基于反-双(β-二酮)-1,4-环己二胺的席夫碱Hg髤配位聚合物的合成与晶体结构

Hg(Ⅱ) Coordination Polymers Based on trans-Bis(β-diketone)cyclohexanediimine Ligands: Syntheses and Crystal Structures

合成了反1,4-环己二胺桥联β-二酮的席夫碱配体L1(反-双(乙酰丙酮)-1,4-环己二胺)和L2(反-双(苯甲酰丙酮)-1,4-环己二胺),然后将配体L1和L2分别与Hg Cl2、Hg I2进行配位反应,得到4个Hg(Ⅱ)配合物:[Hg2(L1)Cl4]n(1),{[Hg2(L2)Cl4]·L2}n(2),[Hg2(L1)I4]n(3),[Hg2(L2)I4]n(4)。并通过元素分析、红外光谱、粉末衍射、单晶X射线衍射等对配合物的结构进行了表征。在固体状态下,配合物1和2的Hg(Ⅱ)离子与配体中的γ-C原子及3个氯离子配位形成1D链结构,配合物3的Hg(Ⅱ)离子与L1配体中的烯醇式氧原子,以及3个碘离子配位形成2D网状结构,配合物4的Hg(Ⅱ)离子与配体L2中的烯醇式氧原子及3个碘离子配位形成1D链结构。

Four mercury!complexes,namely[Hg2(L 1)Cl4]n(l),{[Hg2(L2)Cl4].L2}n(2),[Hg2(L 1)I4]n(3)and[Hg2(L2)I4]n(4),have been obtained by the reaction of mercury salts with two bis(^-diketone)Schiff bases(L 1=transbis(acetylacetone)-1,4-diaminocyclohexane,and L2=trans-bis(benzoylacetone)-1,4-diaminocyclohexane)in the ethanol solution.The structures of these complexes were characterized by elemental analysis,infrared spectroscopy,powder X-ray diffraction and X-ray single-crystal diffraction.In the solid state,the center Hg!ions connect with"-C atoms and three Cl-ions to form a one-dimensional chain in complexes l,2.In complex 3 the center Hg!ions connect with O atoms and three I-ions to form a two-dimensional net structure,while in complex 4 the center Hg!ions connect with O atoms and three I-ions to form a one-dimensional chain.CCDC:1575208,l;1575210,2;1575211,3;1575209,4.