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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Self-assembly of tri-pyrazolate linked cages with di-palladium coordination motifs
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Self-assembly of tri-pyrazolate linked cages with di-palladium coordination motifs

机译:具有二钯配位基序的三吡唑酸酯连接的笼子的自组装

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By employing di-palladium complexes [(N^N)_2Pd_2(NO_3~?)_2](NO_3~?)_2 (where N^N = 2,2’-bipyridine, bpy; 4,4’-dimethylbipyridine, dmbpy; 1,10-phenanthroline, phen) as corners and tripyrazole functional ligands (H_3L~1–H_3L~5) as linkers, a series of highly-positively-charged tripyrazolate-bridged metallo-cages with different conformations and cavities such as [Pd_6L_2]~(6+) (1 or 5, where L = L~1 or L~5), [Pd_(10)L~2_4]~(10+) (2a, 2b and 4b, where L = L~2 or L~4) and [Pd_(12)L_4]~(12+) (3 or 4a, where L = L~3 or L4) have been synthesized through a dimetal coordination directed self-assembly with spontaneous deprotonation of the tripyrazole ligands in aqueous solution. These complexes have been fully characterized by ~1H and ~(13)C NMR, cold-spray ionization or electron spray ionization mass spectrometry (CSI-MS, ESI-MS) and elemental analysis. Complexes 1, 2a, 2b, 3 and 4 have also been determined by single-crystal X-ray diffraction structural analysis. In the case of complex 3, six PF_6~? anions were encapsulated within the cavity composed of adjacent di-Pd corners.
机译:通过使用二钯配合物[(N ^ N)_2Pd_2(NO_3〜?)_ 2](NO_3〜?)_ 2(其中N ^ N = 2,2'-联吡啶,bpy; 4,4'-二甲基联吡啶,dmbpy; 1,10-邻菲咯啉(phen)作为角,三吡唑功能性配体(H_3L〜1–H_3L〜5)作为连接子,是一系列高构型的带三唑并膦酸酯桥连的金属笼,具有不同的结构和腔,例如[Pd_6L_2] 〜(6+)(1或5,其中L = L〜1或L〜5),[Pd_(10)L〜2_4]〜(10+)(2a,2b和4b,其中L = L〜2或L〜4)和[Pd_(12)L_4]〜(12+)(3或4a,其中L = L〜3或L4)是通过双金属配位定向自组装合成的,其中三唑配体自发去质子化水溶液。这些配合物已通过〜1H和〜(13)C NMR,冷喷雾电离或电子喷雾电离质谱(CSI-MS,ESI-MS)和元素分析充分表征。配合物1、2a,2b,3和4也已通过单晶X射线衍射结构分析确定。在复数3的情况下,六个PF_6〜?将阴离子包封在由相邻的di-Pd角组成的腔体内。

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