2-y2-9.626
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.021 0.000 0.000
y 0.000 12.865 0.000
z 0.000 0.000 15.282


<r2> (average value of r2) Å2
<r2> 219.802
(<r2>)1/2 14.826