You haven't seen nothing. Behold, the theorized molecule with a coordination number of 28-in-18-electron-con-fi-the-Li-Liu/aaecf9528a1bb3eaf6db51141b3390ecd31e23ad/figure/0).
This really should be stable so long as you don't put anything remotely oxidizable next to it. But when you try to combine ozone with platinum hexafluoride, the O3^+ cations react with O3 to form O5^+ and atomic oxygen, and then the atomic oxygen kills another O3^+ to form O2^+ and regular semi-happy oxygen.
I've made a fair amount of diborane. It's awful stuff. First you have to pump down your Stock vacuum line to 10^-4 atm (I think) using a mechanical pump and a mercury diffusion pump. Then you have keep checking there or no small leaks. And there was always slow leaks. And diborane smells horrible.
I made B2H6 from lithium aluminum hydride and boron trifluoride (dissolved in ether). It took about a day to make and purify ~0.25 mol, and by the end of the day, I was pretty wasted.
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From the diborane, I made tetraborane, and then a ethylene adduct of tetraborane.
After one spectacular detonation, I discovered what I believe is the most stupid way to make polyethylene.
Fires, bangs and broken glass - not fun
btw the 3 centered bond was called a "banana" bond.
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There is a wonderful book on the development of liquid rocket fuels. Years ago a copy was precious, but now you can get Ignition! on Amazon
There is a chapter on "The Billion Buck Boron Booboo".