کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1405159 1501709 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One pot synthesis, structure and magnetic property of a pseudo-interpenetrated 2D copper framework based on coordinated 1,1′-biphenyl-3,3′,5,5′-tetracarboxylate and synthon
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
One pot synthesis, structure and magnetic property of a pseudo-interpenetrated 2D copper framework based on coordinated 1,1′-biphenyl-3,3′,5,5′-tetracarboxylate and synthon
چکیده انگلیسی


• The compound (I) was synthesized under simple hydrothermal conditions.
• The pseudo-interpenetrated framework is formed by interlocked metal-organic moiety and neutral H4bpta ligand segment.
• The compound (I) exhibits an interesting interweaving framework with a new (3,4,5)-connected topological structure.

A mixture of 1,1′-biphenyl-3,3′,5,5′-tetracarboxylate acid (abbreviated as H4bpta), 4,4′-bipyridine (abbreviated as 4,4′-bipy), and CuCl2·2H2O generates co-crystallization supramolecular solids [Cu2(cis-H2bpta)2(4,4′-bipy)2]n·nH4bpta·2nH2O (I) under hydrothermal condition and form of partly deprotonated cis-H2bpta2− firstly emerges in this work. Crystallographically, a 1:1 co-crystal is formed by co-crystallization of [Cu2(cis-H2bpta)2(4,4′-bipy)2] and H4bpta in self-assembled process. Structurally, the compound (I) exhibits two-dimensional (2D) double-layered nets with a pseudo-interpenetrated skeleton, one layer is characteristic of metal-organic moiety linked via cis-H2bpta2− and 4,4′-bipy spaces, and the other formed by O–H···O H-bonds presented in neutral H4bpta ligands. Interestingly, its mechanically interlocked structure is formed by hydrogen bonds, which results in an interesting interweaving framework with a new (3,4,5)-connected topological structure. Magnetic couplings between adjacent Cu(II) centers are mediated through double syn-syn carboxylate bridges. Magnetic susceptibility measurement indicates that (I) exhibits a dinuclear Cu(II) behavior with antiferromagnetic coupling (J = −35.69(1) cm−1).

A 1:1 cocrystal is formed by cocrystallization of [Cu2(cis-H2bpta)2(4,4′-bipy)2] and H4bpta in self-assembled process, which exhibits 2D interweaving layered nets via hydrogen bonds based on the two types hetero-molecules.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 1108, 15 March 2016, Pages 451–457
نویسندگان
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