Three efficient methods for the synthesis of a series of Cu(Ⅱ) and Cu(Ⅰ) complexes based on imidazo[1,5-a] pyridine derivatives were developed. These methods include the following: (ⅰ) Cu(Ⅱ) salts were used as metal sources and N, N-dimethylformamide was employed as a solvent as well as a reductant to produce Cu(Ⅰ) complexes. (ⅱ) An iodidecontaining compound was utilized as a ligand and iodide source to prepare complexes. An in situ metalligand reaction occurred and an iodide-bridged copper complex was generated. (ⅲ) A series of aldehydes were added to the reaction systems to induce in situ metal-ligand reactions between the aldehydes and the imidazo[1,5-a]pyridine derivatives, producing polydentate ligand scaffolds. Eight complexes were prepared and characterized. The catalytic activities of these complexes toward the ketalization of ketones by ethylene glycol were investigated. With the exception of complex 4, the remaining seven complexes all showed high catalytic activity. The lower activity of 4 may be due to the larger radius of bridging iodide ions and the shorter Cu(Ⅰ)…Cu(Ⅰ) distance.

在溶剂热条件下以4，4′，4″-三甲酸三苯胺(H₃NTB)为电子给体、4，4′-联吡啶(bipy)为电子受体，与金属盐Zn(NO₃)₂·6H₂O反应，制备了一例具有电荷转移特性和三维多轮烷结构的金属有机框架荧光粉[Zn₃(NTB)₂(bipy)]·4H₂O (1)。利用X射线单晶衍射、X射线粉末衍射、热重分析等技术确定了化合物1的晶体结构、相纯度和稳定性。晶体结构分析表明化合物1结晶于三斜晶系，P1空间群，晶胞参数a=1.374 87(15) nm，b=1.376 65(15) nm，c=1.795 50(18) nm，α=86.994(9)°，β=82.384(9)°，γ=64.835(11)°。室温下，该化合物具有亮黄色的荧光(发射峰为575 nm)，发光寿命为16.01 ns。温度依赖光致发光测试表明，该化合物在150 ℃时仍能保持92.05%的发光强度(相对于室温)，高于部分硼酸、硅酸盐基无机荧光粉。

全英文及中英双语授课曾是国内顶尖高校化学等理科专业教学改革与发展的重要方向之一。然而，随着语言类人工智能技术的飞速发展、国际形势的变化以及不断增加的汉语学术交流需求，双语教学(尤其是全英文教学)正面临严峻的挑战。本文从英、汉两种语言的本质属性、不同类型学生的实际需求，以及语言在课程思政建设中的作用等方面进行分析，探讨化学课程双语教学中文与英文授课的定位与角色，为双语教学模式的优化提供参考。