Or, really, one of the many other organometallic catalysts that can get this done.
From what I've seen, there is no clear answer yet. Perhaps something to do with d-block electron activity but the exact inner workings are a mystery to me. Has there been any recent-ish research regarding the topic?
When looking up organotin compounds as a crosslinking catalyst, it was explicitly mentioned that there were a few different "camps" regarding the mechanism - the presence of the metal itself (or rather, those specific d block electrons) as the catalyst, the hydrolysis product of the organometallic product as the catalyst, or another type of intermediate. Is this also the case with platinum/addition reaction silicone crosslinking?
I understand we've experimentally proven out that certain organometallics get you from start to finish but it looks like the intermediates or other details are missing.
I've been removed from academia for quite some time and have been working in industry so I'm not up to date on anything current. :)