Hmm, OK, well over 200 views later and no answer Having anguished over the lack of interest, I have concluded that there are 3 possible explanations:
The answer is a trivially easy 'yes'. "Why's this guy wasting our time asking about SinMonNn? It's a perfectly common compound! In fact, it's a major constituent of egg cartons! I'm certainly not going to waste my time answering such a simplistic question!"
The answer is a trivially easy 'no'. "Why's this guy wasting our time asking about SinMonNn? It's perfectly obvious to anyone with an ounce of chemical knowledge that you can never have a compound containing silicon AND molybdenum! Is he really not aware of [insert fundamental law of chemistry here]?? I'm not wasting my time on this buffoon!"
The question is far more trouble than it's worth. "SinMonNn? Hell, I don't know - I'd have to spend a lot of time playing around in the lab before I could figure out if this is possible, and why would I want to do that? My time is valuable!"
I'm perfectly OK with any of the above, but for the sake of giving me closure and preventing me from pestering every scientific forum I can find online, could anyone let me know whether we're in scenario 1, 2 or 3?