کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1261914 971837 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, crystal structure and fluorescence property of 1-D europium complex with 2,3-difluorobenzoate
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis, crystal structure and fluorescence property of 1-D europium complex with 2,3-difluorobenzoate
چکیده انگلیسی

A new chain europium complex [Eu(2,3-DFBA)3·(H2O)2]n (2,3-DFBA=2,3-difluorobenzoate) was synthesized by solvent method. X-ray single-crystal diffraction analysis revealed that Eu3+ ions were linked through 2,3-DFBA groups via alternate bidentate-bridging and tridentate chelating-bridging coordination modes to form a one-dimensional (1-D) polymeric chain. Each Eu3+ ion is eight-coordinated by six O atoms of five 2,3-DFBA ligands and two water molecules. The abundant hydrogen bonds between chains resulted in a two-dimensional (2-D) network structure. The titled complex crystallizes in monoclinic system, space group P21/c, with a=0.79977(2) nm, b=2.99156(7) nm, c=0.93260(2) nm, and β=100.691(1)°. The complex exhibited strong red fluorescence under ultraviolet light, and the 5D0 → 7Fj (j=0∼4) transitions of Eu3+ ion were observed in its emission spectrum.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 27, Issue 6, December 2009, Pages 1092–1095
نویسندگان
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