Abstract

Complexes [Cd₄L₄Cl₈]·2H₂O (I), ZnLCl₂ (II), and PdLCl₂·CH₂Cl₂ (III) (L = chiral derivative of 1,10-phenanthroline bearing diisopropylidene glucose) are synthesized. Single crystals of [Cd₄L₄Cl₈] (IV) are prepared. According to the XRD data, the crystal structure of IV consists of molecules of the tetranuclear complex; the coordination number of two terminal and two central Cd²⁺ ions is 5 (Cl₂N₃) and 6 (Cl₄N₂), respectively. In the structure of IV, the L ligand is a bidentate cyclic ligand; Cl atoms exhibit both bridging and monodentate ligand functions. Complexes I–III are characterized by powder XRD and IR spectroscopy. According to the powder XRD data, I is isostructural to IV. Photophysical properties of solid samples of L, I, II are studied. Compound L exhibits excitation-wavelength dependent emission, the excited state lifetimes varying within nano- and microsecond regions. Complexes I and II exhibit ligand-centered photoluminescence. The luminescence quantum yields are as high as 15%. Cytotoxic properties of L, cadmium chloride, and I–III solutions are studied on the human laryngeal carcinoma cell line Hep2.

中文翻译：

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带有二异丙叉葡萄糖的 1,10-菲咯啉衍生物的 Zn(II)、Cd(II) 和 Pd(II) 配合物：合成、结构、性质

摘要

配合物 [Cd ₄ L ₄ Cl ₈ ]·2H ₂ O ( I )、ZnLCl ₂ ( II ) 和 PdLCl ₂ ·CH ₂ Cl ₂ ( III ) （L  = 带有二异亚丙基葡萄糖的 1,10-菲咯啉的手性衍生物）是合成的。制备[Cd ₄ L ₄ Cl ₈ ]( IV )的单晶。根据XRD数据，IV的晶体结构由四核配合物分子组成；^{两个末端和两个中心Cd 2+}离子的配位数分别为5（Cl ₂ N ₃）和6（Cl ₄ N ₂）。IV结构中，L配体为二齿环状配体；Cl 原子表现出桥连和单齿配体功能。配合物I–III通过粉末 XRD 和红外光谱进行表征。根据粉末 XRD 数据，I与IV是同构的。研究了L、I、II固体样品的光物理性质。化合物L表现出与激发波长相关的发射，激发态寿命在纳秒和微秒区域内变化。配合物I和II表现出以配体为中心的光致发光。发光量子产率高达15%。在人喉癌细胞系 Hep2 上研究了L、氯化镉和I-III溶液的细胞毒性特性。