| 基于阴离子调控策略的Co(Ⅱ)配位聚合物的合成、晶体结构及荧光性质 | |
| Syntheses, Crystal Structures and Fluorescence Properties of Co(Ⅱ) Coordination Polymers Based on Anion Regulation Strategy | |
| 摘要: 以三键桥联吡啶类配体2，6-二（3'-吡啶乙炔基）-4-甲基苯胺（L）为配体，在常温混合溶剂（二氯甲烷-甲醇）中分别与CoCl2、Co（SCN）2通过自组装反应，获得了一维及二维配位聚合物[Co（L Cl2]n（1）及[Co（L）2（SCN）2]n（2），通过红外、元素分析、X射线单晶衍射等检测手段对所合成的配合物进行了结构表征。对比1和2的单晶结构可以发现，配体L在配位聚合物1和2中的配位取向及结构相似，不同的是Co（Ⅱ）离子的配位数受配位阴离子的影响而不同：配位聚合物1中四配位的Co（Ⅱ）通过2个配体的相互连接呈现一维的弯曲链状结构，而配位聚合物2中六配位的Co（Ⅱ）则通过4个配体的相互连接得到二维的平面结构。2个配合物中均存在氢键及π-π相互作用。通过粉末衍射证明了配位聚合物1和2为单一晶相，其固态下的荧光测试显示，二者的荧光均减弱，并相对于配体L有红移（1）及蓝移（2）。 | |
| 关键词: 吡啶配体 阴离子调控 Co(Ⅱ)配位聚合物 晶体结构 | |
| 基金项目: 国家自然科学基金（No.21101099）资助项目。 | |
| Abstract: Two coordination polymers[Co(L) Cl2]n (1) and[Co(L)2(SCN)2]n (2) were obtained by using 4-methyl-2,6-bis(pyridin-3-ylethynyl) aniline (L) and Co(Ⅱ) salts in CH2Cl2/MeOH mixed solvent under room temperature. The complexes 1 and 2 were characterized by IR, elemental analysis and X-ray single crystal diffraction. The structural analysis revealed that complex 1 has 1D chain structure and 2 has 2D plane structure. The reason of the structure difference was anion choice because the L in both of the coordination complexes adopts almost same trans-N,N donor configuration. Complex 1 has four-coordinated Co(Ⅱ)) which coordinated to two L molecules, while complex 2 has six-coordinated Co(Ⅱ) which coordinated to four L molecules. The XRD and fluorescence property of two complexes were investigated. Compared to the emission spectrum of L, the emission maximum of the complex 1 was red shift and 2 was blue shift. | |
| Keywords: pyridine ligand anion regulation Co (Ⅱ) coordinate complexes crystal structure | |
| 投稿时间：2018-10-03 修订日期：2018-11-20 | |
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| 李响,赵怀安,苏剑,程军妍,王鹏.基于阴离子调控策略的Co(Ⅱ)配位聚合物的合成、晶体结构及荧光性质[J].无机化学学报,2019,35(1):109-115. | |
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