Lewis structures of S2N2 and [S4]2+ This seems so simple, yet I just can't seem to manage. Apparently $\ce{S2N2}$ and $\ce{S4^2+}$ (which are isoelectronic) obey Huckel's rule (at least to some extent) and I was trying to draw the Lewis structures to show that, but I can't manage to draw them without having a diradical, which doesn't seem very likely to exist. And if there are radicals, it doesn't obey Huckel's rule anymore.

Can someone help me draw their Lewis structures that obey Huckel's rule?
Draw each ring with one double bond and the two atoms having no double bond with two electron pairs instead of one.  Verify that the total electron count agrees with two positive charges on $\ce{S4}$ and zero on $\ce{S2N2}$.  The double bond and the extra electron pairs on the two atoms are the six ring electrons in the Huckel rule.