Abstract
Two linear bis(pyrrol-2-yl-methyleneamine)s linked by a carbon chain, –(CH 2) n –, n=2, 4, were synthesized in high yields by condensation of 2-formylpyrrole with the corresponding diamines. Self-assembly of the resulting bis(pyrrol-2-yl-methyleneamine) ligands with Zn(II) gave double-stranded helicates in excellent yields. Their structures were characterized by MS, 1H NMR, 13C NMR, UV–Vis spectroscopic studies, and were confirmed by an X-ray crystal analysis. In CH 2Cl 2, both complexes 4 and 5 displayed moderate fluorescence.
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