I have a question, could I link a c5c with a LiteBeam AC-GEN2

I have a question, could I link a c5c with a LiteBeam AC-GEN2

No, Ubiquiti completely removed compatibility with standard 802.11 equipment with the AC line of radios, you could do it with the old M series of radios though through WiFi Interop mode on the C5# line.