I came across a question that asked the correct structure of trichloroborazine. The two options provided were : a) the chlorine atoms attached to the three N atoms, and b) the chlorine atoms attached to the 3 B atoms
My idea was that, since, in borazine, the N atoms have a formal +1 charge, the Cl would more readily bond to it, making (a) the correct answer. But, turns out, it's actually (b) that's the correct structure. Why is it so, and what is wrong with my reasoning? Edit: If both (and other) structures are at least theoretically possible, then which one is the most stable and/or most common one, and why so?