What does the charge distribution around a Stone-Wales defect look like?
FWIW, here are some Hückel calculations on the 5775 PAH.

I'm showing the first 7 energy levels. Each molecular graph presents the contribution of each atom to the electron density ($\mathrm{Abs}[c_i]^2$). This is not normalized. I do not use wavefunctions, only the coefficients multiplying them, assuming

$$\Psi_{\mathrm{mol}} = \sum_i^n c_i\psi_i$$

In this approximation (HMO), the first 7 energy levels will be occupied (14 pi electrons).

I will first give you pictures of each energy level, and then a linear combination of each. Take it for what it is, as there is much information lost in the process.

To me, this simply suggests that indeed, the system will behave as if composed of tropylium and cyclopentadienyl ions. But this is not publication quality calculation either =)





Here are compared the linear combination of the first 7 energy levels of the 5775 and 6666 systems. It is clear that electron distribution is not the same in both PAHs, which hints that my calculations are not so far fetched.

5775





6666