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Coordination-driven self-assembly of palladium(Ⅱ)-based metallacalixarenes as anion receptors using flexible pyridine-bridged diimidazole ligands
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作者 Wutong Du Jin Tong +2 位作者 Wei Deng Mingxue Wang Shuyan Yu 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第1期485-488,共4页
Two types of palladiu m(Ⅱ)-based metallacalixarenes[ML]^(2+)and[ML_(2)]^(2+)have been synthesized through coordination-driven self-assembly from a series of flexible pyridine-bridged diimidazole ligands[2,6-bis((1 H-... Two types of palladiu m(Ⅱ)-based metallacalixarenes[ML]^(2+)and[ML_(2)]^(2+)have been synthesized through coordination-driven self-assembly from a series of flexible pyridine-bridged diimidazole ligands[2,6-bis((1 H-imidazol-1-yl)methyl)pyridine(L^(1)),2,6-bis((1 H-benzo[d]imidazol-1-yl)methyl)pyridine(L^(2)),2,6-bis((1 H-naphtho[2,3-d]imidazol-1-yl)methyl)pyridine(L^(3))],with palladium(II)-based building blocks[Pd(BF_(4))_(2)(M^(1)-BF_4)and(tmeda)Pd(NO_(3))_(2)(M^(2)-NO_(3))(tmeda=N,N,N',N'-tetramethyl-ethylenediamine)].All complexes were characterized by NMR spectroscopy(^(1)H NMR and^(13)C NMR),mass spectrometry(CSIMS,ESI-HRMS)and elemental analysis.The single crystal X-ray diffraction analysis of[M^(1)L^(2)_2](NO_(3))_(2),[M^(1)L^(3)_2](NO_(3))_(2),[M^(1)L^(3)_2](PF_6)_2 and[M~2 L^(3)](NO_(3))_(2)further confirmed the uniquely single bowl-shape and double bowl-shape structures.The anion binding properties within the metallacalixarenes as receptors were also investigated by NMR titration experiments in DMSO. 展开更多
关键词 SELF-ASSEMBLY diimidazole ligand Metallacalixarenes Anion receptors
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