基于反-双(β-二酮)-1,4-环己二胺的席夫碱Hg(Ⅱ)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
作者单位E-mail
蔡雪语 贵州医科大学医学检验学院, 贵阳 550004  
张奇龙 贵州医科大学基础医学院化学教研室, 贵阳 550004 gzuqlzhang@126.com 
摘要: 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HgCl2、HgI2进行配位反应,得到4个Hg(Ⅱ)配合物:[Hg2(L1)Cl4]n1),{[Hg2(L2)Cl4]·L2}n2),[Hg2(L1)I4]n3),[Hg2(L2)I4]n4)。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12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。
关键词: β-二酮  席夫碱  Hg(Ⅱ)配位聚合物  晶体结构
基金项目: 贵州省教育厅自然科学研究项目(黔教合KY字[2015]415号)、贵阳市科技局国家自然科学基金培育项目(No.GY2015-41)和贵阳市科技局-贵州医科大学联合基金(筑科合同(2017)5-32号)资助。
Abstract: Four mercury(Ⅱ) complexes, namely[Hg2(L1)Cl4]n (1), {[Hg2(L2)Cl4]·L2}n (2),[Hg2(L1)I4]n (3) and[Hg2(L2)I4]n (4), have been obtained by the reaction of mercury salts with two bis(β-diketone) Schiff bases (L1=trans-bis(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(Ⅱ) ions connect with γ-C atoms and three Cl-ions to form a one-dimensional chain in complexes 1, 2. In complex 3 the center Hg(Ⅱ) ions connect with O atoms and three I- ions to form a two-dimensional net structure, while in complex 4 the center Hg(Ⅱ) ions connect with O atoms and three I-ions to form a one-dimensional chain.
Keywords: β-diketone  Schiff base  Hg(Ⅱ) coordination polymers  crystal structure
投稿时间:2017-09-20 修订日期:2018-01-02
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蔡雪语,张奇龙.基于反-双(β-二酮)-1,4-环己二胺的席夫碱Hg(Ⅱ)配位聚合物的合成与晶体结构[J].无机化学学报,2018,34(4):633-638.
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