| 含4,4'-联吡啶桥联的阳离子链和嘌呤-羧酸根抗衡阴离子的一维FeⅡ和CoⅡ聚合物,及由混合羧酸根配体构筑的二维EuⅢ聚合物的合成与表征 | |
| Syntheses and Determination of 1>D FeⅡ and CoⅡ Polymers Containing 4,4'-Bipyridine-Bridged Cationic Chain and Counterion Purine-Containing Carboxylate, and 2D EuⅢ Polymer of Mixed Carboxylate Ligands | |
| 摘要: 通过2'，3'-双脱氧肌苷和氯乙酸反应，得到1个多功能配体2-（6-oxo-6，9-dihydro-1H-purin-1-yl）aceticacid（HL）。该配体与其它附加配体一起与相应的金属盐反应，分别得到3个配位聚合物{[Fe（4，4'-bpy）（H2O）4]（L'）2}n（1），{[Co（4，4'-bpy）（H2O）4]（L'）2}n（2）和{[Eu（ox）0.5（su）（H2O）2]·H2O}n（3）（4，4'-bpy=4，4'-二联吡啶，ox=草酸盐，su=琥珀酸盐，L'=L的互变异构体2-（6-oxo-6，7-dihydro-1H-purin-1-yl）acetate]。3个配合物均为单斜晶系C2/c空间群。配合物1和2为异质同构体，是由4，4'-二联吡啶桥联金属离子形成的一维链状结构，配合物3是由混合羧酸根构筑的二维框架结构。在配合物1和2中，脱质子的配体HL没有与金属离子配位，而是以互变异构体L'并通过氢键结合成二聚阴离子对[（L'）]2作为抗衡离子存在于配合物中。在配合物3中，配体HL分解为草酸根，2个EuⅢ被草酸根连接成二聚单元，这个二聚单元又被琥珀酸根连接成二维聚合物。另外还对配合物1和2的红外光谱、热分解性质以及配合物3的荧光性质进行了分析研究。 | |
| 关键词: 含嘌呤的羧酸配体 配位聚合物 晶体结构 热分析 荧光 | |
| 基金项目: 国家自然科学基金（No.20771094和21271157），结构化学国家重点实验室科学基金（No.20120008）资助项目。 | |
| Abstract: Apurine-containing multifunctional ligand 2-(6-oxo-6,9-dihydro-1H-purin-1-yl)acetic acid (HL) was synthesized through the reaction of chloroacetic acid with 2',3'-dideoxyinosine. Reactions of HL, corresponding metal salts and accessional ligands yield three new coordination polymers {[Fe(4,4'-bpy)(H2O)4](L')2}n (1), {[Co(4,4'-bpy)(H2O)4] (L')2}n (2) 和 {[Eu(ox)0.5(su)(H2O)2]·H2O}n (3) (4,4'-bpy=4,4'-bipyridine, ox=oxalate, su=succinate, and L'=tautomer 2-(6-oxo-6,7-dihydro-1H-purin-1-yl)acetate), respectively. Complexes 1~3 all belong to the monoclinic system with a C2/c space group. Isostructural polymers 1 and 2 feature a 1Dcationic chain bridged by 4,4'-bpy with metal nodes whereas polymer 3 is a 2D framework bridged by mixed carboxylate. In 1 and 2, the ligands HLare not coordinated with metal ions, only as counter ions in a hydrogen-bonding cyclic dimer [(L')]2. In3, ligands HLwere decomposed into oxalic acids, and two EuⅢ are connected together by the oxalate to form dimeric units which are further bridged into the novel 2Dpolymer by succinates. Otherwise, infrared spectra and thermal behaviors of 1 and 2 as well as the fluorescence of 3 were also investigated. CCDC: 917893, 1; 91789, 2; 917892, 3. | |
| Keywords: purine-containing carboxylate ligand coordination polymer crystal structure thermal analysis fluorescence | |
| 投稿时间：2013-11-30 修订日期：2014-03-30 | |
| 摘要点击次数: 1999 | |
| 全文下载次数: 1359 | |
| 周映霞,王睿颖,卢周卉,储彩琴,吴本来,张鸿云.含4,4'-联吡啶桥联的阳离子链和嘌呤-羧酸根抗衡阴离子的一维FeⅡ和CoⅡ聚合物,及由混合羧酸根配体构筑的二维EuⅢ聚合物的合成与表征[J].无机化学学报,2014,30(9):2141-2150. | |
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