کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1312839 975502 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Syntheses, crystal structures, and bond valence sum analyses of lanthanide complexes with a planar pentadentate ligand
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Syntheses, crystal structures, and bond valence sum analyses of lanthanide complexes with a planar pentadentate ligand
چکیده انگلیسی

The syntheses and X-ray crystal structures of the Eu, Gd, Dy, Ho, and Er nitrate complexes of the pentadentate ligand 2,6-diacetylpyridine bis acetic acid hydrazone, or H2dapaah, are reported. The complexes can be divided into 3 groups depending on the number of water molecules per metal ion. The Ln · 4H2O complexes with Eu, Gd and Dy are isomorphous, with the Ln ion being 10 coordinate. The Ln · 6H2O group includes Ho and Er, where the cation is 9 coordinate. The final complex Gd · 5H2O is 10 coordinate like the Eu, Gd and Dy complexes, but the additional water molecule has stabilized an ordered crystal. The bond valence sum method has been used to analyze the bonding in the complexes and has suggested that bond valence equalization in three dimensions may be an important concept.

Water soluble lanthanide complexes with a planar pentadentate ligand illustrate three-dimensional bond valence sum equalization.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 359, Issue 14, 1 November 2006, Pages 4645–4650
نویسندگان
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