| 2，2′-联喹啉-4，4′-二羧酸构筑的一维钴(Ⅱ)配位聚合物(英文) |
| A One Dimensional Co(Ⅱ) Coordination Polymer Constructed from 2,2′-Biquinoline-4,4-dicarboxylic Acid |
|
| 摘要: 利用2，2′-联喹啉-4，4′-二羧酸钠 (Na2bqdc)，2，2-联吡啶与硫酸钴在溶剂热作用下合成了1个一维配位聚合物[Co(bqdc)(bipy)(H2O)]n (1)。通过元素分析、粉末衍射、红外、紫外光谱对配合物进行了表征，利用X射线单晶衍射仪测定了其晶体结构。中心CoⅡ离子分别与2个来自2，2-联喹啉-4，4-二羧酸钠配体的双齿羧基氧原子和1个来自配体的单齿羧基氧原子、辅助配体2，2-联吡啶上的2个N原子和1个水分子的氧原子配位，形成了1个稍微扭曲的八面体配位构型。紫外光谱实验表明，相对2，2′-联喹啉-4，4′-二羧酸钠配体，配合物的紫外光谱发生了少量的蓝移。对该配合物多晶样品的差热分析(TGA)表明该化合物在217 ℃后开始分解。 |
| 关键词: 2，2′-联喹啉-4，4′-二羧酸钠 钴配合物 晶体结构 紫外光谱 |
| 基金项目: |
| Abstract: Utilizing 2,2′-biquinoline-4,4-dicarboxylate ligand (Na2bqdc) and CoSO4 with 2,2′-bipyridine as auxiliary ligand under hydrothermal condition produces a novel coordination polymer [Co(bqdc)(bipy)(H2O)]n(1). The coordination geometry around central metal CoⅡ ion can be best described as a distorted octahedron which constructed by one bidentate chelating carboxylic group, one monodentate carboxylic group, two nitrogen atoms from the chelating bipyridine ligand and one water molecules. Crystal data for 1, P21/c, a=1.367 1(15), b=0.999 6(11), c=1.994 8(16) nm, β=113.555(6)°, V=2.498 9(4) nm3, Z=4, R1=0.038 8, wR2=0.085 1. The UV absorption spectrum of title compound show a small blue shifts corresponding to the free ligand probably be due to the formation of coordination polymer and supramoleculer hydrogen-bonding interactions thus increasing the rigidity of 1. Thermogravimetric analysis (TGA) of the polycrystalline sample shows that the compound is stable up to 217 ℃. CCDC: 847230. |
| Keywords: 2,2′-biquinoline-4,4-dicarboxylate cobalt(Ⅱ) complex crystal structure Ultra-Violet |
| |
| 摘要点击次数: 1471 |
| 全文下载次数: 1779 |
| 唐云志,杨燕明,曹 赞,漆婷婷,黄广华,温和瑞.2，2′-联喹啉-4，4′-二羧酸构筑的一维钴(Ⅱ)配位聚合物(英文)[J].无机化学学报,2012,28(6):1265-1270. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
