Ortho-, meta-, and para-pyridyl oximinoacetoacetates and silver(I)-oximinoacetoacetate networks: Synthesis and X-ray crystallographic analyses
作者:Muhammad Altaf、Yi Wang、Ingrid M. Socorro、Helen Stoeckli-Evans
DOI:10.1016/j.ica.2011.11.010
日期:2012.3
of novel oximinoacetoacetate ligands, ortho-, meta-, and para-pyridyloximinoacetoacetates, HL1, HL2 and HL3, respectively, have been synthesized and structurally characterized. Ligands HL2 and HL3 were further used for the synthesis of three new silver(I) complexes: [Ag(HL2)2]·NO3 (1) a pincer-type mononuclear complex, [Ag2(L2)2(HL2)2] (2) a centrosymmetric dimer complex, and [Ag(L3)(HL3)]n (3) a two-dimensional
已经合成了一系列新颖的肟基乙酰乙酸酯配体,分别为邻,间和对位吡啶基乙酰乙酸酯HL1,HL2和HL3,并对其结构进行了表征。配体HL2和HL3还用于合成三种新的银(I)配合物:[Ag(HL2)2 ]·NO 3(1)钳型单核配合物[Ag 2(L2)2(HL2)2 ](2)中心对称的二聚体复合物,和[Ag(L3)(HL3)] n(3)二维配位聚合物。具有多个氢供体和受体原子的配体在固态下形成非共价氢键相互作用,导致形成一维氢键链和螺旋。Ag I化合物的结构研究表明,这些配体可以有效地用于构建氢键二维网络。在复杂1的扩展的二维网络是通过涉及OH基团的配位体oximinoacetoacetate和NO的O-原子的氢键形成3 -抗衡阴离子。复杂2通过涉及两个配体分子的O–H⋯O氢键组装成二维多层超分子网络。在配合物3的情况下,形成了二维配位聚合物。与络合物1和2不同,此处在晶体中未观察到经典的氢键相互