Metal containing derivatives of aminotriazine polymer and method of

Abstract

Metal containing compounds having a graphite-like layer structure are derived from poly(amino-s-triazine), [A], which has a layer structure and is represented by (C.sub.3 N.sub.3).sub.2 N.sub.x H.sub.y, where 2.ltoreq.x.ltoreq.4, and 0.ltoreq.y.ltoreq.8. Reaction of [A] with a transition metal M at 400.degree.-1000.degree. C. gives a compound represented by C.sub.a NH.sub.b M.sub.c, where 0.6.ltoreq.a.ltoreq.20.0, 0.ltoreq.b.ltoreq.1.0, and 0.001.ltoreq.c.ltoreq.0.5. This compound exhibits magnetism. Reaction of [A] with a halide of a transition metal or aluminum at 200.degree.-500.degree. C. gives C.sub.6 N.sub.p H.sub.q M.sub.r X.sub.s, where M is a transition metal or Al, X is a halogen, 8.ltoreq.p.ltoreq.10, 0.ltoreq.q.ltoreq.10, 0.6.ltoreq.r.ltoreq.1.5, and 0.ltoreq.s.ltoreq.1. When M is a transition metal the compound exhibits paramagnetism. When X is Al, heating of a powder of the compound at 800.degree.-950.degree. C. provides an AlN powder coated with an amorphous organic substance composed of C, N and H and, hence, protected against oxidation. The same coated AlN powder is obtained also by reacting a powder of [A] with an aluminum halide at 800.degree.-950.degree. C. By heating the coated AlN powder at a temperature above 1000.degree. C. the amophous organic coating sublimates and decomposes to leave a pure AlN powder which is suitable for sintering.