|
| 醋酸铑(II)与2-吡啶羧酸的反应研究 |
| A Study on the Reaction Process of Dirhodium Tetraacetate and 2-Picolinic Acid |
| 投稿时间：2017-08-29 |
| DOI： |
| 中文关键词: 醋酸铑 吡啶羧酸 单晶结构 氧化反应 |
| 英文关键词: dirhodium tetraacetate picolinic acid single-crystal structure oxidation reaction |
| 基金项目:云南省院省校科技合作项目(2013IB019). |
|
| 摘要点击次数: 1992 |
| 全文下载次数: 2049 |
| 中文摘要: |
| 醋酸铑(II)与2-吡啶羧酸在水溶液中反应，并没有生成与吡啶基团配位该有的紫色或红色产物，而是生成一种绿色混合物。绿色混合物的乙醇溶液在空气中静置2个月时，被空气中的氧气缓慢氧化成单核的三(2-吡啶羧酸)合铑。X衍射单晶测试表明，三(2-吡啶羧酸)合铑为经式结构，同时晶体中含有一个结晶水分子，水分子通过氢键将相邻的2个三(2-吡啶羧酸)合铑分子连接成一维链状超分子，链状分子间又进一步通过吡啶环之间的强烈π-π作用堆积成三维结构。 |
| 英文摘要: |
| A green but not a purple or red product was obtained by reaction of dirhodium(II) tetraacetate with 2-picolinic acid in an aqueous solution, indicated that the 2-picolinic acid are bound to the rhodium center through O atoms but not N atoms. While the ethanol solution of the green product was allowed to evaporate slowly in the air, it was oxidized to mer-rhodium(III) trispicolinate, which was characterized by single-crystal X-ray diffraction, by the oxygen in the air within two months. There is one molecule of water of crystallization per molecule of rhodium(III) trispicolinate complexes. The water molecule is hydrogen-bonded to two carboxylate oxygen atoms from two adjacent rhodium(III) trispicolinate molecules, which links the rhodium(III) trispicolinate molecules to form a chain supramolecular structure. The chains are further packed to a three-dimensional network by the π-π interactions of the rhodium(III) trispicolinatemolecules between the neighboring pyridine rings. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
