کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1313097 975527 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, crystal structure and fluorescent characterization of a novel lanthanide tetraphosphonate with a layered structure
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis, crystal structure and fluorescent characterization of a novel lanthanide tetraphosphonate with a layered structure
چکیده انگلیسی

Hydrothermal reactions of Gd(III) nitrate with N,N,N′,N′-tetramethylenephosphono-1,4-diaminobutane, (H2O3PCH2)2N–(CH2)4–N(CH2PO3H2)2 (H8L), afforded a novel Gd(III) phosphonate, namely, Gd[(O3PCH2)(HO3PCH2)N(H)(CH2)4N(H)(CH2PO3H)2] · 2H2O, [Gd(H5L)] · 2H2O. Its structure was established by a single-crystal X-ray diffraction study. In this compound, the Gd(III) ion is coordinated by eight phoshonate oxygen atoms from five different phosphonate groups, which belong to five different phosphonic ligands. Each Gd atom is connected with its neighboring Gd atoms by two phosphonate oxygens, forming a gadolinium phosphonate slab along the a-axis. Such slabs are bridged by tetraphosphonate H5L anions, resulting in a 〈0 1 1〉 layer with the butane groups toward the interlayer space. These layers are further interlinked by strong hydrogen bonds formed by uncoordinated phosphonate oxygens into a 3D supermolecular structure. Luminescent studies indicate that this compound exhibits a broad blue fluorescent emission band at 441 nm.

Hydrothermal reactions of Gd(III) nitrate with N,N,N′,N′-tetramethylenephosphono-1,4-diaminobutane afforded a novel Gd(III) phosphonate, namely, Gd[(O3PCH2)(HO3PCH2)N(H)(CH2)4N(H)(CH2PO3H)2] · 2H2O. In this compound, the interconnection of Gd(III) ions through bridging tetraphosphonate H5L anions lead to the formation of the 〈0 1 1〉 Gd(III) diphosphonate 2D layer. These layers are further interlinked by strong hydrogen bonds formed by non coordinated phosphonate oxygens into a 3D supermolecular structure. Luminescent studies indicate that this compound exhibits a broad blue fluorescent emission band at 441 nm.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 359, Issue 5, 20 March 2006, Pages 1589–1593
نویسندگان
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