基于3,5-二硝基苯甲酸和2,2’-联吡啶的Cu(Ⅱ)、Zn(Ⅱ)配合物的合成及晶体结构 |
Synthesis, Crystal Structures of Cu(Ⅱ) and Zn(Ⅱ) Complexes with 3,5-Dinitrobenzoic Acid and 2,2’-Bipyridine Ligands |
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摘要: 以3,5-二硝基苯甲酸(3,5-Hdnbc)和2,2'-联吡啶(2,2'-bipy)为配体,与Zn2+和Cu2+反应,得到了4个配合物[Zn(3,5-dnbc)2(2,2'-bipy)(H2O)]·(3,5-Hdnbc)(1),[Cu(3,5-dnbc)2(2,2'-bipy)(H2O)](2),[Cu(2,2'-bipy)2(3,5-dnbc)](NO3)·2(3,5-Hdnbc)(3),和[Cu(2,2'-bipy)2Cl](3,5-dnbc)·(3,5-Hdnbc)(4)。用元素分析、红外光谱对其进行了表征,并用单晶X-射线衍射测定了配合物的晶体结构;对配合物1和2进行了热重分析。4个配合物均为单核分子。配合物1中,Zn2+离子是五配位的三角双锥结构;配合物2中,Cu2+离子是五配位的变形四方锥结构;配合物3和4中,Cu2+离子均是五配位的三角双锥结构;配合物中存在氢键和π-π堆积等弱的分子间作用力。 |
关键词: 3,5-二硝基苯甲酸 2,2'-联吡啶 金属有机配合物 晶体结构 |
基金项目: 江西省自然科学(青年)基金(No.20132BAB213002);人事部留学人员科技活动项目择优资助(启动类);江西省教育厅基金(No.GJJ12252)资助项目。 |
Abstract: Four metal-organic supramolecular complexes, [Zn(3,5-dnbc)2(2,2'-bipy)(H2O)]·(3,5-Hdnbc) (1), [Cu(3,5-dnbc)2(2,2'-bipy)(H2O)] (2), [Cu(2,2'-bipy)2(3,5-dnbc)](NO3)·2(3,5-Hdnbc) (3), and [Cu(2,2'-bipy)2Cl](3,5-dnbc)·(3,5-Hdnbc) (4) were obtained by the reactions of 3,5-dinitrobenzoic acid and 2,2'-bipyridine as ligands with Zn2+ and Cu2+ ions. The four complexes were characterized by elemental analysis, IR, and the crystal structures were determined by single X-ray diffraction. The complexes of 1 and 2 were characterized by thermal gravimetric analysis. All of the four complexes are mononuclear complexes. In complex 1, Zn2+ is five-coordination in a distorted trigonal bipyramid geometry; in complex 2, Cu2+ is five-coordination in a distorted tetragonal pyramid geometry; in complex 3 and 4, Cu2+ is five-coordination in a distorted trigonal bipyramid geometry. Hydrogen bonding and π-π interactions are observed in these complexes. CCDC: 931926, 1; 931927, 2; 931928, 3; 931929, 4. |
Keywords: 3,5-dinitrobenzoic acid 2,2'-bipyridine organic-metal complex crystal structure |
投稿时间:2013-04-03 修订日期:2013-09-11 |
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胡春燕,肖伟,陶白龙,谭高好,袁厚群.基于3,5-二硝基苯甲酸和2,2’-联吡啶的Cu(Ⅱ)、Zn(Ⅱ)配合物的合成及晶体结构[J].无机化学学报,2014,30(2):257-263. |
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