A Novel Three-dimensional Triazole-based Zinc(Ⅱ) Coordination Polymer Controlled by the Spacers of Dicarboxylate Ligand with(4~2,6~2,8~2)(4,6~2,8~3) Topology

A novel mixed-ligand coordination polymer [Zn(BTA)(ip)0.5]n(1, HBTA = benzotriazole, H2 ip = isophthalic acid) has been synthesized under hydrothermal conditions, which was further characterized by X-ray diffraction, IR spectrum, elemental analysis and TG-DTA experiments. Complex 1 crystallizes in monoclinic system, space group Pnma with a = 8.9731(5), b = 22.0477(12), c = 10.0217(5) ?, V = 1982.66(18) ?3, Z = 8, C10 H6 ZnN3 O2, Mr = 265.55, Dc = 1.779 g/cm3, μ = 2.462 mm-1, F(000) = 1064, the final R = 0.0225 and wR = 0.0652 with I 2?(I). This complex is a 3 D framework with the(42,62,82)(4,62,83) topology. Furthermore, the thermal stability of complex 1 is observed to be dependent on the polymeric structure nature. Strong solid-state luminescence emissions suggest that complex 1 is a good candidate for light emission materials.     

A 2D Copper(Ⅱ) Complex with Half Paddlewheel-like Building Block Controlled by 1,2,4,5-Benzenetetracarboxylic Acid: Synthesis,Crystal Structure and Luminescence Property

Self-assembly reaction of 1,2,4,5-benzenetetracarboxylic acid(H_4 btc) with CuCl_2 in mixed N,N-dimethylformamide(DMF), methanol and aqueous solution at room temperature generated a 2D complex, [Cu(btc)_(0.5)(DMF)(H_2 O)]_n(1) which was further characterized by X-ray diffraction, IR spectrum, elemental analysis and TG-DTA experiments. The structure determination reveals that the fundamental unit of complex 1 contains one Cu(Ⅱ) ion, half a btc~(4–), one DMF molecule and one water molecule, forming a half paddlewheel-like building block [Cu_2(btc)(DMF)_2(H_2 O)_2] which is different from those previous Cu-btc(Ⅱ) polymers obtained either in water or other media without water. It crystallizes in monoclinic system, space group C2/c with a = 22.8209(14), b = 9.2244(6), c = 10.8876(7) ?, b = 117.5210(10)o, V = 2032.6(2) ?~3, Z = 2, C_8 H_(10) CuNO_6, M_r = 279.71, D_c = 1.828 g/cm~3, μ = 2.162 mm-1, F(000) = 1136, the final R = 0.0225 and wR = 0.0652 with I 2s(I). Furthermore, the thermal stability of complex 1 is observed to be dependent on the polymeric structure nature. And the luminescent measurements show that complex 1 produces strong emission at room temperature.     

混合式教学应用于校通识课的探索与实践——以“奇妙的化学世界”为例

“奇妙的化学世界”是天津师范大学面向全校非化学专业的本科生开设的一门通识选修课。课程主要采用启发式教学模式、案例式教学模式、互动式教学模式等相结合的混合式教学模式，涉及当今活跃的科研领域和生活实际。课程采用多种方式如图片展示、教学辅助视频、小组讨论、调查问卷等，调动学生的积极性和主动性，使学生在较为轻松的状态下掌握课程内容。此外，力求做到集知识性、实用性、趣味性于一体，避免了化学专业课程中的复杂多变的化学结构描述。     

4-(1,2,4-三唑-1-基)苯酚铜(Ⅱ)/镍(Ⅱ)配合物的晶体结构及荧光性质（英文）

合成并通过单晶和粉末X射线衍射、元素分析、红外光谱、热失重以及荧光光谱技术表征了含有4-(1,2,4-三唑-1-基)苯酚(hptrz)配体的2个过渡金属配合物{[Ni(H_2O)_2(hptrz)_2(tp)]·2DMF}_n(1)和[Cu(hptrz)_2(SCN)_2]·2H_2O (2)(H_2tp为对苯二甲酸)。配合物1中八面体的Ni(Ⅱ)离子由tp~(2-)阴离子拓展形成线性的一维链状结构;而配合物2则呈现中心对称的单核结构。配合物中,中性的hptrz配体呈现端基配位模式,并通过形成O-H…O氢键相互作用将低维结构拓展为高维超分子网络。此外,配体内的电荷转移使这2个配合物均在紫外区发射出强的荧光发射峰。     

4-(1,2,4-三唑-1-基)苯酚铜(Ⅱ)/镍(Ⅱ)配合物的晶体结构及荧光性质

合成并通过单晶和粉末X射线衍射、元素分析、红外光谱、热失重以及荧光光谱技术表征了含有4-（1,2,4-三唑-1-基）苯酚（hptrz）配体的2个过渡金属配合物{[Ni（H₂O）₂（hptrz）₂（tp）]·2DMF}_n（1）和[Cu（hptrz）₂（SCN）₂]·2H₂O（2）（H₂tp为对苯二甲酸）。配合物1中八面体的Ni（Ⅱ）离子由tp^2-阴离子拓展形成线性的一维链状结构;而配合物2则呈现中心对称的单核结构。配合物中,中性的hptrz配体呈现端基配位模式,并通过形成O-H…O氢键相互作用将低维结构拓展为高维超分子网络。此外,配体内的电荷转移使这2个配合物均在紫外区发射出强的荧光发射峰。