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| 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 |
| Received:August 29, 2017 |
| 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). |
| Author Name | Affiliation | E-mail | | HOU Wenming | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | hwm@ipm.com.cn | | CUI Hao | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | | | YE Qingsong | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | qingsongye@126.com | | LIU Weiping | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | |
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| 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. |
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