Abstract An independent self-assembling heterobimetallic [Ni(II)–Eu(III)] salamo-like coordination polymer, $$^1_\infty$$ ∞ 1 [Ni(L)Eu(NO 3 ) 3 (4,4′-bipy)], is synthesized by the one-pot reaction of a symmetrical salamo-like hexadentate ligand (H 2 L = 6,6′-dimethoxy-2,2′-[1,2-ethylenedioxybis(nitrilomethylidyne)]diphenol), Ni(OAc) 2· 4H 2 O, Eu(NO 3 ) 3· 6H 2 O, and 4,4′-bipy. The coordination polymer is obtained by the reaction in the 1:1:1:1 ratio and characterized by elemental analyses, IR and UV-Vis absorption spectra, and single crystal X-ray diffraction. The newly synthesized polymer is constructed from heterobimetallic [Ni(II)(L)Eu(III)] units connected by the 4,4′-bipy exodentate ligand bearing N donor atoms. Meanwhile, the hydrogen bonding, π⋯π stacking and C–H⋯π interactions play an important role in the structure of the coordination polymer. In terms of the antibacterial activity, the polymer dissolved in DMF has a good antibacterial effect on Staphylococcus aureus.

中文翻译：

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结构表征的自组装异双金属 Ni(II)-Eu(III)-SALAMO-联吡啶配位聚合物：合成、光物理和抗菌性能

摘要 一种独立的自组装异质双金属 [Ni(II)–Eu(III)] 类萨拉莫配位聚合物，$$^1_\infty$$ ∞ 1 [Ni(L)Eu(NO 3 ) 3 (4,4' -bipy)]，由对称的类萨拉莫六齿配体（H 2 L = 6,6'-二甲氧基-2,2'-[1,2-乙二氧基双（硝基甲基）]二苯酚）的一锅反应合成, Ni(OAc) 2· 4H 2 O, Eu(NO 3 ) 3· 6H 2 O, 和 4,4'-bipy。配位聚合物是通过以 1:1:1:1 的比例反应获得的，并通过元素分析、IR 和 UV-Vis 吸收光谱以及单晶 X 射线衍射表征。新合成的聚合物由异双金属 [Ni(II)(L)Eu(III)] 单元构成，该单元通过带有 N 供体原子的 4,4'-双齿外齿配体连接。同时，氢键，π⋯π 堆积和 C–H⋯π 相互作用在配位聚合物的结构中起重要作用。在抗菌活性方面，溶解在DMF中的聚合物对金黄色葡萄球菌有很好的抗菌作用。