3 coordination reaction H+NH3→NH4 Ag+2NH3→[AgNH3)2] 4Substitution reaction 2NH3 +2Na- >2NaNH,H, Na loses e,H+gete ◆NH2-NH2联氨（肼），NH氏亚氨基，N≤氮化物 hydrazine ◆NH,OH羟氨，Ammonium hydroxide④ Substitution reaction + + + + + → + → Ag 2N H [Ag(NH ) ] H N H N H 3 3 2 3 4 2 2 570 C 2NH3 + 2Na ⎯⎯⎯→2NaNH + H  催化 ③ coordination reaction ◆NH2 -NH2联氨(肼)，NH 亚氨基，N 氮化物 hydrazine ◆NH2OH 羟氨, Ammonium hydroxide Na loses e, H+ get e