2-2 -Bipyridyl crown ether ligand

Rebek (89, 90) and co-workers have synthesized the 2-2 -bipyridyl crown ether ligand (48) and elegantly shown that this system exhibits... [Pg.111]

Coordinated transition metal redox-active macrocycles, 39 108-124 ammonium cation, 39 128-133 crown ether and bis crown ether ligands containing bipyridyl transition metal recognition sites, 39 111 crown ether dithiocarbamate and dithiolene complexes, 39 123-124 metalloporphyrin crown ether compounds, 39 108-109... [Pg.60]

Crown Ether and Bis Crown Ether Ligands Containing Bipyridyl Transition Metal Recognition Sites... [Pg.111]

The two ends of the bipyridyl-bis-crown ether ligand LI 154 can be clipped together by K+. Reaction of [Cu(MeCN)4]+ with two equivalents of LI 154 gave the precursor [Cu(Ll 154)2]+, which with an excess of KPFe gave the novel alkali-metallated catenate [Cu(KL1154)2](PF6)3. The potassium binds the benzo-15-crown-5 units sufficiently tightly for demetallation, with potassium or tetramethy-lammonium cyanide, to be feasible, giving the [2]-catenane (KL 1154)2 as its hexafluorophosphate salt [299] (Scheme 4-32),... [Pg.353]

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