ammonia in not given byproducts: CH4, H2; slowly heating (2 °C/min) of B5H8CHCH2 from 25 to 350 °C under a flow of NH3 (100 mL/min), heating (10 °C/min) to 1000 °C, temp. maintained at 1000 ° C for 2 h;; elem. anal., the largely amorphous product changes at 1450 °C to crystalline BN;;