Self-assembly of bis(pyrrol-2-yl-methyleneamine)s bridged by flexible linear carbon chains期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Self-assembly of bis(pyrrol-2-yl-methyleneamine)s bridged by flexible linear carbon chains

Authors:	Lan-Ying YangQing-Qi Chen Guo-Qiang YangJin-Shi Ma

Institution:	^a CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China ^b Biomarin Pharmaceutical Inc., 46 Galli Drive, Novato, CA 94949, USA

Abstract:	Two linear bis(pyrrol-2-yl-methyleneamine)s linked by a carbon chain, -(CH₂)_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 CH₂Cl₂, both complexes 4 and 5 displayed moderate fluorescence.

Keywords:	crystal structure pyrrole self-assembly pyrrol-2-yl-methyleneamine Schiff base double stranded helix Zn(II)-complex
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