کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1302125 1498959 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of lanthanide contraction on structures of 3D lanthanide organic frameworks from 5-nitroisophthalic acid and picolinic acid
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Effect of lanthanide contraction on structures of 3D lanthanide organic frameworks from 5-nitroisophthalic acid and picolinic acid
چکیده انگلیسی

Two different types of novel lanthanide coordination polymers constructed from 5-nitroisophthalic acid, and picolinic acid as auxiliary ligand, namely, {[Ln2(nip)2(pic)2(H2O)]}n (type I, Ln = Pr 1, Nd 2, Sm 3, Eu 4, and H2nip = 5-nitroisophthalic acid, Hpic = picolinic acid), and {[Ln4(nip)5(pic)2(H2O)2]·2H2O}n (type II, Ln = Tb 5, Dy 6, Ho 7, Er 8), have been hydrothermally synthesized and characterized by IR, elemental analysis, thermogravimetric analysis (TGA), single-crystal X-ray diffraction analyses and powder X-ray diffraction (PXRD). Complexes 1–4 (type I) are isostructural and the infinite 1D Sm-carboxylate chains are bridged by pia ligands to form 2D sheets, such sheets are further united together to generate a 3D supramolecular structure. Complexes 5–8 (type II) are isostructural and the infinite 1D Tb–carboxylate chains are bridged by pia ligands to form 2D sheets, such sheets are further united together to generate a 3D supramolecular structure. Furthermore, the luminescence properties of compounds 4 and 5 have also been studied.

The coordination modes of H2nip and Hpic ligands.Figure optionsDownload as PowerPoint slideHighlights
► Two different types of novel lanthanide coordination polymers have been synthesized.
► Lanthanide contraction affects the structure of eight complexes.
► Complexes 4 and 5 exhibit characteristic lanthanide-centered luminescence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganic Chemistry Communications - Volume 31, May 2013, Pages 5–12
نویسندگان
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