Bulk synthesis and characterization of graphite-like B–C–N and B–C–N heterodiamond compounds

Abstract

High quality graphite-like B–C–N compounds used for the shock-synthesis of B–C–N heterodiamonds were bulk-synthesized in good yield by pyrolysis of the polymers between BCl₃ and commercially available nitriles at 1773 K. It was elucidated that the series of obtained heterodiamond compounds are described by the formula CB_xN_x(BN)_y composed of CB_xN_x and (BN)_y segments and have an unusual structure in which diamond-like carbon atoms are randomly substituted for B/N atoms and (BN)_y segments, based on IR, XPS and X-ray powder diffraction.