First Structurally Characterized Tricyanomanganate(III) and its Magnetic {Mn^III₂M^II₂} Complexes (M^II = Mn, Ni)

Treatment of tris(3-cyano-2,4-pentanedionato)manganese(III) with KTp*, followed by [NEt4]CN affords [NEt4][(Tp*)MnIII(CN)3] (1); subsequent treatment of 1 with divalent triflates (OTf) and 2,2′-bipyridine (bpy) affords {MnIII2MII2} complexes (MII = Mn, 2; Ni, 3). Magnetic measurements show that 1−3 exhibit ST = 1, 3, and 4 spin ground states, respectively.将三(3-氰基-2,4-戊二酮合)锰(III)与KTp*反应，再与四乙基氰化铵([NEt4]CN)作用，得到配合物[NEt4][(Tp*)MnIII(CN)3]（记为1）；随后将1与二价三氟甲磺酸盐(OTf)和2,2'-联吡啶(bpy)反应，得到{MnIII2MII2}型配合物（其中MII为Mn时记为2，为Ni时记为3）。磁性表征结果表明，配合物1、2、3分别具有基态自旋ST=1、3和4。