新型四齿胺膦配合物Ru（OAc）_2P_2N_2H_4的合成和氢化性能

Synthcsis and Hydrogenation Properties of a New Tetradentate Aminophosphine Complex Ru(OA_c)_2P_2N_2H_4

Ｒｕ（ＯＡｃ）＿２（Ｐｈ＿３Ｐ＿２）和等摩尔的Ｎ，Ｎ－双－［邻－（二苯基膦苯甲基）］乙二胺（简称Ｐ＿２Ｎ＿２Ｈ＿４）在四氢峡哺中回流反应，高产率地合成了新型四齿胺膦配位的Ｒｕ（ＯＡｃ）＿２Ｐ＿２Ｎ＿２Ｈ＿４．红外光谱、核磁共振和结构测定表明该配合物具有反式的构型。Ｐ＿２Ｎ＿２Ｈ＿４作为四齿的配体与中心钉原子配位。在温度３０～７０℃、氢压１．０～４．０ＭＰａ内。发现了Ｒｕ（ＯＡｃ）＿２ｐ＿２Ｎ＿２Ｈ＿４是比具有类似组成和结构的Ｒｕ（ＯＡｃ）＿２Ｐ＿２Ｎ＿２更有效的氢化催化剂。

N,N'-bis[o-(diphenylphosphino ) benzylidene] ethylenediamine(P_2N_2)canbreduced to the corresponding N,N'-bis[o-(diphenylphosphino)benzyl] ethylenediamine(P_2N_2H_4) with excess NaBH_4 in refluxing ethanol. Interaction of Ru (OAc)_2(Ph_3P)_2with one e-quivalent of P-2N-2H-4 in refluxing toluene gives the Ru(OAc)_2(P_2N_2H_4)in high yield. IR、NMRand X-ray diffraction study of Ru(OAc)_2P_2N_2H_4 reiews that the two acetate groups are monode-nate coodinated and are in a mutually trans position. The compound as catalyst for homogeneoushydrogenation of acrylic acid have been investigated and the results indicate that title complex ismore effective catalyst than the corresponding Ru(OAc)_2P_2N_2.