Coordination Polymers Utilizing N-Oxide Functionalized Host Ligands

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• 作者：James J. Henkelis ; Sarah A. Barnett ; Lindsay P. Harding ; Michaele J. Hardie
• 刊名：Inorganic Chemistry
• 出版年：2012
• 出版时间：October 15, 2012
• 年：2012
• 卷：51
• 期：20
• 页码：10657-10674
• 全文大小：1064K
• 年卷期：v.51,no.20(October 15, 2012)
• ISSN：1520-510X

文摘

Pyridyl functionalized host molecules are oxidized to their N-oxide analogues and form a series of coordination polymers and discrete complexes with transition metal cations. Complex {[Ag₃(NMP)₆(L1)₂]路3(ClO₄)}_{鈭?/sub> where L1 = tris(isonicotinoyl-N-oxide)cyclotriguaiacylene, NMP = N-methylpyrrolidone, is a three-dimensional (3-D) 3,6-connected coordination polymer of pyrite-like (pyr) topology and features ligand unsupported argentophilic interactions, while two-dimensional (2-D) 3,6-connected coordination polymers with the rarely reported kagome dual (kgd) topology are found for [M(L1)2]²⁺ where M = Zn, Cd, Cu. Ligand L2 = tris(nicotinoyl-N-oxide)cyclotriguaiacylene forms a 2-D coordination polymer with 4⁴ (sql) grid topology in complexes {[M(L2)2(DMF)2]路2ClO4路8(DMF)}鈭?/sub> M = Cd or Cu, DMF = N,N鈥?dimethylformamide, and a double-linked chain structure in {[Co(L2)2(DMF)2]路2NO3路4(DMF)路H2O}鈭?/sub>, and both types of structure feature hand-shake self-inclusion motifs either within or between the polymers. 2-D coordination networks with 6³ (hcb) topologies are found in complexes {[M(L3)(NO3)2]路2(DMF)}鈭?/sub> (M = Cd, Zn) and {[Cu5(L3)2Cl10(NMP)4]}鈭?/sub> where L3 = tris(2-pyridylmethyl)cyclotriguaiacylene, while [Ag2(L3)2(NMP)4]路2(BF4)路2(NMP) has a discrete dimeric structure which again shows hand-shake host鈥揼uest interactions supported by 蟺鈥撓€ stacking.}