含2-苯氧基丙酸根的镍、锌配位聚合物的合成与晶体结构(英文)

Synthesis and Crystal Structures of Nickel(Ⅱ) and Zinc(Ⅱ) Coordination Polymers with 2-Phenoxypropionic Acid

用溶液法和水热法分别合成了2个含2-苯氧基丙酸配体(HL)的聚合物{[NiL2(H2O)2(bipy)].2H2O}n(1)、{[ZnL2(bipy)].2H2O}n(2)(bipy=4,4′-联吡啶),用元素分析、红外光谱、热重和单晶X-射线衍射对产物进行了表征。在化合物1中,镍原子与2个羧基氧原子、2个配位水氧原子及2个4,4′-联吡啶的2个氮原子配位,配位数为6,镍原子的配位构型为畸变的八面体;而在化合物2中,锌原子与2个羧基氧原子及2个4,4′-联吡啶中的2个氮原子配位,锌原子的配位构型为畸变的四面体。在这2个化合物里,4,4′-联吡啶通过氮原子连接金属原子形成一维链状。链间氢键与π-π堆积作用又将一维链链接成二维层状结构。

Two coordination polymers based on 2-phenoxypropionic acid（HL,C9H10O3）,{[NiL2（H2O）2（bipy）]·2H2O}n（1） and {[ZnL2（bipy）]·2H2O}n（2）（bipy=4,4′-bipyridine） were synthesized and characterized by elemental analysis,IR spectroscopy,thermogravimetric analyses and single crystal X-ray diffraction.In the complex 1,the metal atoms are coordinated to two carboxylic oxygen atoms,two oxygen atoms from two water molecules and two nitrogen atoms from two 4,4′-bipyridine ligand.The nickel atoms are six coordinated in a distorted octahedron geometry.The zinc atoms are four coordinated to two carboxylic oxygen atoms and two nitrogen atoms from two 4,4′-bipyridine ligand in a distorted tetrahedron environment for complex 2.The 4,4′-bipyridine ligands in both compounds connect the metal atoms into single dimensional chains by nitrogen atoms.Interchain hydrogen bonds and π-π stacking interactions link the 1D chains into 2D layers and strengthen the stability of molecular structure.CCDC： 820470,1;820471,2.