Syntheses, structures and properties of chiral dinuclear zinc complexes with Schiff-base ligands

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• 作者：He-Rui Wen^a ; ^{wenherui63@163.com} ; Ying Wang^a ; Jing-Lin Chen^a ; Yun-Zhi Tang^a ; Jin-Sheng Liao^a ; Cai-Ming Liu^b
• 关键词：Zinc complexes ; Chiral Schiff-base ; Crystal structure ; Circular dichroism spectrum ; Luminescence properties
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 出版时间：June, 2012
• 年：2012
• 卷：20
• 期：Complete
• 页码：303-306
• 全文大小：770 K

文摘

Two couples of enantiomerically chiral dinuclear zinc complexes with Schiff-base ligands, [Zn₂(R-L₁)₃](ClO₄)¡¤H₂O (class=""boldFont"">1) and [Zn₂(S-L₁)₃](ClO₄)¡¤H₂O (class=""boldFont"">2), [Zn₂(R-L₂)₃](ClO₄) (class=""boldFont"">3) and [Zn₂(S-L₂)₃](ClO₄) (class=""boldFont"">4) (R-L₁ or S-L₁ = R- or S-3-methoxy-6-(((methyl-2-pyridinylmethyl) imino)methyl)-Phenol, R-L₂ or S-L₂ = R- or S-1-((1-(pyridin-2-yl)ethylimino)methyl) naphthalen-2-ol), were synthesized and characterized. The strong solid-state fluorescence emissions were observed at around 490 nm for class=""boldFont"">1 and class=""boldFont"">2 and 580 nm for class=""boldFont"">3 and class=""boldFont"">4 at room temperature, respectively, which are attributed to the intraligand charge-transfer excite state. The fluorescence emissions of class=""boldFont"">3 and class=""boldFont"">4 exhibit obvious red-shift relative to class=""boldFont"">1 and class=""boldFont"">2.