Synthesis, Structure and Metal Binding Property of Internally 1,3-Arylene-Bridged Azacalix[6]aromatics
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https://figshare.com/articles/dataset/Synthesis_Structure_and_Metal_Binding_Property_of_Internally_1_3_Arylene_Bridged_Azacalix_6_aromatics/2468014
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资源简介：
Three internally 1,3-arylene-bridged azacalix[6]aromatics 1–3 were synthesized by the Pd-catalyzed
macrocyclic fragment coupling reaction between a stellated dibrominated
pentamer and N2,N6-dimethylpyridine-2,6-diamine or N1,N3-dimethylbenzene-1,3-diamine. Single-crystal
X-ray analysis revealed that these bimacrocyclic compounds all adopt
a triply pillared groove-shaped conformation, conceptually being derived
from the fusion of two 1,3-alternate macrocycles. Four host/metal
discrete complexes of the all-pyridine host 1, {Co(1)(CH3OH)2}(CoCl4)·3(CH3OH), {Ni(1)(CH3OH)2}(NiCl4), {Ni(1)(CH3OH)2}(ClO4)2·CH3OH and {Cd2(1)(CH3CN)4(H2O)4}(ClO4)4, have been structurally characterized
by X-ray crystallographic analysis, exploring two different metal
binding modes. The metal complexation property of the host 1 in solution was then investigated by the UV-vis and NMR titration. With
variation of the radii of the tested metal ions (Mn2+,
Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, and Hg2+), the host 1 can trap one or two metal ions via four different modes
by using its two coordination cavities or two marginal pyridine rings.
Such metal binding diversity of internally bridged heteracalixaromatics
spotlights their potential applications in metal ion transport, ion
channel, and metallo-enzyme mimics.
创建时间：
2016-02-20
